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Graph Picker

5.0 | 1 rating Rate this file 9 Downloads (last 30 days) File Size: 158 KB File ID: #41313 Version: 1.1
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Graph Picker


Travis Wiens (view profile)


16 Apr 2013 (Updated )

Helps digitize graph data from an image.

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Often we receive data in graphical form (e.g. from data sheets), but want that same data in numerical form. This can be time consuming to manually read points from a graph. This package provides a GUI to assist in this task.

One simply identifies two known x-values and two known y-values from the graph image as reference points. Then one may click on any point on the graph and the GUI will return its x and y value.

Works with linear and log scales. Also generates axes data if you want to plot other data over your image at the same scaling.

For more information, please see or

Required Products MATLAB
MATLAB release MATLAB 8.1 (R2013a)
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Comments and Ratings (3)
29 Jan 2016 Sebastian Hölz

To enable import of indexed images, change / insert the following for line 77:

[im, map] = imread(filename);
if ~isempty(map)
if ~isempty(map)
im = ind2rgb(im,map);

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16 Aug 2013 Sebastian Hölz

You should give the links to the required files (rotate_image, imclipboard).

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19 Apr 2013 Ligong Han

Ligong Han (view profile)

18 Apr 2013 1.1

Fixed typo in description.

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