Friday, April 8, 2016

Extracting Data from Static Plots

In the past, I have used two programs to extract datapoints from a graph. The typical use case is to save the coordinates extracted from a pdf or png graph, so that you can use them for calculations or to overlay on your graphs.

1. DataThief: A shareware program that is cross platform. It is written in Java and works on Windows, MacOS, and Linux.

2. Engauge Digitizer: This is also cross platform. I have written a little bit about using it here.

In the past month, I discovered WebPlotDigitizer.

It is completely web-based, so on doesn't have to "install" it. This means, it is completely blind to the underlying operating system. The interface overall seems much spiffier, but I haven't taken it out for a serious test drive.

No comments: