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How to clear all the connected pixel in order to separate every objects
use *bwconncomp* Here is more info on that: http://www.mathworks.com/help/images/ref/bwconncomp.html

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truecolor error in changing RGB of pixels
pic(pic(:,:,2)>1)=1 and pic(pic(:,:,3)>1)=1 These are not doing what you think they should do. The best is to ch...

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How to graph the outline of a curve
How does this work for you? load Example [pks,locs]=findpeaks(T,x,'MinPeakDistance',3); plot(x,T); hold on plot...

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Is there any more effiecient way to implement this?
scatteredInterpolant is suitable for cases where your source grid is scattered. If you were able to use interp2 it means that yo...

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how to plot the data and superimpose the mean of the data?
% Generating some sample data t=linspace(0,2*pi,100); U=sin(t); % Ploting velocity plot(t, U); axis tight ...

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Running a function of 2 variables
cr = [0:.1:1]; wn = [0:.1:1]; f=@(cr,wn) sqrt(1-2.*cr.*(1-cos(pi.*wn)).*(1-cr)) amp=bsxfun(f,cr',wn) I think t...

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Collision Detection of a Projectile on an Object
Nice project. So you have basically bunch of points and the normal vectors at those vector. I am sure if we go to graphic ...

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find the last non-zero column in matrix in pre-allocated matrix
1) if you are looking for las non-zero column why the answer to your example is row 6? 2) if you are looking for last non-zer...

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diary, how to create a new one
could you paste the value for *savdir* and *['file_',mfilename,myFolder(53:end),'diary.txt']?* also execute *fullfile(savdir,...

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Solving simultaneous equations numerically
Here is what you need to do 1) write a function like this: funX=@(x,y,N,a,q) sum((a-b.*x)./((a-b.*x).^2+q.^2.*y.^2)); ...

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finding the coordinates of points with maximum intensity
If "I" is your intensity image and your threshold is stored in "thresh" pretty much all you need to do is: mask= I>Thresh ...

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Adding Gaussian noise to a set of points
y = awgn(x,snr) adds Gaussian noise. Perhaps you need to keep SNR bigger. 0.1 is too low.

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Question

GPU Memory going down
Hi, I have a Mac Book Pro with NVIDIA GeForce GT 750M 2048 MB installed. I noticed that when I am trying to assign a varia...

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Need help with Loop coding
So your code to calculate temperature is too long to follow: Here is the general idea. Let's say you can calculate T at da...

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How to get the diagonal and a subdiagonal in the same matrix?
A=[ 1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16] B=triu(A)-triu(A,2) B = 1 ...

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how to generate a matrix whose elements are two dimension t random numbers?
You need to either generate rand(100,100,2) or you need to make a cell array of 100x100 where each element is of form [x y] O...

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How do you sum the number of boxes in this cell array?
Does this work: sum(cell2mat(boxData(2:3:end)))

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how to find the area of a fraction of the matrix with the specific element
Just do this: assuming that A is the matrix that you have its element changing to 1 and you want to see what fraction of this ma...

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How to compute area under histogram?
You can do that and manually compute the 80 percentile value or you can use the matlab function Y = prctile(X,p) where X...

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How to outline a curve
This could be also helpful http://www.mathworks.com/matlabcentral/fileexchange/38841-matlab-implementation-of-harmonic-anal...

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Can any one suggest a reference that describes the contrast limited adaptive histogram equalization technique in details?
[1] Zuiderveld, Karel. "Contrast Limited Adaptive Histograph Equalization." Graphic Gems IV. San Diego: Academic Press Professio...

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Question

How to stop parfor from launching a parallel pool automatically?
Whenever MATLAB reaches parfor it will try to start a parallel pool and then run the parfor in parallel. How can I stop parfo...

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Writing my code in Word and exporting to MATLAB
Don't do that. MATLAB has a nice editor. Inside matlab just type edit mycode.m an editor will open and you can ty...

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Edge detection of a nail
reverse your mask (so the big black circle becomes white) then calculate the convex hull of that using (bwconvhull). This gives ...

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how to slid filter window of 3*3 over the pixels of image.
use imfilter() it gives you more option than conv2. For the border pixels instead of using zeros (as in conv2 case) you can d...

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Finding average at each point
vector=rand(1000,1); halfWindow=1; % 1 since you said one below and one above. You can change this s=ones(2*half...

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Save For-loop data to a vector
do this load stormdata.txt S=stormdata; Idx=find( and( S(:,1)>=30 , S(:,2)<=0.5 ) ) Idx would be the list of "...

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How can I find the Difference between the Min and Max of all matching cells over different matrices?
so do this Data(:,:,1)=Month1_Data; Data(:,:,2)=Month2_Data; . . . Data(:,:,12)=Month12_Data; then ...

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Circle-Circle Intersection ,dimension between circles
I don't know what is your D3. So go to the bottom of the code and set D3 to the one that you have. % Area of a circular s...

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Find Column Number in Table
Table variable have property fields you can use that to find the column number like this find(strcmpi(T.Properties.Varia...

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