CODEWITHSUNDEEP
matlabmatlab-figure
jakub
jakub

Reputation: 5104

Edit objects within a figure

I have figures (in Matlab's fig file format) each of which contains a line plot with two lines (representing EEG curves), axes, bunch of labels etc.

I want to:

  1. change the color of the lines
  2. remove some of the labels

I would loop over the fig files and do the same thing for each of them.

Is there a list of all the objects within the figure that I could index and edit? How can I get to those objects using commands (i.e. without the gui)?

Upvotes: 0

Views: 115

Answers (1)

user3667217
user3667217

Reputation: 2192

Line, lable, etc. are children of axis, which is itself a child of a figure. What you need to do is acquire handles to the objects you want to change through this hierarchy. 

% Get a handle to the figure 
hfig = openfig('testfig');

% Get all children of the CurrentAxes. Most of what you want is here.
axes_obj = allchild(hfig.CurrentAxes);

% Edit Axes object according to its type
For ii = 1:length(axes_obj)
    switch axes_obj(ii).Type
        case 'Text'
            % Do something, for example:
            axes_obj(ii).String = 'changed';
        case 'Line'
            % Do something, for example:
            axes_obj(ii).MarkerEdgeColor = 'b';
    end
end

% Save figure
savefig(hfig, 'testfig')

You can see all the properties of the object you wish to edit by simply typing axes_obj(ii) in the command window.

Upvotes: 3

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