https://peertube.magdowski.de/videos/watch/e55baa39-e6fa-4677-ae4c-9f1bcfada0a9 In this tutorial, I will briefly show how to use the WebPlotDigitizer tool in order to extract the data from a polar plot that is saved as an image file in order to re-plot or further process that data. Before this, I demonstrate how to recolor the lines in the figure using XnView and Microsoft Paint to allow for an automatic recognition of the traces. Links: Extract data from charts (A large quantity of useful data is locked away in images of data visualizations. WebPlotDigitizer is a computer vision assisted software that helps extract numerical data from images of a variety of data visualizations.): https://automeris.io/, XnView (Professional Image Viewer, Photo Management, Image Resizer & Batch Converter): https://www.xnview.com/en/xnview/, German version of the video: https://youtu.be/r_M_qXNOEUg, Plots and data set: https://cloud.ovgu.de/s/WK6Nm2irjfckrJx, Chapter marks: 0:00 Introduction 2:08 Changing the colors 4:13 Calibration and extraction Tue, 21 Jul 2026 13:06:33 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.magdowski.de https://peertube.magdowski.de/lazy-static/avatars/df74db12-5ddc-45c0-afab-4cdf2486a5a1.jpg https://peertube.magdowski.de/videos/watch/e55baa39-e6fa-4677-ae4c-9f1bcfada0a9 All rights reserved, unless otherwise specified in the terms specified at https://peertube.magdowski.de/about and potential licenses granted by each content's rightholder.