Ben11
Université Laval
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I'm interested in microscopy, neuroscience and image processing.
Professional Interests: microscopy, image processing
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Feeds
How to generate surface of fixed width from know coordintes of curve and add pixel covered by the surface
This should do it: clear clc close all %// Define x and y to plot curve x=-10:10; y=-x.^2; %// Bu...
más de 9 años hace | 0
MATLAB R2014A - Undo/Redo buttons
Just to complement Sean's answer, they are supposed to be at the top right corner of the window right aside the search box. H...
casi 10 años hace | 13
How do i convert an image plot to a matrix.
Maybe I misunderstood but you might want to use getframe and get the cdata property: Example: x = -10:10; y = x.^2; ...
alrededor de 10 años hace | 0
Please help me make this easy plot work
Please format your code in the question. The error occurs because MATLAB does not recognize 3t as an expression. You need to ...
alrededor de 10 años hace | 0
Problem merging two images
This will work: clc clear close all I = imread('peppers.png'); [height, width,Channels] = size(I) bl...
alrededor de 10 años hace | 1
| aceptada
i have an output of the following code...but i need to do haar wavelet transform of that output.PLEASE HELP ME IN CODING
You can use <http://www.mathworks.com/matlabcentral/fileexchange/40661-haar-wavelet-transform this> submission from the File Exc...
alrededor de 10 años hace | 0
| aceptada
How do I show relative frequency on histogram?
The relative frequency is supposed to show up on the y-axis... what about this: clear all data= 10*rand(1,1000); ...
alrededor de 10 años hace | 0
mcc compiled executable didn't work!!
I think that's because, as trivial as it may sound, the disp command is used to display stuff in the Command Window, which is no...
alrededor de 10 años hace | 0
imfinfo unable to open a file
It looks like you try to open a directory instead of an image. I tried your syntax and got the same error. What if you try so...
alrededor de 10 años hace | 1
In the program below, the loop stops at theta(4). It will be a great help if you can please help me to rectify the error.
Initialize your array theta and change the upper limit of your for loop like so: theta = zeros(1,30); theta(1)= inpu...
alrededor de 10 años hace | 1
| aceptada
Read value from a graph
Not sure to understand how you would like to 'enter' the value of x, but here is a very simple example: User_x = inputdlg('...
alrededor de 10 años hace | 1
how to draw a horizontal line at 63% of process curve, and vertical line to intersection of process curve, on a plot?
Add these lines after your call to plot: line([0 10],[15.75 15.75],'Color','k','LineWidth',2) % Horizontal line line([10...
más de 10 años hace | 0
| aceptada
Passing data between axes
You can: 1) Create a dummy original image and store it in the handles structure of your GUI. handles.DummyImage = Ori...
más de 10 años hace | 1
| aceptada
How to check in which step MATALB code is running?
You might also want to look into <http://www.mathworks.com/help/matlab/ref/dbstack.html dbstack>, which tells you the actual lin...
más de 10 años hace | 0
i got an error as Warning: Ignoring extra legend entries
What if you use: legend([h1(1);h2(1);h3(1)],'f1=30','f2=120','f3=400','fontsize',10); Just an idea; h1, h2 and h3 might ...
más de 10 años hace | 0
| aceptada
Help with edit text GUI
At the beginning of this button's callback, use something like this: set(handles.edit3,'String','') which displays an em...
más de 10 años hace | 0
| aceptada
What's the best format to export figure?
Look at the <http://www.mathworks.com/help/matlab/ref/print.html print> function, with which you can export figures in eps or pd...
más de 10 años hace | 0
how to change the font size in a plot (only for the axes numbers)?
Use the 'FontSize' property of the current axes: set(gca,'FontSize',20)
más de 10 años hace | 10
| aceptada
How to extract the value pixel values from an image or masked image?
You can get the histogram of pixel values using <http://www.mathworks.com/help/images/ref/imhist.html imhist>. For example: ...
más de 10 años hace | 0
help with for statement
Adding an index to Pfwm and m might do the trick; with an alpha of 0.5 (arbitrary value) it did not give an error when I tried i...
más de 10 años hace | 0
How can I get more tick marks/precision plotyy()'s y-axis using set() or simple method?
Yes you can set the Tick marks like this: set(gca,'XTick',Begin:Increment:End); so you can customize through the Increm...
más de 10 años hace | 3
display value in message box
You can use sprintf to format the message: Message = sprintf('The value selected is %d\n',a); h = msgbox(Message)
más de 10 años hace | 0
Matrix Dimensions must agree
You're missing a "." in your division: x = [0:0.01:10]; gx = 1-(2./x.^2); plot(x,gx); axis([-1,12,-1,12])
más de 10 años hace | 2
how to plot two graphs combined
Maybe something like this: x=linspace(0,1,50) g=10; A=0.33 M=0.125 s=(A-0.5)*M.*g-(A^2)/4; theta=s./(2...
más de 10 años hace | 0
| aceptada
Problem with a conversion into avi file
You just need to convert sub_movie(:,:,k) to a double before exporting. For example: for k = 1:number writeVideo(wr...
más de 10 años hace | 1
| aceptada
Bar Graph with varying widths
For your 2nd question: In order to change the bar colors, use findobj to get the patch objects forming the bars and change th...
más de 10 años hace | 0
| aceptada
eigenvalues and orthonormal eigenvectors
Yes there is. Look at the <http://www.mathworks.com/help/matlab/ref/eig.html eig> function.
más de 10 años hace | 0
| aceptada
How can I display image size, dimensions and color type in the GUI?
You can get the information about an image file using <http://www.mathworks.com/help/matlab/ref/imfinfo.html imfinfo>, which out...
más de 10 años hace | 3
| aceptada
how can I concatenate cropped images from a folder?
Here is a bit of code to get you going. It creates a dialog title to allow the user to select the folder containing tiff files (...
más de 10 años hace | 1
Help with GUI callback - existence condition
You can check for the non-existence of a variable using this line: if ~exist('a','var') % Code else % ...
más de 10 años hace | 0
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