I define values for the variables and call the function, it returns the output image in the figure. But when i want to test another set of data, the output image will come out, it's together with the previous output image. How can i solve it, do i need to add what code at the end of the function file?
Either close all before your generate the new figure if you're not interested in the old output figure, or make a figure call before creating the new image to ensure it pops up in a new figure window. Or, you can overwrite the current open figure by setting hold off first, although that's specifically for graphs.
Related
I am working on a drawing app in processing and wanted to know if it is possible to create a drawing and then somehow save that drawing into some format and then load that drawing back up?
Yes.
You can output it as an image using the save() function.
Or you could output the drawing in some other format. For example, if your drawing consisted of a bunch of lines, you could save them as a text file that contained start points and end points.
How you save your data is up to you, and what you need.
Check out the input and output sections of the reference for some handy functions.
Good luck.
Apologies if this is a dupe, I've been searching for over an hour but the search terms are all really broad and I just keep getting the same results. Also I'm fairly new to matlab so apologies for any misunderstandings.
Anywho, I have a matlab program which needs to frequently save an image generated from a matrix, but I just can't figure out how to do that without displaying it first. Basically I'm caught in between two functions, image and imwrite, both only do half of what I want.
image is able to take my matrix and create the desired output, but it just displays it to a figure window
imwrite is able to save an image to a file without displaying it, but the image is completely wrong and I can't find any parameters that would fix it.
Other questions I've seen deal with using imread and managing figures and stuff, but I'm just doing (for example)
matrix = rand(20);
colormap(winter);
image(matrix, 'CDataMapping', 'scaled');
or
matrix = rand(20);
imwrite(matrix, winter(256), 'filename.png');
Is there some way to call the image function such that it doesn't display a figure window and then gets saved to a file? Something analogous to calling imshow and then savefig in matplotlib.
Just do this:
matrix = rand(20);
f = figure('visible', 'off');
colormap(winter);
image(matrix, 'CDataMapping', 'scaled');
print(f, '-dpng', 'filename.png');
i have a code which gives several images as ouput and i want to set all these images in particular axes in GUI in matlab. I'm trying to make a GUI of the code.
For eg.
figure,imshow(s1);
figure,imshow(s2);
figure,imshow(s2&s1);
and i want to set the output image of first command in, say axes3, output image of second command in axes4 and similarly last output image in axes5.
Although i know i need to use
set(handles.axes...)
command but i don't know the exact syntax on how to make the image be shown in particular axes.
Please give explain on how to make this happen with any suitable example. Thanks in advance.
One line solution (for each image) is to set the axis as the parent of the image within the imshow command;
imshow(image_Data,'Parent',handles.axes1)
There should be no need to open the additional figure windows ( assuming the axes are with the gui...)
So specifically for the question above:
imshow(s1,'Parent',handles.axes3);
imshow(s2,'Parent',handles.axes4);
imshow(s2&s1,'Parent',handles.axes5);
First you should create an axes box in your gui, then in tag section get a name i.e. (original) and finaly in editor when you want to use it code something like this
A = imread (Path);
axes(handles.original);
imshow(A);
I hope to help you...
When I use the following,
imshow(imread('image1.jpg'));
imshow(imread('image2.jpg'));
imshow(imread('image3.jpg'));
imshow(imread('image4.jpg'));
imshow(imread('image5.jpg'));
imshow(imread('image6.jpg'));
I got only image named image6.jpg in the output figure.
There is also an option figure,imshow(...); to view all the images each in new window.
But writing figure in each line where I need to view the image is a repeated and tedious process. Is there any other solution to get the same output as with figure,imshow(..);
without using figure function.
I mainly put on this question because while programming a lot somewhere we forget to use the figure function and so the image that we need to view wont be visible. It would have been overwritten by other image. So provide me some solution.
I ask this only for simplicity in writing the code. So if there is any solution, please mention.
Thanks in advance.
I'm not sure, but I don't think that there's a workaround to that. MATLAB basically changes the current figure handle to that of a new image when you use imshow. One thing you can do however is to make a copy of imshow in your local directory and edit it accordingly to make your own UDF.
What I would recommend however (so as to preserve functionality across systems) is that you open your code is an editor and replace all imshows with figure, imshow. This should be easy enough and it'll be easy to revert back as well.
I can save a particular figure or an axes by using export_fig procedure. The command used is like the following:
export_fig(handles.Myfigure, filename). % This code is available on line
But I am trying to save a copy of the main gui (like a screen shot of the whole for record keeping). I guess this could work if I knew the handle of the main panel.
Can anyone help?
Thanks
http://www.mathworks.com/help/techdoc/ref/getframe.html
Get coords of window and dimensions and pass it to this function.