File Exchange

image thumbnail

Graph Picker

version 1.1 (158 KB) by

Helps digitize graph data from an image.



View License

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

Comments and Ratings (3)

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);

Sebastian Hölz

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

Ligong Han

Ligong Han (view profile)



Fixed typo in description.

MATLAB Release
MATLAB 8.1 (R2013a)

MATLAB Online Live Editor Challenge

Win cash prizes and have your live script featured on our website

Learn more

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

» Watch video