conversion module¶
Module for converting Google Earth Engine (GEE) JavaScripts to Python scripts and Jupyter notebooks. - To convert a GEE JavaScript to Python script: js_to_python(in_file out_file) - To convert all GEE JavaScripts in a folder recursively to Python scripts: js_to_python_dir(in_dir, out_dir) - To convert a GEE Python script to Jupyter notebook: py_to_ipynb(in_file, template_file, out_file) - To convert all GEE Python scripts in a folder recursively to Jupyter notebooks: py_to_ipynb_dir(in_dir, template_file, out_dir) - To execute a Jupyter notebook and save output cells: execute_notebook(in_file) - To execute all Jupyter notebooks in a folder recursively: execute_notebook_dir(in_dir)
check_map_functions(input_lines)
¶
Extracts Earth Engine map function
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
input_lines |
list |
List of Earth Engine JavaScrips |
required |
Returns:
| Type | Description |
|---|---|
list |
Output JavaScript with map function |
Source code in geemap/conversion.py
def check_map_functions(input_lines):
"""Extracts Earth Engine map function
Args:
input_lines (list): List of Earth Engine JavaScrips
Returns:
list: Output JavaScript with map function
"""
output_lines = []
currentNumOfNestedFuncs = 0
for index, line in enumerate(input_lines):
if (
line.strip().endswith(".map(")
and input_lines[index + 1].strip().replace(" ", "").startswith("function(")
) or (
line.strip().endswith(".map(function(")
and input_lines[index + 1].strip().replace(" ", "").endswith("{")
):
input_lines[index + 1] = line + input_lines[index + 1]
continue
if (
".map(function" in line.replace(" ", "")
or "returnfunction" in line.replace(" ", "")
or "function(" in line.replace(" ", "")
):
try:
bracket_index = line.index("{")
matching_line_index, matching_char_index = find_matching_bracket(
input_lines, index, bracket_index
)
func_start_index = line.index("function")
func_name = "func_" + random_string()
func_header = line[func_start_index:].replace(
"function", "function " + func_name
)
output_lines.append("\n")
output_lines.append(func_header)
currentNumOfNestedFuncs += 1
new_lines = input_lines[index + 1 : matching_line_index]
new_lines = check_map_functions(new_lines)
for sub_index, tmp_line in enumerate(new_lines):
output_lines.append((" " * currentNumOfNestedFuncs) + tmp_line)
if "{" in tmp_line:
currentNumOfNestedFuncs += 1
if "}" in tmp_line:
currentNumOfNestedFuncs -= 1
input_lines[index + 1 + sub_index] = ""
currentNumOfNestedFuncs -= 1
header_line = line[:func_start_index] + func_name
header_line = header_line.rstrip()
func_footer = input_lines[matching_line_index][
: matching_char_index + 1
]
output_lines.append(func_footer)
footer_line = input_lines[matching_line_index][
matching_char_index + 1 :
].strip()
if footer_line == ")" or footer_line == ");":
header_line = header_line + footer_line
footer_line = ""
input_lines[matching_line_index] = footer_line
output_lines.append(header_line)
# output_lines.append(footer_line)
except Exception as e:
print(
f"An error occurred: {e}. The closing curly bracket could not be found in Line {index+1}: {line}. Please reformat the function definition and make sure that both the opening and closing curly brackets appear on the same line as the function keyword. "
)
else:
output_lines.append(line)
return output_lines
convert_for_loop(line)
¶
Converts JavaScript for loop to Python for loop.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
line |
str |
Input JavaScript for loop |
required |
Returns:
| Type | Description |
|---|---|
str |
Converted Python for loop. |
Source code in geemap/conversion.py
def convert_for_loop(line):
"""Converts JavaScript for loop to Python for loop.
Args:
line (str): Input JavaScript for loop
Returns:
str: Converted Python for loop.
"""
new_line = ""
if "var " in line:
line = line.replace("var ", "")
start_index = line.index("(")
end_index = line.index(")")
prefix = line[:(start_index)]
suffix = line[(end_index + 1) :]
params = line[(start_index + 1) : end_index]
if " in " in params and params.count(";") == 0:
new_line = prefix + "{}:".format(params) + suffix
return new_line
items = params.split("=")
param_name = items[0].strip()
items = params.split(";")
subitems = []
for item in items:
subitems.append(item.split(" ")[-1])
start = subitems[0]
end = subitems[1]
step = subitems[2]
if "++" in step:
step = 1
elif "--" in step:
step = -1
prefix = line[:(start_index)]
suffix = line[(end_index + 1) :]
new_line = (
prefix
+ "{} in range({}, {}, {}):".format(param_name, start, end, step)
+ suffix
)
return new_line
create_new_cell(contents, replace=False)
¶
Create a new cell in Jupyter notebook based on the contents.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
contents |
str |
A string of Python code. |
required |
Source code in geemap/conversion.py
def create_new_cell(contents, replace=False):
"""Create a new cell in Jupyter notebook based on the contents.
Args:
contents (str): A string of Python code.
"""
from IPython.core.getipython import get_ipython
shell = get_ipython()
shell.set_next_input(contents, replace=replace)
download_gee_app(url, out_file=None)
¶
Downloads JavaScript source code from a GEE App
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
The URL of the GEE App. |
required |
out_file |
str |
The output file path for the downloaded JavaScript. Defaults to None. |
None |
Source code in geemap/conversion.py
def download_gee_app(url, out_file=None):
"""Downloads JavaScript source code from a GEE App
Args:
url (str): The URL of the GEE App.
out_file (str, optional): The output file path for the downloaded JavaScript. Defaults to None.
"""
cwd = os.getcwd()
out_file_name = os.path.basename(url) + ".js"
out_file_path = os.path.join(cwd, out_file_name)
items = url.split("/")
items[3] = "javascript"
items[4] = items[4] + "-modules.json"
json_url = "/".join(items)
print(f"The json url: {json_url}")
if out_file is not None:
out_file_path = out_file
if not out_file_path.endswith("js"):
out_file_path += ".js"
out_dir = os.path.dirname(out_file_path)
if not os.path.exists(out_dir):
os.makedirs(out_dir)
json_path = out_file_path + "on"
try:
urllib.request.urlretrieve(json_url, json_path)
except Exception:
raise Exception("The URL is invalid. Please double check the URL.")
with open(out_file_path, "w") as f1:
with open(json_path, encoding="utf-8") as f2:
lines = f2.readlines()
for line in lines:
# print(line)
items = line.split("\\n")
for index, item in enumerate(items):
if (index > 0) and (index < (len(items) - 1)):
item = item.replace('\\"', '"')
item = item.replace(r"\\", "\n")
item = item.replace("\\r", "")
f1.write(item + "\n")
os.remove(json_path)
print(f"The JavaScript is saved at: {out_file_path}")
execute_notebook(in_file)
¶
Executes a Jupyter notebook and save output cells
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_file |
str |
Input Jupyter notebook. |
required |
Source code in geemap/conversion.py
def execute_notebook(in_file):
"""Executes a Jupyter notebook and save output cells
Args:
in_file (str): Input Jupyter notebook.
"""
# command = 'jupyter nbconvert --to notebook --execute ' + in_file + ' --inplace'
command = 'jupyter nbconvert --to notebook --execute "{}" --inplace'.format(in_file)
print(os.popen(command).read().rstrip())
# os.popen(command)
execute_notebook_dir(in_dir)
¶
Executes all Jupyter notebooks in the given directory recursively and save output cells.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_dir |
str |
Input folder containing notebooks. |
required |
Source code in geemap/conversion.py
def execute_notebook_dir(in_dir):
"""Executes all Jupyter notebooks in the given directory recursively and save output cells.
Args:
in_dir (str): Input folder containing notebooks.
"""
print("Executing Earth Engine Jupyter notebooks ...\n")
in_dir = os.path.abspath(in_dir)
files = list(Path(in_dir).rglob("*.ipynb"))
count = len(files)
if files is not None:
for index, file in enumerate(files):
in_file = str(file)
print(f"Processing {index + 1}/{count}: {file} ...")
execute_notebook(in_file)
find_matching_bracket(lines, start_line_index, start_char_index, matching_char='{')
¶
Finds the position of the matching closing bracket from a list of lines.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
lines |
list |
The input list of lines. |
required |
start_line_index |
int |
The line index where the starting bracket is located. |
required |
start_char_index |
int |
The position index of the starting bracket. |
required |
matching_char |
str |
The starting bracket to search for. Defaults to '{'. |
'{' |
Returns:
| Type | Description |
|---|---|
matching_line_index (int) |
The line index where the matching closing bracket is located. matching_char_index (int): The position index of the matching closing bracket. |
Source code in geemap/conversion.py
def find_matching_bracket(lines, start_line_index, start_char_index, matching_char="{"):
"""Finds the position of the matching closing bracket from a list of lines.
Args:
lines (list): The input list of lines.
start_line_index (int): The line index where the starting bracket is located.
start_char_index (int): The position index of the starting bracket.
matching_char (str, optional): The starting bracket to search for. Defaults to '{'.
Returns:
matching_line_index (int): The line index where the matching closing bracket is located.
matching_char_index (int): The position index of the matching closing bracket.
"""
matching_line_index = -1
matching_char_index = -1
matching_chars = {"{": "}", "(": ")", "[": "]"}
if matching_char not in matching_chars.keys():
print(
"The matching character must be one of the following: {}".format(
", ".join(matching_chars.keys())
)
)
return matching_line_index, matching_char_index
# Create a deque to use it as a stack.
d = deque()
for line_index in range(start_line_index, len(lines)):
line = lines[line_index]
# deal with the line where the starting bracket is located.
if line_index == start_line_index:
line = lines[line_index][start_char_index:]
for index, item in enumerate(line):
# Pops a starting bracket for each closing bracket
if item == matching_chars[matching_char]:
d.popleft()
# Push all starting brackets
elif item == matching_char:
d.append(matching_char)
# If deque becomes empty
if not d:
matching_line_index = line_index
if line_index == start_line_index:
matching_char_index = start_char_index + index
else:
matching_char_index = index
return matching_line_index, matching_char_index
return matching_line_index, matching_char_index
format_params(line, sep=':')
¶
Formats keys in a dictionary and adds quotes to the keys. For example, {min: 0, max: 10} will result in ('min': 0, 'max': 10)
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
line |
str |
A string. |
required |
sep |
str |
Separator. Defaults to ':'. |
':' |
Returns:
| Type | Description |
|---|---|
[str] |
A string with keys quoted |
Source code in geemap/conversion.py
def format_params(line, sep=":"):
"""Formats keys in a dictionary and adds quotes to the keys.
For example, {min: 0, max: 10} will result in ('min': 0, 'max': 10)
Args:
line (str): A string.
sep (str, optional): Separator. Defaults to ':'.
Returns:
[str]: A string with keys quoted
"""
# print(line)
new_line = line
prefix = ""
# suffix = ""
if line.strip().startswith("for"): # skip for loop
return line
# find all occurrences of a substring
def find_all(a_str, sub):
start = 0
while True:
start = a_str.find(sub, start)
if start == -1:
return
yield start
start += len(sub) # use start += 1 to find overlapping matches
indices = list(find_all(line, sep))
count = len(indices)
if "{" in line:
bracket_index = line.index("{")
if bracket_index < indices[0]:
prefix = line[: bracket_index + 1]
line = line[bracket_index + 1 :]
if count > 0:
items = line.split(sep)
if count == 1:
for i in range(0, count):
item = items[i].strip()
if ('"' not in item) and ("'" not in item):
new_item = "'" + item + "'"
items[i] = items[i].replace(item, new_item)
new_line = ":".join(items)
elif count > 1:
for i in range(0, count):
item = items[i]
if "," in item:
subitems = item.split(",")
subitem = subitems[-1]
if ('"' not in subitem) and ("'" not in subitem):
new_subitem = "'" + subitem.strip() + "'"
subitems[-1] = subitems[-1].replace(subitem, new_subitem)
items[i] = ", ".join(subitems)
else:
if ('"' not in item) and ("'" not in item):
new_item = "'" + item.strip() + "'"
padding = len(item) - len(item.strip())
items[i] = " " * padding + item.replace(item, new_item)
new_line = ":".join(items)
return prefix + new_line
get_js_examples(out_dir=None)
¶
Gets Earth Engine JavaScript examples from the geemap package.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
out_dir |
str |
The folder to copy the JavaScript examples to. Defaults to None. |
None |
Returns:
| Type | Description |
|---|---|
str |
The folder containing the JavaScript examples. |
Source code in geemap/conversion.py
def get_js_examples(out_dir=None):
"""Gets Earth Engine JavaScript examples from the geemap package.
Args:
out_dir (str, optional): The folder to copy the JavaScript examples to. Defaults to None.
Returns:
str: The folder containing the JavaScript examples.
"""
pkg_dir = os.path.dirname(pkg_resources.resource_filename("geemap", "geemap.py"))
example_dir = os.path.join(pkg_dir, "data")
js_dir = os.path.join(example_dir, "javascripts")
files = list(Path(js_dir).rglob("*.js"))
if out_dir is None:
out_dir = js_dir
else:
if not os.path.exists(out_dir):
os.makedirs(out_dir)
for file in files:
basename = os.path.basename(file)
out_path = os.path.join(out_dir, basename)
shutil.copyfile(file, out_path)
return out_dir
get_nb_template(download_latest=False, out_file=None)
¶
Get the Earth Engine Jupyter notebook template.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
download_latest |
bool |
If True, downloads the latest notebook template from GitHub. Defaults to False. |
False |
out_file |
str |
Set the output file path of the notebook template. Defaults to None. |
None |
Returns:
| Type | Description |
|---|---|
str |
The file path of the template. |
Source code in geemap/conversion.py
def get_nb_template(download_latest=False, out_file=None):
"""Get the Earth Engine Jupyter notebook template.
Args:
download_latest (bool, optional): If True, downloads the latest notebook template from GitHub. Defaults to False.
out_file (str, optional): Set the output file path of the notebook template. Defaults to None.
Returns:
str: The file path of the template.
"""
pkg_dir = os.path.dirname(pkg_resources.resource_filename("geemap", "geemap.py"))
example_dir = os.path.join(pkg_dir, "data")
template_dir = os.path.join(example_dir, "template")
template_file = os.path.join(template_dir, "template.py")
if out_file is None:
out_file = template_file
return out_file
if not out_file.endswith(".py"):
out_file = out_file + ".py"
if not os.path.exists(os.path.dirname(out_file)):
os.makedirs(os.path.dirname(out_file))
if download_latest:
template_url = "https://raw.githubusercontent.com/gee-community/geemap/master/examples/template/template.py"
print(f"Downloading the latest notebook template from {template_url}")
urllib.request.urlretrieve(template_url, out_file)
elif out_file is not None:
shutil.copyfile(template_file, out_file)
return out_file
js_snippet_to_py(in_js_snippet, add_new_cell=True, import_ee=True, import_geemap=False, show_map=True, Map='m')
¶
Converts an Earth Engine JavaScript snippet wrapped in triple quotes to Python directly on a Jupyter notebook.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_js_snippet |
str |
Earth Engine JavaScript within triple quotes. |
required |
add_new_cell |
bool |
Whether add the converted Python to a new cell. |
True |
import_ee |
bool |
Whether to import ee. Defaults to True. |
True |
import_geemap |
bool |
Whether to import geemap. Defaults to False. |
False |
show_map |
bool |
Whether to show the map. Defaults to True. |
True |
Map |
str |
The name of the map variable. Defaults to "m". |
'm' |
Returns:
| Type | Description |
|---|---|
list |
A list of Python script. |
Source code in geemap/conversion.py
def js_snippet_to_py(
in_js_snippet,
add_new_cell=True,
import_ee=True,
import_geemap=False,
show_map=True,
Map="m",
):
"""Converts an Earth Engine JavaScript snippet wrapped in triple quotes to Python directly on a Jupyter notebook.
Args:
in_js_snippet (str): Earth Engine JavaScript within triple quotes.
add_new_cell (bool, optional): Whether add the converted Python to a new cell.
import_ee (bool, optional): Whether to import ee. Defaults to True.
import_geemap (bool, optional): Whether to import geemap. Defaults to False.
show_map (bool, optional): Whether to show the map. Defaults to True.
Map (str, optional): The name of the map variable. Defaults to "m".
Returns:
list: A list of Python script.
"""
in_js = temp_file_path(".js")
out_py = temp_file_path(".py")
in_js_snippet = re.sub(
r"([a-zA-Z0-9_]+)\s*:", r'"\1":', in_js_snippet
) # Add quotes around keys
try:
with open(in_js, "w") as f:
f.write(in_js_snippet)
js_to_python(
in_js,
out_file=out_py,
use_qgis=False,
show_map=show_map,
import_geemap=import_geemap,
Map=Map,
)
out_lines = []
if import_ee:
out_lines.append("import ee\n")
# if import_geemap:
# out_lines.append("import geemap\n\n")
# out_lines.append(f"{Map} = geemap.Map()\n")
with open(out_py, encoding="utf-8") as f:
lines = f.readlines()
for index, line in enumerate(lines):
if index < (len(lines) - 1):
if line.strip() == "import ee":
continue
next_line = lines[index + 1]
if line.strip() == "" and next_line.strip() == "":
continue
elif ".style(" in line and (".style(**" not in line):
line = line.replace(".style(", ".style(**")
out_lines.append(line)
elif "({" in line:
line = line.replace("({", "(**{")
out_lines.append(line)
else:
out_lines.append(line)
elif index == (len(lines) - 1) and lines[index].strip() != "":
out_lines.append(line)
os.remove(in_js)
os.remove(out_py)
if add_new_cell:
contents = "".join(out_lines).strip()
create_new_cell(contents)
else:
return out_lines
except Exception as e:
print(e)
js_to_python(in_file, out_file=None, use_qgis=True, github_repo=None, show_map=True, import_geemap=False, Map='m')
¶
Converts an Earth Engine JavaScript to Python script.
1 2 3 4 | |
" to the output script. Defaults to True. github_repo (str, optional): GitHub repo url. Defaults to None. show_map (bool, optional): Whether to add "Map" to the output script. Defaults to True. import_geemap (bool, optional): Whether to add "import geemap" to the output script. Defaults to False. Map (str, optional): The name of the map variable. Defaults to "m".
1 2 | |
Source code in geemap/conversion.py
def js_to_python(
in_file,
out_file=None,
use_qgis=True,
github_repo=None,
show_map=True,
import_geemap=False,
Map="m",
):
"""Converts an Earth Engine JavaScript to Python script.
Args:
in_file (str): File path of the input JavaScript.
out_file (str, optional): File path of the output Python script. Defaults to None.
use_qgis (bool, optional): Whether to add "from ee_plugin import Map \n" to the output script. Defaults to True.
github_repo (str, optional): GitHub repo url. Defaults to None.
show_map (bool, optional): Whether to add "Map" to the output script. Defaults to True.
import_geemap (bool, optional): Whether to add "import geemap" to the output script. Defaults to False.
Map (str, optional): The name of the map variable. Defaults to "m".
Returns:
list: Python script
"""
in_file = os.path.abspath(in_file)
if out_file is None:
out_file = in_file.replace(".js", ".py")
root_dir = os.path.dirname(os.path.abspath(__file__))
if not os.path.isfile(in_file):
in_file = os.path.join(root_dir, in_file)
if not os.path.isfile(out_file):
out_file = os.path.join(root_dir, out_file)
is_python = False
# add_github_url = False
if use_qgis and import_geemap:
raise Exception(
"use_qgis and import_geemap cannot be both True. Please set one of them to False."
)
import_str = ""
if use_qgis:
import_str = "from ee_plugin import Map\n"
if import_geemap:
import_str = f"import geemap\n\n{Map} = geemap.Map()\n"
github_url = ""
if github_repo is not None:
github_url = "# GitHub URL: " + github_repo + in_file + "\n\n"
math_import = False
math_import_str = ""
lines = []
with open(in_file, encoding="utf-8") as f:
lines = f.readlines()
math_import = use_math(lines)
for line in lines:
line = line.strip()
if line == "import ee":
is_python = True
if math_import:
math_import_str = "import math\n"
output = ""
if is_python: # only update the GitHub URL if it is already a GEE Python script
output = github_url + "".join(map(str, lines))
else: # deal with JavaScript
header = github_url + "import ee \n" + math_import_str + import_str
# function_defs = []
output = header + "\n"
with open(in_file, encoding="utf-8") as f:
lines = f.readlines()
numIncorrectParameters = 0
checkNextLineForPrint = False
shouldCheckForEmptyLines = False
currentDictionaryScopeDepth = 0
currentNumOfNestedFuncs = 0
# We need to remove all spaces from the beginning of each line to accurately format the indentation
lines = remove_all_indentation(lines)
# print('Processing {}'.format(in_file))
lines = check_map_functions(lines)
for index, line in enumerate(lines):
if "Map.setOptions" in line:
# Regular expression to remove everything after the comma and before ');'
line = re.sub(r",[^)]+(?=\);)", "", line)
if ("/* color" in line) and ("*/" in line):
line = (
line[: line.index("/*")].lstrip()
+ line[(line.index("*/") + 2) :]
)
if (
("= function" in line)
or ("=function" in line)
or line.strip().startswith("function")
):
try:
bracket_index = line.index("{")
(
matching_line_index,
matching_char_index,
) = find_matching_bracket(lines, index, bracket_index)
if "func_" not in line:
currentNumOfNestedFuncs += 1
for sub_index, tmp_line in enumerate(
lines[index + 1 : matching_line_index]
):
# lines[sub_index] = (' ' * currentNumOfNestedFuncs) + tmp_line
if "{" in tmp_line and "function" not in line:
currentNumOfNestedFuncs += 1
if "}" in tmp_line and "function" not in line:
currentNumOfNestedFuncs -= 1
lines[index + 1 + sub_index] = (
" " * currentNumOfNestedFuncs
) + lines[index + 1 + sub_index]
currentNumOfNestedFuncs -= 1
line = line[:bracket_index] + line[bracket_index + 1 :]
if matching_line_index == index:
line = (
line[:matching_char_index]
+ line[matching_char_index + 1 :]
)
else:
tmp_line = lines[matching_line_index]
lines[matching_line_index] = (
tmp_line[:matching_char_index]
+ tmp_line[matching_char_index + 1 :]
)
except Exception as e:
print(
f"An error occurred when processing {in_file}. The closing curly bracket could not be found in Line {index+1}: {line}. Please reformat the function definition and make sure that both the opening and closing curly brackets appear on the same line as the function keyword. "
)
return
line = (
line.replace(" = function", "")
.replace("=function", "")
.replace("function ", "")
)
if line.lstrip().startswith("//"):
line = line.replace("//", "").lstrip()
line = (
" " * (len(line) - len(line.lstrip()))
+ "# def "
+ line.strip()
+ ":"
)
else:
line = (
" " * (len(line) - len(line.lstrip()))
+ "def "
+ line.strip()
+ ":"
)
elif "{" in line and "({" not in line:
bracket_index = line.index("{")
(
matching_line_index,
matching_char_index,
) = find_matching_bracket(lines, index, bracket_index)
currentNumOfNestedFuncs += 1
for sub_index, tmp_line in enumerate(
lines[index + 1 : matching_line_index]
):
lines[index + 1 + sub_index] = (
" " * currentNumOfNestedFuncs
) + lines[index + 1 + sub_index]
if "{" in tmp_line and "if" not in line and "for" not in line:
currentNumOfNestedFuncs += 1
if "}" in tmp_line and "if" not in line and "for" not in line:
currentNumOfNestedFuncs -= 1
currentNumOfNestedFuncs -= 1
if (matching_line_index == index) and (":" in line):
pass
elif (
("for (" in line)
or ("for(" in line)
or ("if (" in line)
or ("if(" in line)
):
if "if" not in line:
line = convert_for_loop(line)
else:
start_index = line.index("(")
end_index = line.index(")")
line = "if " + line[start_index:end_index] + "):{"
lines[index] = line
bracket_index = line.index("{")
(
matching_line_index,
matching_char_index,
) = find_matching_bracket(lines, index, bracket_index)
tmp_line = lines[matching_line_index]
lines[matching_line_index] = (
tmp_line[:matching_char_index]
+ tmp_line[matching_char_index + 1 :]
)
line = line.replace("{", "")
if line is None:
line = ""
line = line.replace("//", "#")
line = line.replace("var ", "", 1)
line = line.replace("/*", "#")
line = line.replace("*/", "#")
line = line.replace("true", "True").replace("false", "False")
line = line.replace("null", "None")
line = line.replace(".or", ".Or")
line = line.replace(".and", ".And")
line = line.replace(".not", ".Not")
line = line.replace("visualize({", "visualize(**{")
line = line.replace("Math.PI", "math.pi")
line = line.replace("Math.", "math.")
line = line.replace("parseInt", "int")
line = line.replace("NotNull", "notNull")
line = line.replace("= new", "=")
line = line.replace("exports.", "")
line = line.replace("Map.", f"{Map}.")
line = line.replace(
"Export.table.toDrive", "geemap.ee_export_vector_to_drive"
)
line = line.replace(
"Export.table.toAsset", "geemap.ee_export_vector_to_asset"
)
line = line.replace(
"Export.image.toAsset", "geemap.ee_export_image_to_asset"
)
line = line.replace(
"Export.video.toDrive", "geemap.ee_export_video_to_drive"
)
line = line.replace("||", "or")
line = line.replace(r"\****", "#")
line = line.replace("def =", "_def =")
line = line.replace(", def, ", ", _def, ")
line = line.replace("(def, ", "(_def, ")
line = line.replace(", def)", ", _def)")
line = line.replace("===", "==")
# Replaces all javascript operators with python operators
if "!" in line:
try:
if (line.replace(" ", ""))[line.find("!") + 1] != "=":
line = line.replace("!", "not ")
except:
print("continue...")
line = line.rstrip()
# If the function concat is used, replace it with python's concatenation
if "concat" in line:
line = line.replace(".concat(", "+")
line = line.replace(",", "+")
line = line.replace(")", "")
# Checks if an equal sign is at the end of a line. If so, add backslashes
if shouldCheckForEmptyLines:
if line.strip() == "" or "#" in line:
if line.strip().endswith("["):
line = "["
shouldCheckForEmptyLines = False
else:
line = "\\"
else:
shouldCheckForEmptyLines = False
if line.strip().endswith("="):
line = line + " \\"
shouldCheckForEmptyLines = True
# Adds getInfo at the end of print statements involving maps
endOfPrintReplaced = False
if ("print(" in line and "=" not in line) or checkNextLineForPrint:
for i in range(len(line) - 1):
if line[len(line) - i - 1] == ")":
line = line[: len(line) - i - 1] + ".getInfo())"
# print(line)
endOfPrintReplaced = True
break
if endOfPrintReplaced:
checkNextLineForPrint = False
else:
checkNextLineForPrint = True
# Removes potential commas after imports. Causes tuple type errors
if line.endswith(","):
if "=" in lines[index + 1] and not lines[
index + 1
].strip().startswith("'"):
line = line[:-1]
# Changes object argument to individual parameters
if (
line.strip().endswith("({")
and not "ee.Dictionary" in line
and not ".set(" in line
and ".addLayer" not in line
and "cast" not in line
):
line = line.rstrip()[:-1]
numIncorrectParameters = numIncorrectParameters + 1
if numIncorrectParameters > 0:
if line.strip().startswith("})"):
line = line.replace("})", ")")
numIncorrectParameters = numIncorrectParameters - 1
else:
if currentDictionaryScopeDepth < 1:
line = line.replace(": ", "=")
line = line.replace(":", " =")
if "= {" in line and "({" not in line:
currentDictionaryScopeDepth += 1
if "}" in line and currentDictionaryScopeDepth > 0:
currentDictionaryScopeDepth -= 1
# if ".style(" in line and ".style(**" not in line:
# line = line.replace(".style(", ".style(**")
if line.endswith("+"):
line = line + " \\"
elif line.endswith(";"):
line = line[:-1]
if line.lstrip().startswith("*"):
line = line.replace("*", "#")
if (
(":" in line)
and (not line.strip().startswith("#"))
and (not line.strip().startswith("def"))
and (not line.strip().startswith("."))
and (not line.strip().startswith("if"))
):
line = format_params(line)
if (
index < (len(lines) - 1)
and line.lstrip().startswith("#")
and lines[index + 1].lstrip().startswith(".")
):
line = ""
if (
"#" in line
and not line.strip().startswith("#")
and not line[line.index("#") - 1] == "'"
):
line = line[: line.index("#")]
if line.lstrip().startswith("."):
if lines[index - 1].strip().endswith("\\") and lines[
index - 1
].strip().startswith("#"):
lines[index - 1] = "\\"
if "#" in line:
line = line[: line.index("#")]
output = output.rstrip() + " " + "\\" + "\n" + line + "\n"
else:
output += line + "\n"
if show_map:
output += Map
out_dir = os.path.dirname(out_file)
if not os.path.exists(out_dir):
os.makedirs(out_dir)
with open(out_file, "w", encoding="utf-8") as f:
f.write(output)
return output
js_to_python_dir(in_dir, out_dir=None, use_qgis=True, github_repo=None, import_geemap=False, Map='m')
¶
Converts all Earth Engine JavaScripts in a folder recursively to Python scripts.
1 2 3 4 | |
" to the output script. Defaults to True. github_repo (str, optional): GitHub repo url. Defaults to None. import_geemap (bool, optional): Whether to add "import geemap" to the output script. Defaults to False. Map (str, optional): The name of the map variable. Defaults to "m".
Source code in geemap/conversion.py
def js_to_python_dir(
in_dir,
out_dir=None,
use_qgis=True,
github_repo=None,
import_geemap=False,
Map="m",
):
"""Converts all Earth Engine JavaScripts in a folder recursively to Python scripts.
Args:
in_dir (str): The input folder containing Earth Engine JavaScripts.
out_dir (str, optional): The output folder containing Earth Engine Python scripts. Defaults to None.
use_qgis (bool, optional): Whether to add "from ee_plugin import Map \n" to the output script. Defaults to True.
github_repo (str, optional): GitHub repo url. Defaults to None.
import_geemap (bool, optional): Whether to add "import geemap" to the output script. Defaults to False.
Map (str, optional): The name of the map variable. Defaults to "m".
"""
print("Converting Earth Engine JavaScripts to Python scripts...\n")
in_dir = os.path.abspath(in_dir)
if out_dir is None:
out_dir = in_dir
elif not os.path.exists(out_dir):
out_dir = os.path.abspath(out_dir)
os.makedirs(out_dir)
else:
out_dir = os.path.abspath(out_dir)
files = list(Path(in_dir).rglob("*.js"))
for index, in_file in enumerate(files):
print(f"Processing {index + 1}/{len(files)}: {in_file}")
# if use_qgis:
# out_file = os.path.splitext(in_file)[0] + "_qgis.py"
# else:
out_file = os.path.splitext(in_file)[0] + "_geemap.py"
out_file = out_file.replace(in_dir, out_dir)
js_to_python(
in_file,
out_file,
use_qgis,
github_repo,
import_geemap=import_geemap,
Map=Map,
)
# print("Output Python script folder: {}".format(out_dir))
py_to_ipynb(in_file, template_file=None, out_file=None, github_username=None, github_repo=None, Map='m')
¶
Converts Earth Engine Python script to Jupyter notebook.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_file |
str |
Input Earth Engine Python script. |
required |
template_file |
str |
Input Jupyter notebook template. |
None |
out_file |
str |
Output Jupyter notebook. |
None |
github_username |
str |
GitHub username. Defaults to None. |
None |
github_repo |
str |
GitHub repo name. Defaults to None. |
None |
Map |
str |
The name of the map variable. Defaults to "m". |
'm' |
Source code in geemap/conversion.py
def py_to_ipynb(
in_file,
template_file=None,
out_file=None,
github_username=None,
github_repo=None,
Map="m",
):
"""Converts Earth Engine Python script to Jupyter notebook.
Args:
in_file (str): Input Earth Engine Python script.
template_file (str): Input Jupyter notebook template.
out_file (str, optional)): Output Jupyter notebook.
github_username (str, optional): GitHub username. Defaults to None.
github_repo (str, optional): GitHub repo name. Defaults to None.
Map (str, optional): The name of the map variable. Defaults to "m".
"""
in_file = os.path.abspath(in_file)
if template_file is None:
template_file = get_nb_template()
if out_file is None:
out_file = os.path.splitext(in_file)[0] + ".ipynb"
out_py_file = os.path.splitext(out_file)[0] + "_tmp.py"
out_dir = os.path.dirname(out_file)
if not os.path.exists(out_dir):
os.makedirs(out_dir)
if out_dir == os.path.dirname(in_file):
out_py_file = os.path.splitext(out_file)[0] + "_tmp.py"
content = remove_qgis_import(in_file, Map=Map)
if content[-1].strip() == "Map":
content = content[:-1]
header = template_header(template_file)
footer = template_footer(template_file)
if (github_username is not None) and (github_repo is not None):
out_py_path = str(out_file).split("/")
index = out_py_path.index(github_repo)
out_py_relative_path = "/".join(out_py_path[index + 1 :])
out_ipynb_relative_path = out_py_relative_path.replace(".py", ".ipynb")
new_header = []
for index, line in enumerate(header):
if index < 9: # Change Google Colab and binder URLs
line = line.replace("giswqs", github_username)
line = line.replace("geemap", github_repo)
line = line.replace(
"examples/template/template.ipynb", out_ipynb_relative_path
)
new_header.append(line)
header = new_header
if content is not None:
out_text = header + content + footer
else:
out_text = header + footer
out_text = out_text[:-1] + [out_text[-1].strip()]
if not os.path.exists(os.path.dirname(out_py_file)):
os.makedirs(os.path.dirname(out_py_file))
with open(out_py_file, "w", encoding="utf-8") as f:
f.writelines(out_text)
try:
# command = 'ipynb-py-convert ' + out_py_file + ' ' + out_file
command = 'ipynb-py-convert "{}" "{}"'.format(out_py_file, out_file)
print(os.popen(command).read().rstrip())
# os.popen(command)
except Exception as e:
print("Please install ipynb-py-convert using the following command:\n")
print("pip install ipynb-py-convert")
raise Exception(e)
try:
os.remove(out_py_file)
except Exception as e:
print(e)
py_to_ipynb_dir(in_dir, template_file=None, out_dir=None, github_username=None, github_repo=None, Map='m')
¶
Converts Earth Engine Python scripts in a folder recursively to Jupyter notebooks.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_dir |
str |
Input folder containing Earth Engine Python scripts. |
required |
out_dir |
str |
Output folder. Defaults to None. |
None |
template_file |
str |
Input jupyter notebook template file. |
None |
github_username |
str |
GitHub username. Defaults to None. |
None |
github_repo |
str |
GitHub repo name. Defaults to None. |
None |
Map |
str |
The name of the map variable. Defaults to "m". |
'm' |
Source code in geemap/conversion.py
def py_to_ipynb_dir(
in_dir,
template_file=None,
out_dir=None,
github_username=None,
github_repo=None,
Map="m",
):
"""Converts Earth Engine Python scripts in a folder recursively to Jupyter notebooks.
Args:
in_dir (str): Input folder containing Earth Engine Python scripts.
out_dir str, optional): Output folder. Defaults to None.
template_file (str): Input jupyter notebook template file.
github_username (str, optional): GitHub username. Defaults to None.
github_repo (str, optional): GitHub repo name. Defaults to None.
Map (str, optional): The name of the map variable. Defaults to "m".
"""
print("Converting Earth Engine Python scripts to Jupyter notebooks ...\n")
in_dir = os.path.abspath(in_dir)
files = []
qgis_files = list(Path(in_dir).rglob("*_geemap.py"))
py_files = list(Path(in_dir).rglob("*.py"))
files = qgis_files
# if len(qgis_files) == len(py_files) / 2:
# files = qgis_files
# else:
# files = py_files
if out_dir is None:
out_dir = in_dir
elif not os.path.exists(out_dir):
out_dir = os.path.abspath(out_dir)
os.makedirs(out_dir)
else:
out_dir = os.path.abspath(out_dir)
for index, file in enumerate(files):
in_file = str(file)
out_file = (
in_file.replace(in_dir, out_dir)
.replace("_qgis", "")
.replace(".py", ".ipynb")
)
print(f"Processing {index + 1}/{len(files)}: {in_file}")
py_to_ipynb(in_file, template_file, out_file, github_username, github_repo, Map)
remove_all_indentation(input_lines)
¶
Removes all indentation for reformatting according to python's indentation rules
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
input_lines |
list |
List of Earth Engine JavaScrips |
required |
Returns:
| Type | Description |
|---|---|
list |
Output JavaScript with indentation removed |
Source code in geemap/conversion.py
def remove_all_indentation(input_lines):
"""Removes all indentation for reformatting according to python's indentation rules
Args:
input_lines (list): List of Earth Engine JavaScrips
Returns:
list: Output JavaScript with indentation removed
"""
output_lines = []
for _, line in enumerate(input_lines):
output_lines.append(line.lstrip())
return output_lines
remove_qgis_import(in_file, Map='m')
¶
Removes 'from ee_plugin import Map' from an Earth Engine Python script.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_file |
str |
Input file path of the Python script. |
required |
Map |
str |
The name of the map variable. Defaults to "m". |
'm' |
Returns:
| Type | Description |
|---|---|
list |
List of lines 'from ee_plugin import Map' removed. |
Source code in geemap/conversion.py
def remove_qgis_import(in_file, Map="m"):
"""Removes 'from ee_plugin import Map' from an Earth Engine Python script.
Args:
in_file (str): Input file path of the Python script.
Map (str, optional): The name of the map variable. Defaults to "m".
Returns:
list: List of lines 'from ee_plugin import Map' removed.
"""
in_file = os.path.abspath(in_file)
start_index = 0
with open(in_file, encoding="utf-8") as f:
lines = f.readlines()
for index, line in enumerate(lines):
if "from ee_plugin import Map" in line:
start_index = index
i = 1
while True:
line_tmp = lines[start_index + i].strip()
if line_tmp != "":
return lines[start_index + i :]
else:
i = i + 1
elif f"{Map} = geemap.Map()" in line:
return lines[index + 1 :]
template_footer(in_template)
¶
Extracts footer from the notebook template.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_template |
str |
Input notebook template file path. |
required |
Returns:
| Type | Description |
|---|---|
list |
List of lines. |
Source code in geemap/conversion.py
def template_footer(in_template):
"""Extracts footer from the notebook template.
Args:
in_template (str): Input notebook template file path.
Returns:
list: List of lines.
"""
footer = []
template_lines = []
footer_start_index = 0
with open(in_template, encoding="utf-8") as f:
template_lines = f.readlines()
for index, line in enumerate(template_lines):
if "## Display the interactive map" in line:
footer_start_index = index - 2
footer = ["\n"] + template_lines[footer_start_index:]
return footer
template_header(in_template)
¶
Extracts header from the notebook template.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_template |
str |
Input notebook template file path. |
required |
Returns:
| Type | Description |
|---|---|
list |
List of lines. |
Source code in geemap/conversion.py
def template_header(in_template):
"""Extracts header from the notebook template.
Args:
in_template (str): Input notebook template file path.
Returns:
list: List of lines.
"""
header = []
template_lines = []
header_end_index = 0
with open(in_template, encoding="utf-8") as f:
template_lines = f.readlines()
for index, line in enumerate(template_lines):
if "## Add Earth Engine Python script" in line:
header_end_index = index + 6
header = template_lines[:header_end_index]
return header
update_nb_header(in_file, github_username=None, github_repo=None)
¶
Updates notebook header (binder and Google Colab URLs).
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_file |
str |
The input Jupyter notebook. |
required |
github_username |
str |
GitHub username. Defaults to None. |
None |
github_repo |
str |
GitHub repo name. Defaults to None. |
None |
Source code in geemap/conversion.py
def update_nb_header(in_file, github_username=None, github_repo=None):
"""Updates notebook header (binder and Google Colab URLs).
Args:
in_file (str): The input Jupyter notebook.
github_username (str, optional): GitHub username. Defaults to None.
github_repo (str, optional): GitHub repo name. Defaults to None.
"""
if github_username is None:
github_username = "giswqs"
if github_repo is None:
github_repo = "geemap"
index = in_file.index(github_repo)
file_relative_path = in_file[index + len(github_repo) + 1 :]
output_lines = []
with open(in_file, encoding="utf-8") as f:
lines = f.readlines()
start_line_index = 2
start_char_index = lines[start_line_index].index("{")
matching_line_index, _ = find_matching_bracket(
lines, start_line_index, start_char_index
)
header = lines[:matching_line_index]
content = lines[matching_line_index:]
new_header = []
search_string = ""
for line in header:
line = line.replace("giswqs", github_username)
line = line.replace("geemap", github_repo)
if "master?filepath=" in line:
search_string = "master?filepath="
start_index = line.index(search_string) + len(search_string)
end_index = line.index(".ipynb") + 6
relative_path = line[start_index:end_index]
line = line.replace(relative_path, file_relative_path)
elif "/master/" in line:
search_string = "/master/"
start_index = line.index(search_string) + len(search_string)
end_index = line.index(".ipynb") + 6
relative_path = line[start_index:end_index]
line = line.replace(relative_path, file_relative_path)
new_header.append(line)
output_lines = new_header + content
with open(in_file, "w") as f:
f.writelines(output_lines)
update_nb_header_dir(in_dir, github_username=None, github_repo=None)
¶
Updates header (binder and Google Colab URLs) of all notebooks in a folder .
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_dir |
str |
The input directory containing Jupyter notebooks. |
required |
github_username |
str |
GitHub username. Defaults to None. |
None |
github_repo |
str |
GitHub repo name. Defaults to None. |
None |
Source code in geemap/conversion.py
def update_nb_header_dir(in_dir, github_username=None, github_repo=None):
"""Updates header (binder and Google Colab URLs) of all notebooks in a folder .
Args:
in_dir (str): The input directory containing Jupyter notebooks.
github_username (str, optional): GitHub username. Defaults to None.
github_repo (str, optional): GitHub repo name. Defaults to None.
"""
files = list(Path(in_dir).rglob("*.ipynb"))
for index, file in enumerate(files):
file = str(file)
if ".ipynb_checkpoints" in file:
del files[index]
count = len(files)
if files is not None:
for index, file in enumerate(files):
in_file = str(file)
print(f"Processing {index + 1}/{count}: {file} ...")
update_nb_header(in_file, github_username, github_repo)
use_math(lines)
¶
Checks if an Earth Engine uses Math library
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
lines |
list |
An Earth Engine JavaScript. |
required |
Returns:
| Type | Description |
|---|---|
[bool] |
Returns True if the script contains 'Math.'. For example 'Math.PI', 'Math.pow' |
Source code in geemap/conversion.py
def use_math(lines):
"""Checks if an Earth Engine uses Math library
Args:
lines (list): An Earth Engine JavaScript.
Returns:
[bool]: Returns True if the script contains 'Math.'. For example 'Math.PI', 'Math.pow'
"""
math_import = False
for line in lines:
if "Math." in line:
math_import = True
return math_import