click workspace variable / figure marker point to activate function

Hi has anyone tried to link entries of a variable to specific text files. Assuming there is a variable A = [2 3; 5 6], and I will want to have the ability to click on, say, 3 when I open the variable A in the workspace and automatically pick up a text file named 3 to plot? I presume I will have to write a function script for the plotting but how can I set MATLAB up in such a way that a click can activate the function. An extension is even to be able to do that when I click the marker point of a variable in a figure. Can that be done?

Answer 1

[Walter Roberson]

Doing it by clicking on the number inside the workspace variable viewer is going to be difficult to find the interface for -- I don't think that level is documented (and it is probably in Java.)

Your "extension" is much easier. You can set a callback function to be activated when the line object is selected; by examining the figure CurrenPoint you can figure out where you are on the line. Or I seem to recall that datacursor() can figure out where you are. And there is also data brushing, which I am pretty sure allows you to figure out where you are on a line, but I have not researched it enough to figure out how it works.

[Bonaventure Mills-Dadson]

Sorry for commenting this late. I had to take time off to work on something else. But your suggestion for using the callback feature did work. Thanks for that. I had to use the 'ButtonDownFcn' for a left mouse button click on the graph to grab the properties and plot it for me.