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Summation, Please help i will buy you a cookie :D
Let's break it down into some steps. First consider the problem for a moment; We have the series U(n+1) = U(n)^2, U(1) = 0.5 ...

presque 11 ans il y a | 2

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hist() function: Error using .* Error in hist (line 78)
It seems as though hist() prefers floating point values (single or double). Try; hist(double(R(:))) % Histogram of red chan...

environ 11 ans il y a | 0

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Segmenting an image according a threshold
thresh = 66; I(I < thresh) = 0; I(I > thresh) = 255;

environ 11 ans il y a | 1

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How can i calculate the largest interval when the elements of an array are larger than a value?
We can find the sequence using find and diff; seq = [0 6 5 2 16 17 16 11 12 14 5 6 9 16 17 18 18 9] thresh = 15 gt = find...

environ 11 ans il y a | 0

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MATLAB Figure file trouble
Since I don't have your full code, I have made two assumptions: # I have changed the button's TAG to "button_capture" # Make...

environ 11 ans il y a | 0

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Pulling .mat files from multiple directories in one function
Windows convention with 'nix file slash...? Anyway... when you call; "load lName" it searches for lName from the current dire...

plus de 11 ans il y a | 0

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Why guidata() doesn't work on an user function?
Here's what's going on - guidata updates the handles structure in the function it's called in, but the user function that calls ...

presque 12 ans il y a | 4

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How to make available initialization variables in workspace
You probably want to set a debug point somewhere in the while loop - either use the debug command or click the tick mark next to...

environ 12 ans il y a | 0

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how to debug matlab code
<http://www.mathworks.com/help/matlab/ref/dbstop.html dbstop> is the corresponding main matlab debugging command. There are also...

environ 12 ans il y a | 2

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What's missing from MATLAB Central...
1) Github hosts a large number of MATLAB projects, and would be a great place to start if you want to jump into something collab...

environ 12 ans il y a | 1

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code to obtain better curves
If you have the curve-fitting toolbox, smooth might be a good place to start; <http://www.mathworks.com/help/curvefit/smooth.htm...

environ 12 ans il y a | 0

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File handling code for popup menu in gui
You can use the get command; get(handles.mypopup) Or for specific cases; get(handles.mypopup,'string'); % returns a...

environ 12 ans il y a | 0

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Setting different values to properties in subplots generated by a function in a plot
Here's some example code using handles; figure subplot(1,2,1); plot(x,y) subplot(1,2,2) h1 = plot(x,z) hold on h2 = p...

environ 12 ans il y a | 0

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Question about 'save' option for workspace variable saving
The filename needs to be a string. You can make a string with a variable value in it by using sprintf and providing the variable...

environ 12 ans il y a | 0

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I want to plot a line over a bar graph that shows a smooth distribution and display the mean, median, and range of the data.
You can use hold on to overlay plots (scaling factors 300, 150, 125 chosen to arbitrarily); A = randn(1000,1); hist(A) ...

environ 12 ans il y a | 0

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How do I get fprintf to display several matrices at once while maintaining the desired order?
My guess would be that this is because MATLAB uses column-major order, you could simply transpose the matrix you are sending to ...

environ 12 ans il y a | 0

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How to put a 3D bar graph besides a gray scale image?
Just saw this in the FeX, it may solve your problem; <http://www.mathworks.com/matlabcentral/fileexchange/7943-freezecolors-u...

environ 12 ans il y a | 1

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Matlab Floating point question
Your first one is perhaps not producing the results you expect it to plot(diff(start:endit)/samprate) vs. plot(diff...

environ 12 ans il y a | 0

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Import txt file into matlab using programically
The Documentation has rather extensive help for file opening, reading and saving <http://www.mathworks.com/help/techdoc/ref/f16-...

environ 12 ans il y a | 1

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I need to know where should I put a file path. nc to be read by matlab?
Do you mean 'not to be read'? Just put it somewhere that is not included in the MATLAB Path (File -> Set Path). Matlab searches ...

environ 12 ans il y a | 0

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How to use fittype and fit to get a logarithmic fit to some data
You may need to supply additional parameters to the fyttype object, otherwise it doesn't know what variables it can vary, and wh...

environ 12 ans il y a | 0

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Plotting surf tiles at the center rather than bottom left
It looks like you're using essentially a binary map for the image. I would use imagesc instead, it draws the patch centered at t...

environ 12 ans il y a | 0

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Sorting the variables in cells
I don't know of a built-in function that sorts cell arrays. I did a similar task awhile ago and had to pull out the data into a ...

environ 12 ans il y a | 0

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Capture frames from 3D comet plot to make a movie
I had the same problem as you when modifying comet3. I got the movie working, but the process eliminates the immeadiate tail of ...

environ 12 ans il y a | 0

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How can I plot a single graph that is generated from a file that contains various subfiles?
datafiles = dir('datarus*_qsStruc.mat'); nfiles = length(datafiles); % Get plot colors from a colormap mycolors = lin...

environ 12 ans il y a | 0

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BWDIST label matrix not returning expected labels
I think you really want the distMap output, which gives you the _distance_ to the nearest non-zero pixel. labelMask gives you...

plus de 12 ans il y a | 1

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Derivative of vector wrt time vector
A simple brute force numerical derivative would be find the change in x and divide by the change in t; dx = x(2:end) - x(1:...

plus de 12 ans il y a | 4

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Load CSV file to matlab and avoiding word written in csv file for data analysis
<http://www.mathworks.com/help/techdoc/ref/importdata.html importdata> does a pretty good job of separating header from file inf...

plus de 12 ans il y a | 1

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Don't understand my error mention
Can you post the code to trapezes - the error message says the problem is in there, you have something like; function Itr=t...

plus de 12 ans il y a | 1

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How do I enter more than four rows in a GUI?
That is strange... here's my fix; Go back to "Table Property Editor" -> Select "Show Names below as the column headers" Go...

plus de 12 ans il y a | 0

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