├── .gitignore ├── LICENSE ├── README.md ├── eejs2python └── main.py ├── setup.py └── test_eejs2python_colab.ipynb /.gitignore: -------------------------------------------------------------------------------- 1 | .Rproj.user 2 | .Rhistory 3 | .RData 4 | .Ruserdata 5 | ee-js-to-python-syntax.Rproj 6 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ee-js-to-python-syntax 2 | Simplistic conversion of earthengine JavaScript to Python syntax. 3 | 4 | **Very** preliminary proof of concept for a package that enables easy conversion of 5 | earth engine JavaScript examples to Python syntax. 6 | 7 | Potentially [jiphy](https://github.com/timothycrosley/jiphy) is usful, although 8 | it seems to be un-maintained. 9 | 10 | So far RegEx is used to convert general JS syntax to Python equilvilent. 11 | 12 | General Python frontmatter is added. 13 | 14 | TODO: 15 | + Why do some of the regex rules not always convert? 16 | + Dealing with line breaks does not always work 17 | + Comments within line breaks, break python. 18 | + Conversion of ee API calls that are not similar between JS and Python, 19 | such as plotting, run tasks, ect. 20 | 21 | 22 | ## Example 23 | see `test_eejs2python_colab.ipynb` in [Colab](https://colab.research.google.com) 24 | -------------------------------------------------------------------------------- /eejs2python/main.py: -------------------------------------------------------------------------------- 1 | # Simple conversion of earthengine JavaScript to Python syntax. 2 | 3 | import argparse 4 | import glob 5 | import os 6 | import re 7 | 8 | def main(): 9 | 10 | # Parse arguments 11 | parser = argparse.ArgumentParser() 12 | parser.add_argument('-dir', dest='js_dir', type=str, 13 | help='Path to the directory containing JavaScript files') 14 | parser.add_argument('-out', dest='out_dir', type=str, 15 | help='Path to the directory for saving converted files, this will be created if not available') 16 | parser.add_argument('-fm','--add-front-matter', dest='add_front_matter', required=False, type=bool, help='Add standard earthengine Python front matter') 17 | parser.add_argument('-cm','--convert-map', dest='convert_map', required=False, type=bool, help='Convert JS Map. to Python syntax') 18 | args = parser.parse_args() 19 | 20 | # Set defaults 21 | if args.add_front_matter: 22 | add_front_matter = bool(args.add_front_matter) 23 | else: 24 | add_front_matter = bool(False) 25 | if args.convert_map: 26 | convert_map = bool(args.convert_map) 27 | else: 28 | convert_map = bool(False) 29 | 30 | # Set paths 31 | js_dir = args.js_dir 32 | out_dir = args.out_dir 33 | 34 | # Create output directory 35 | if not os.path.isdir(out_dir): 36 | os.makedirs(out_dir) 37 | 38 | # Get file list 39 | js_files = glob.glob(js_dir + "*.js") 40 | 41 | # Define regex patterns and replacements 42 | # see https://regexr.com/ 43 | replacements = {r'\bvar\b\s':'', # remove var 44 | r'\blet\b\s':'', # remove let 45 | r'\bfunction\b\s':'def ', # function to def 46 | r'(\w+) = def ':r'def \1', # format function to def 47 | r'\)\s\{':r'):', # format { to : 48 | r'^\}':'', # format } 49 | r'\/\*\*':'\"\"\"\"', # format multi-line comments 50 | r'\s\*\s':' ', # format multi-line comments 51 | r'\s\*\/':'\"\"\"', # format multi-line comments 52 | r'\n^\s* {4}|\n^\s* {2}':r' \\\n ', # format chaining of functions 53 | r'//\s':r'# ', # format single-line comments 54 | r'\b\.and\b':'.And', # captilise .and 55 | r'\b\)\.and\b':').And', # captilise .and 56 | r'\b\.or\b':'.Or', # captilise .or 57 | r';':'' # remove ; 58 | } 59 | 60 | # Replace text 61 | def replace_all(text, replacements): 62 | for i, j in replacements.items(): 63 | text = re.sub(i, j, text, flags=re.M) 64 | return text 65 | 66 | # Add ee python front matter 67 | fm = "#!/usr/bin/env python\n\n# Import earthengine API\nimport ee\n\n# Initialise\nee.Initialize()\n\n" 68 | def add_fm(text, fm): 69 | return fm + text 70 | 71 | # Convert Map.addlayer syntax 72 | # FIX ME!! 73 | def convert_map(text): 74 | i = r'^Map.addLayer\(.+' 75 | text = re.findall(i,py_code, flags=re.M) 76 | text = ''.join(text) 77 | print(text) 78 | image = re.findall(r'\((\w+)', text) 79 | bands = re.findall(r'bands:\s\[.+]', text) 80 | min = re.findall(r'min:\s\d,', text) 81 | max = re.findall(r'max:\s.+,', text) 82 | # return correctly formatted! 83 | 84 | # Convert Map.center syntax 85 | # FIX ME!! 86 | 87 | # Given a single js file convert it to python 88 | def js_to_python(js_file, out_dir=out_dir, replacements=replacements, add_front_matter=add_front_matter, convert_map=convert_map): 89 | # Open js file 90 | js = open(js_file, 'r') 91 | # Read js code 92 | js_code = js.read() 93 | # Convert to python 94 | py_code = replace_all(js_code, replacements) 95 | # Add front matter 96 | if add_front_matter == True: 97 | py_code = add_fm(py_code, fm) 98 | #FIXME!!! 99 | #if convert_map == True: 100 | # py_code = convert_map(py_code) 101 | # Open py file to write 102 | p = os.path.split(js_file) 103 | n = str.split(p[1], ".js") 104 | jspy = open(os.path.join(out_dir, n[0]) + ".py", 'w') 105 | # Write py code 106 | jspy.write(py_code) 107 | print("Conversion written to ", jspy) 108 | 109 | # Convert all js files in directory 110 | [js_to_python(f) for f in js_files] 111 | 112 | if __name__ == "__main__": 113 | main() 114 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | from setuptools import setup 2 | 3 | setup(name='eejs2python', 4 | version='0.01', 5 | description='Simple conversion of earthengine JavaScript to Python syntax', 6 | url='https://github.com/gee-community/ee-js-to-python-syntax', 7 | author='Edward P. Morris', 8 | author_email='edward.morris.1976@gmail.com', 9 | license='GPL-3', 10 | packages=['eejs2python']) 11 | -------------------------------------------------------------------------------- /test_eejs2python_colab.ipynb: -------------------------------------------------------------------------------- 1 | { 2 | "nbformat": 4, 3 | "nbformat_minor": 0, 4 | "metadata": { 5 | "colab": { 6 | "name": "test_eejs2python_colab.ipynb", 7 | "version": "0.3.2", 8 | "views": {}, 9 | "default_view": {}, 10 | "provenance": [] 11 | }, 12 | "kernelspec": { 13 | "name": "python3", 14 | "display_name": "Python 3" 15 | } 16 | }, 17 | "cells": [ 18 | { 19 | "metadata": { 20 | "id": "k7al_QuKIcHW", 21 | "colab_type": "code", 22 | "colab": { 23 | "autoexec": { 24 | "startup": false, 25 | "wait_interval": 0 26 | } 27 | } 28 | }, 29 | "cell_type": "code", 30 | "source": [ 31 | "!rm -r ee-js-to-python-syntax earthengine-api" 32 | ], 33 | "execution_count": 0, 34 | "outputs": [] 35 | }, 36 | { 37 | "metadata": { 38 | "id": "cTF369ihHLgo", 39 | "colab_type": "code", 40 | "colab": { 41 | "autoexec": { 42 | "startup": false, 43 | "wait_interval": 0 44 | }, 45 | "base_uri": "https://localhost:8080/", 46 | "height": 104 47 | }, 48 | "outputId": "c7663df4-eb56-4984-bd15-e422a8725f05", 49 | "executionInfo": { 50 | "status": "ok", 51 | "timestamp": 1529313341861, 52 | "user_tz": -120, 53 | "elapsed": 2300, 54 | "user": { 55 | "displayName": "Edward P Morris", 56 | "photoUrl": "https://lh3.googleusercontent.com/a/default-user=s128", 57 | "userId": "106980417751136741386" 58 | } 59 | } 60 | }, 61 | "cell_type": "code", 62 | "source": [ 63 | "# Get the package\n", 64 | "!git clone https://github.com/gee-community/ee-js-to-python-syntax.git" 65 | ], 66 | "execution_count": 85, 67 | "outputs": [ 68 | { 69 | "output_type": "stream", 70 | "text": [ 71 | "Cloning into 'ee-js-to-python-syntax'...\n", 72 | "remote: Counting objects: 18, done.\u001b[K\n", 73 | "remote: Compressing objects: 100% (12/12), done.\u001b[K\n", 74 | "remote: Total 18 (delta 5), reused 14 (delta 4), pack-reused 0\u001b[K\n", 75 | "Unpacking objects: 100% (18/18), done.\n" 76 | ], 77 | "name": "stdout" 78 | } 79 | ] 80 | }, 81 | { 82 | "metadata": { 83 | "id": "0wBymPFt8M0S", 84 | "colab_type": "code", 85 | "colab": { 86 | "autoexec": { 87 | "startup": false, 88 | "wait_interval": 0 89 | }, 90 | "base_uri": "https://localhost:8080/", 91 | "height": 225 92 | }, 93 | "outputId": "a31297f1-3016-4146-d6cf-bbda4a08007a", 94 | "executionInfo": { 95 | "status": "ok", 96 | "timestamp": 1529313344526, 97 | "user_tz": -120, 98 | "elapsed": 597, 99 | "user": { 100 | "displayName": "Edward P Morris", 101 | "photoUrl": "https://lh3.googleusercontent.com/a/default-user=s128", 102 | "userId": "106980417751136741386" 103 | } 104 | } 105 | }, 106 | "cell_type": "code", 107 | "source": [ 108 | "# See the comandline options\n", 109 | "%run ee-js-to-python-syntax/eejs2python/main -h\n" 110 | ], 111 | "execution_count": 86, 112 | "outputs": [ 113 | { 114 | "output_type": "stream", 115 | "text": [ 116 | "usage: main.py [-h] [-dir JS_DIR] [-out OUT_DIR] [-fm ADD_FRONT_MATTER]\n", 117 | " [-cm CONVERT_MAP]\n", 118 | "\n", 119 | "optional arguments:\n", 120 | " -h, --help show this help message and exit\n", 121 | " -dir JS_DIR Path to the directory containing JavaScript files\n", 122 | " -out OUT_DIR Path to the directory for saving converted files, this\n", 123 | " will be created if not available\n", 124 | " -fm ADD_FRONT_MATTER, --add-front-matter ADD_FRONT_MATTER\n", 125 | " Add standard earthengine Python front matter\n", 126 | " -cm CONVERT_MAP, --convert-map CONVERT_MAP\n", 127 | " Convert JS Map. to Python syntax\n" 128 | ], 129 | "name": "stdout" 130 | } 131 | ] 132 | }, 133 | { 134 | "metadata": { 135 | "id": "hlU89IvA4BTt", 136 | "colab_type": "code", 137 | "colab": { 138 | "autoexec": { 139 | "startup": false, 140 | "wait_interval": 0 141 | }, 142 | "base_uri": "https://localhost:8080/", 143 | "height": 121 144 | }, 145 | "outputId": "e3cb0039-a4be-4d50-8b18-50e83bebeb3a", 146 | "executionInfo": { 147 | "status": "ok", 148 | "timestamp": 1529313352919, 149 | "user_tz": -120, 150 | "elapsed": 5062, 151 | "user": { 152 | "displayName": "Edward P Morris", 153 | "photoUrl": "https://lh3.googleusercontent.com/a/default-user=s128", 154 | "userId": "106980417751136741386" 155 | } 156 | } 157 | }, 158 | "cell_type": "code", 159 | "source": [ 160 | "# Get some examples\n", 161 | "!git clone https://github.com/google/earthengine-api.git" 162 | ], 163 | "execution_count": 87, 164 | "outputs": [ 165 | { 166 | "output_type": "stream", 167 | "text": [ 168 | "Cloning into 'earthengine-api'...\n", 169 | "remote: Counting objects: 4010, done.\u001b[K\n", 170 | "remote: Compressing objects: 100% (54/54), done.\u001b[K\n", 171 | "remote: Total 4010 (delta 14), reused 47 (delta 13), pack-reused 3939\u001b[K\n", 172 | "Receiving objects: 100% (4010/4010), 10.17 MiB | 31.10 MiB/s, done.\n", 173 | "Resolving deltas: 100% (2463/2463), done.\n" 174 | ], 175 | "name": "stdout" 176 | } 177 | ] 178 | }, 179 | { 180 | "metadata": { 181 | "id": "agypjMJB5tEq", 182 | "colab_type": "code", 183 | "colab": { 184 | "autoexec": { 185 | "startup": false, 186 | "wait_interval": 0 187 | }, 188 | "base_uri": "https://localhost:8080/", 189 | "height": 121 190 | }, 191 | "outputId": "c8cc34f4-41cb-435d-f4bf-c465af16390a", 192 | "executionInfo": { 193 | "status": "ok", 194 | "timestamp": 1529313356506, 195 | "user_tz": -120, 196 | "elapsed": 1626, 197 | "user": { 198 | "displayName": "Edward P Morris", 199 | "photoUrl": "https://lh3.googleusercontent.com/a/default-user=s128", 200 | "userId": "106980417751136741386" 201 | } 202 | } 203 | }, 204 | "cell_type": "code", 205 | "source": [ 206 | "# See which examples are available\n", 207 | "!ls earthengine-api/javascript/src/examples/Image" 208 | ], 209 | "execution_count": 88, 210 | "outputs": [ 211 | { 212 | "output_type": "stream", 213 | "text": [ 214 | "CannyEdgeDetector.js\t\t Hillshade.js\t\t PixelArea.js\r\n", 215 | "CenterPivotIrrigationDetector.js HoughTransform.js\t PixelLonLat.js\r\n", 216 | "Clamp.js\t\t\t HSVPanSharpening.js\t Polynomial.js\r\n", 217 | "ConnectedPixelCount.js\t\t LandcoverCleanup.js\t ReduceRegion.js\r\n", 218 | "Expression.js\t\t\t ModisQaBands.js\t ZeroCrossing.js\r\n", 219 | "FromName.js\t\t\t NormalizedDifference.js\r\n" 220 | ], 221 | "name": "stdout" 222 | } 223 | ] 224 | }, 225 | { 226 | "metadata": { 227 | "id": "QVPdE_hn4YuP", 228 | "colab_type": "code", 229 | "colab": { 230 | "autoexec": { 231 | "startup": false, 232 | "wait_interval": 0 233 | }, 234 | "base_uri": "https://localhost:8080/", 235 | "height": 312 236 | }, 237 | "outputId": "99e6e369-004d-43ad-ab1b-1d08781e21f7", 238 | "executionInfo": { 239 | "status": "ok", 240 | "timestamp": 1529313366133, 241 | "user_tz": -120, 242 | "elapsed": 538, 243 | "user": { 244 | "displayName": "Edward P Morris", 245 | "photoUrl": "https://lh3.googleusercontent.com/a/default-user=s128", 246 | "userId": "106980417751136741386" 247 | } 248 | } 249 | }, 250 | "cell_type": "code", 251 | "source": [ 252 | "%run main.py -dir earthengine-api/javascript/src/examples/Image/ -out converted_python -fm True\n" 253 | ], 254 | "execution_count": 89, 255 | "outputs": [ 256 | { 257 | "output_type": "stream", 258 | "text": [ 259 | "Conversion written to <_io.TextIOWrapper name='converted_python/ReduceRegion.py' mode='w' encoding='UTF-8'>\n", 260 | "Conversion written to <_io.TextIOWrapper name='converted_python/NormalizedDifference.py' mode='w' encoding='UTF-8'>\n", 261 | "Conversion written to <_io.TextIOWrapper name='converted_python/ConnectedPixelCount.py' mode='w' encoding='UTF-8'>\n", 262 | "Conversion written to <_io.TextIOWrapper name='converted_python/FromName.py' mode='w' encoding='UTF-8'>\n", 263 | "Conversion written to <_io.TextIOWrapper name='converted_python/PixelArea.py' mode='w' encoding='UTF-8'>\n", 264 | "Conversion written to <_io.TextIOWrapper name='converted_python/ModisQaBands.py' mode='w' encoding='UTF-8'>\n", 265 | "Conversion written to <_io.TextIOWrapper name='converted_python/HoughTransform.py' mode='w' encoding='UTF-8'>\n", 266 | "Conversion written to <_io.TextIOWrapper name='converted_python/Polynomial.py' mode='w' encoding='UTF-8'>\n", 267 | "Conversion written to <_io.TextIOWrapper name='converted_python/Clamp.py' mode='w' encoding='UTF-8'>\n", 268 | "Conversion written to <_io.TextIOWrapper name='converted_python/Hillshade.py' mode='w' encoding='UTF-8'>\n", 269 | "Conversion written to <_io.TextIOWrapper name='converted_python/LandcoverCleanup.py' mode='w' encoding='UTF-8'>\n", 270 | "Conversion written to <_io.TextIOWrapper name='converted_python/CannyEdgeDetector.py' mode='w' encoding='UTF-8'>\n", 271 | "Conversion written to <_io.TextIOWrapper name='converted_python/PixelLonLat.py' mode='w' encoding='UTF-8'>\n", 272 | "Conversion written to <_io.TextIOWrapper name='converted_python/CenterPivotIrrigationDetector.py' mode='w' encoding='UTF-8'>\n", 273 | "Conversion written to <_io.TextIOWrapper name='converted_python/Expression.py' mode='w' encoding='UTF-8'>\n", 274 | "Conversion written to <_io.TextIOWrapper name='converted_python/HSVPanSharpening.py' mode='w' encoding='UTF-8'>\n", 275 | "Conversion written to <_io.TextIOWrapper name='converted_python/ZeroCrossing.py' mode='w' encoding='UTF-8'>\n" 276 | ], 277 | "name": "stdout" 278 | } 279 | ] 280 | }, 281 | { 282 | "metadata": { 283 | "id": "LZQi8E7ZA0wO", 284 | "colab_type": "code", 285 | "colab": { 286 | "autoexec": { 287 | "startup": false, 288 | "wait_interval": 0 289 | }, 290 | "base_uri": "https://localhost:8080/", 291 | "height": 573 292 | }, 293 | "outputId": "275bd7a6-3864-43c8-94c6-d4431b52863d", 294 | "executionInfo": { 295 | "status": "ok", 296 | "timestamp": 1529313374034, 297 | "user_tz": -120, 298 | "elapsed": 1669, 299 | "user": { 300 | "displayName": "Edward P Morris", 301 | "photoUrl": "https://lh3.googleusercontent.com/a/default-user=s128", 302 | "userId": "106980417751136741386" 303 | } 304 | } 305 | }, 306 | "cell_type": "code", 307 | "source": [ 308 | "# Check out the conversion\n", 309 | "# Note conversion of Map.addLayer ect is still to be implemented\n", 310 | "!cat converted_python/HSVPanSharpening.py" 311 | ], 312 | "execution_count": 90, 313 | "outputs": [ 314 | { 315 | "output_type": "stream", 316 | "text": [ 317 | "#!/usr/bin/env python\r\n", 318 | "\r\n", 319 | "# Import earthengine API\r\n", 320 | "import ee\r\n", 321 | "import ee.mapclient\r\n", 322 | "\r\n", 323 | "# Initialise\r\n", 324 | "ee.Initialize()\r\n", 325 | "\r\n", 326 | "# HSV-based Pan-Sharpening.\r\n", 327 | "\r\n", 328 | "# Grab a sample L8 image and pull out the RGB and pan bands.\r\n", 329 | "image = ee.Image(ee.ImageCollection('LANDSAT/LC08/C01/T1_TOA')\r\n", 330 | " .filterDate('2017-01-01', '2017-12-31')\r\n", 331 | " .filterBounds(ee.Geometry.Point(-122.0808, 37.3947))\r\n", 332 | " .sort('CLOUD_COVER')\r\n", 333 | " .first());\r\n", 334 | "\r\n", 335 | "rgb = image.select('B4', 'B3', 'B2');\r\n", 336 | "pan = image.select('B8');\r\n", 337 | "\r\n", 338 | "# Convert to HSV, swap in the pan band, and convert back to RGB.\r\n", 339 | "huesat = rgb.rgbToHsv().select('hue', 'saturation');\r\n", 340 | "upres = ee.Image.cat(huesat, pan).hsvToRgb();\r\n", 341 | "\r\n", 342 | "# There are many fine places to look; here is one. Comment\r\n", 343 | "# this out if you want to twiddle knobs while panning around.\r\n", 344 | "Map.setCenter(-122.0808, 37.3947, 14);\r\n", 345 | "\r\n", 346 | "# Display before and after layers using the same vis parameters.\r\n", 347 | "Map.addLayer(rgb, {max: 0.3}, 'Original');\r\n", 348 | "Map.addLayer(upres, {max: 0.3}, 'Pansharpened');\r\n" 349 | ], 350 | "name": "stdout" 351 | } 352 | ] 353 | } 354 | ] 355 | } --------------------------------------------------------------------------------