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        "author": "Dilawar Singh",
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        "classifiers": [
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            "License :: OSI Approved :: MIT License",
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            "Programming Language :: Python"
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        "description": "[![Build Status](https://travis-ci.org/dilawar/PlotDigitizer.svg?branch=master)](https://travis-ci.org/dilawar/PlotDigitizer) [![PyPI version](https://badge.fury.io/py/PlotDigitizer.svg)](https://badge.fury.io/py/PlotDigitizer) \n\n# PlotDigitizer\n\nA python (python3) script to digitize plot (Under developement)\n\n# Usage\n\n1. Remove all the text from the image. Only axis and plot should be left.\n\nThis is from MacFadden and Koshland, PNAS 1990. \n![](./figures/original.png)\n\nIt should be trimmed. Ideally you should also remove the top border. You can use `gimp`\nor `imagemagick` or any other tool for cropping.\n\n![](./figures/trimmed.png)\n\n2. Then we run the script like this.\n\n```\n./plotdigitizer.py -i ./figures/trimmed.png -p 0,0 -p 10,0 -p 0,1\n```\n\nOption `-i` accepts the input file. \n\nWe need at least 3 of them to map the coordinate systems onto the pixel-system\nin the image. These points are passed by repeated `-p` options. In the example\nabove, we have given three data-points `0,0` (where x-axis and y-axis intesect)\n, `20,0` (a point on x-axis) and `0,1` (a point on y-axis).\n\nWe are going to click on the image to locate these coordinates later. Make sure\nto click in the same order. \n\n3. The data-points will be dumped to a csv file. If `--plot` option is given from command \nline, it will also plot the computed data-points. This requires `matplotlib`.\n\n![](./figures/traj.png)\n\nNotice the errors near the boxes; since we have not trimmed them.\n\n# Passing the location of coordinates manually\n\n__IMP:__ Bottom left corner of the image is `(0,0)` in most plots. However, for\nopencv which we are using in this project, top-left is mapped to `(0,0)`. This\nmay cause subtle effects if you are not careful when passing values of location\nmanually.  See issue #1 for discussion. I got these values from program `gimp`.\n\n```bash\n./plotdigitizer.py -i ./figures/trimmed.png -p 0,0 -p 20,0 -p 0,1 \\\n    -l 22,295 -l 142,295 -l 22,215 --plot\n```\n\n# Limitations\n\nCurrently this script has following limitations:\n\n- Background must not be transparent. It might work with transparent background but\n  I've not tested it.\n- Only b/w images are supported for now. Color images will be converted to grayscale upon reading.\n- One image should have only one trajectory.\n\nYou might be interested in more versatile\n[WebPlotDigitizer](https://automeris.io/WebPlotDigitizer/) by Ankit Rohatagi.\n\n# Development\n\nIf you enhance the script, feel free to send a PR.",
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