219
edits
Changes
Jump to navigation
Jump to search
Create a GUI example page
= uicontrols: Build a GUI in GNU Octave =
You have to use the "qt" graphics toolkit (default since 4.0). For the best results GNU Octave version >= 4.2.x should be used.
== Resources ==
* https://www.gnu.org/software/octave/doc/interpreter/GUI-Development.html
== Examples ==
=== imageViewer ===
GUI which opens a file selection dialog when a button is pressed and views the selected image.
[[File:imageViewer1.png]] [[File:imageViewer2.png]]
{{Code|imageViewer example|<pre>
%% In file 'imageViewer.m'
function imageViewer ()
MainFrm = figure ( ...
'position', [100, 100, 250, 350]);
TitleFrm = axes ( ...
'position', [0, 0.8, 1, 0.2], ...
'color', [0.9, 0.95, 1], ...
'xtick', [], ...
'ytick', [], ...
'xlim', [0, 1], ...
'ylim', [0, 1] );
Title = text (0.05, 0.5, 'Preview Image', 'fontsize', 30);
ImgFrm = axes ( ...
'position', [0, 0.2, 1, 0.6], ...
'xtick', [], ...
'ytick', [], ...
'xlim', [0, 1], ...
'ylim', [0, 1]);
ButtonFrm = uicontrol (MainFrm, ...
'style', 'pushbutton', ...
'string', 'OPEN THE IMAGE', ...
'units', 'normalized', ...
'position', [0, 0, 1, 0.2], ...
'callback', { @previewImage, ImgFrm });
end
%% callback subfunction (in same file)
function previewImage (hObject, eventdata, ImageFrame)
[fname, fpath] = uigetfile();
Img = imread (fullfile(fpath, fname));
axes(ImageFrame);
imshow(Img, []);
axis image off
end
</pre>}}
Then run <code>imageViewer()</code> from your terminal:
You have to use the "qt" graphics toolkit (default since 4.0). For the best results GNU Octave version >= 4.2.x should be used.
== Resources ==
* https://www.gnu.org/software/octave/doc/interpreter/GUI-Development.html
== Examples ==
=== imageViewer ===
GUI which opens a file selection dialog when a button is pressed and views the selected image.
[[File:imageViewer1.png]] [[File:imageViewer2.png]]
{{Code|imageViewer example|<pre>
%% In file 'imageViewer.m'
function imageViewer ()
MainFrm = figure ( ...
'position', [100, 100, 250, 350]);
TitleFrm = axes ( ...
'position', [0, 0.8, 1, 0.2], ...
'color', [0.9, 0.95, 1], ...
'xtick', [], ...
'ytick', [], ...
'xlim', [0, 1], ...
'ylim', [0, 1] );
Title = text (0.05, 0.5, 'Preview Image', 'fontsize', 30);
ImgFrm = axes ( ...
'position', [0, 0.2, 1, 0.6], ...
'xtick', [], ...
'ytick', [], ...
'xlim', [0, 1], ...
'ylim', [0, 1]);
ButtonFrm = uicontrol (MainFrm, ...
'style', 'pushbutton', ...
'string', 'OPEN THE IMAGE', ...
'units', 'normalized', ...
'position', [0, 0, 1, 0.2], ...
'callback', { @previewImage, ImgFrm });
end
%% callback subfunction (in same file)
function previewImage (hObject, eventdata, ImageFrame)
[fname, fpath] = uigetfile();
Img = imread (fullfile(fpath, fname));
axes(ImageFrame);
imshow(Img, []);
axis image off
end
</pre>}}
Then run <code>imageViewer()</code> from your terminal: