This is simple javascript program which allows to scan datapoints from image by clicking on them.
It works directly in browser. The typical workflow is presented at the bottom of this page.

Log X: Log Y:



Typical workflow:

• Load figure;
• Point 1st point on X axis;
• Press X1 to set it as a 1st point on X axis;
• Repeat it for X2, Y1 and Y2;
• Set values which correspond to selected points on axes;
• You could draw axes by clicking "Draw axes" button;
• Mark LogX of LogY if corresponding axes are at the log scale;
• Start clicking on the points of interest;
• If you want to download result click on "Download result" button;
• Button "Reset" will clear everything.

Created by Aleksei Dziuba (aka Alexey Dzyuba) and Vladimir Chulikov.