using image in gui
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hello I'm new to matlab I hope you can help me
I'm making program in gui that can import image
so i wrote this code
[filename, pathname] = uigetfile('*.png');
layout=imread(filename);
imshow(layout);
and when i press button I want to open the image in new window with a grid on it
how can i do this
your help will be appreciated
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Answers (2)
Geoff Hayes
on 15 Feb 2015
Shaimaa - presumably your code (from above) will be placed in the callback function to a pushbutton on your GUI that has been created with GUIDE. If your pushbutton is named (or its Tag property is set to) pushbutton1, then the callback would look like
function pushbutton1_Callback(hObject, eventdata, handles)
% let the user choose the file
[filename, pathname] = uigetfile('*.png');
Now once the file has been picked, you want to read it (as you have shown) with imread. But you will have to include the path to the file and not just the file name. Use the function fullfile to "build" the path with file name for you
layout=imread(fullfile(pathname,filename));
imshow(layout);
The above should display the image in a new figure. If you want the grid lines to display, then use grid as
grid on;
These four lines of code will make up the body of your callback. Try the above and see what happens!
6 Comments
Image Analyst
on 17 Feb 2015
If you want your tick marks to read from 0 to 4 cm horizontally and 0 to 3, then do this:
rgbImage = imread('onion.png');
imshow(rgbImage, 'Xdata',[0 4], 'Ydata', [0, 3]);
axis on;
Otherwise the tick marks will read out in units of pixels.
3 Comments
Image Analyst
on 17 Feb 2015
Edited: Image Analyst
on 17 Feb 2015
You're welcome. Note though that this just affects the display. If you make any measurements with regionprops, such as area, the values are still in pixels. Can you mark the answer as "Accepted" then? Thanks in advance.
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