Creating a handle.object from a string

I am trying to specify 1 of 19 axes in a GUI in a for loop. Depending on the data (randomly organized) it needs to be sorted to its appropriate axes. My sorting is working but I do not know how to reference the correct handle.axes in the loop. In my case they are axes(handle.tileN); N = 1:19.

 axes(handles.tileN);
    image(TEX)
    axis off
    axis image
I generate a string for each handle;

use = strcat('handle.tile',N)

This generates the correct string 'handle.tile1' if n=1; but I can not figure out how to then make this the correct handle. How do I make axes(handle.tileN); N = 1:19 correctly call objects?

[Stephen23]

The simplest and best solution is to change your code slightly, and use an array of handles:

H = gobjects(1,19); % or nan(...) for pre R2014b versions.
for k = 1:19
    H(k) = axes(...)
end

and then you can trivially use indexing to access each axes.

https://www.mathworks.com/help/matlab/creating_plots/concatenating-handles-into-arrays.html

https://www.mathworks.com/help/matlab/ref/gobjects.html

"use = strcat('handle.tile',N) This generates the correct string 'handle.tile1' if n=1..."

I would be very surprised if that worked. It certainly doesn't when I try it:

Answer 1

[BK]

Likely there is a more elegant solution, but the following worked for me on a similar problem. Create a cell array where elements are handle objects (not the string names), then loop through as needed.

ax = {handles.axes1, handles.axes2,...};

for idx = 1:max_idx

imagesc(ax{idx},A);

ax{idx}.XAxis.Visible = 'off';

end

[Stephen23]

Rather than creating an extra level of complication by using a cell array, you can simply put the handles into one array:

https://www.mathworks.com/help/matlab/creating_plots/concatenating-handles-into-arrays.html

https://www.mathworks.com/help/matlab/ref/gobjects.html