Click points to select and use cursor keys to adjust positions. Use Shift+Arrow for faster movement. Click complete when finished.
Data Points: 0
Data Points: 0
Load Image File
Magnified View Settings
Choose Plot Type
X and Y Axes Calibration
Enter X-values of the two points clicked on X-axis and Y-values of the two points clicked on Y-axes
|Point 1||Point 2||Log Scale|
*For dates, use yyyy/mm/dd format (e.g. 2013/10/23 or 2013/10). For exponents, enter values as 1e-3 for 10^-3.
Select Range of Variables
Range of Variables
0 to 1
0 to 100
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Align X-Y Axes
Click four known points on the axes in the order shown in red. Two on the X axis (X1, X2) and two on the Y axis (Y1, Y2).
Align Map To Scale Bar
Click on the two ends of the scale bar on the map.
Align Polar Axes
Click on the center, followed by two known points.
Align Ternary Axes
Click on the three corners in the order shown above.
WebPlotDigitizer - Web Based Plot Digitizer
This program is distributed under the GNU General Public License Version 3.
Copyright 2010-2014 Ankit Rohatgi <firstname.lastname@example.org>
R: G: B:
The following relationships are being used to convert image pixels to data:
This JSON file contains the axes calibration and the digitized data points from this plot. This file can be imported later to resume work or reuse the calibration in another plot.
Specify a previously exported JSON file to load here. Note that this will clear any unsaved data points in the current plot.