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finding all the packets associated with particular IP address
Man, this is what AWK was built for! But never mind. To do it in MatLab, use regular expressions: packethist = { 1 ...

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How to model temperature distribution over time over a 2 Dimensional laminar with increasing accuracy?
There's a few ways you could do this, and it depends on a number of things about your problem that probably only you know. I ...

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compare two splines
Is the stretching uniform? If so you could handle all that (including rotation) as follows: Sample your splines with a set n...

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Changing subplot axis label using subplot handle
That's because the value for 'XLabel' is actually a handle to another object. To see its properties, do this: get( get(P1,...

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how to scan the first black pixel of top left on image
If your image data is grayscale or indexed (1 value per pixel), you can do this: [y,x] = find( img == 0, 1 ); If it's RG...

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Question about colormap? how to change color from one image?
To detect your yellow, you need to find the relationship between the RGB channels that creates a yellow colour. Now, pure yello...

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GUI question
1. Build your other GUI. 2. Create the button in your main GUI and put code inside its click callback that invokes your new G...

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Randomly accessing a file from a folder using Matlab
I understand your question in two different ways: 1. You want to choose a random file from a specified folder 2. You want ...

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??? Index exceeds matrix dimensions.
The variable |k| is either negative or is larger than the dimensions of one of |a|, |b|, |c|, |d|, or |x|

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Ordering rows based on value
Try this: matches = [1,2;1,4;2,5;3,4;3,6;5,6;]; connected = matches(1); while size(matches,1) > 0 [r...

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Writing a matlab program to create a matrice column by column?
You need to be a little clearer... Do you mean this? A = [ 1 2 3 4 1 2 3 4 1 2 3 4 ]; Or this? ...

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Grouping different time series on the same timescale
This is not very efficient, but is easy if you are in a hurry. Y = 1900:2012; % reference years V = nan( nu...

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EDIT:(Getting a Different Error Now: " Index exceeds matrix dimensions".) >>User Inputed Word--> Yields a corresponding number.
Nah... Try this: colors = {'Blue', 'Red', 'Pink', 'Black', 'White'}; values = [12 20 2 15 12]; You can search for th...

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How can I identify a pattern of occurrences over multiple days?
Well, what you could say is that a value is in the required set if you subtract the date 4 events ago from the date at the curre...

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Max / Min of sparse matrices
Here is a solution for rows (similar for columns)... If you know that every row contains at least one non-zero value, you can...

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How to normalize two images which have different lighting conditions?
Histogram normalisation can work quite well in some cases. First, you take a histogram of your reference image (where each bu...

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how to make a video (captured from a camera) fullscreen.
I really would recommend that you add two black lines above and below the images to pad it out to 900 pixels. Is this what you ...

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my output is not simplified to one number
Looks like you want: A .* sin(exp(B) - 2) ./ C; Where: A = [3931879, -1862469, 45497457, -18734247, ...]; B = [1...

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Max/Min of nonzero rows/cols
When you say 'for every row and column', do you mean a single max and min for the entire matrix? This would do it: nzmin =...

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can we use assembly code in matlab
You should probably try writing a MEX function in C, and embed your assembly code in there, or compile separately and link to a ...

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helicopter motion game* using matlab
If your labs have had you moving a rectangle with the mouse, and if this same style of interface is required to move your helico...

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Multi mice tracking
Is this actually a MatLab question?? Have a look at this project: <http://cpnmouse.sourceforge.net/>

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???error: Assignment has more non-singleton rhs dimensions than non-singleton subscripts.
I think you have a slight misconception about how to initialise your data sets. Start with this: data(x,y,6)=zeros(1,1,1);...

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how to compare two image which should neglect the lighting changes
Try using a threshold. Set a minimum amount of change to denote movement. Anything less than that value is noise. Lip movemen...

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How to control number of threads in FFT ?
Don't know if this is any help, but: maxNumCompThreads will be removed in a future release. Please remove any instanc...

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Subscripted assignment dimension mismatch
When you reference |BW(:)|, it turns your matrix into a vector. Just do this: IM_s(:,:,i) = BW; Assuming that |IM_s(:,:...

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Optimizing a 'for' loop
It really takes half an hour??? What hardware are you using? Anyway, the biggest improvement on this code is to stop calcula...

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create variable from function input
This makes no sense. If you want your input variables to be called something else, then call them something else in the first p...

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'Restart program if error encountered'
Sorry, but I'm gonna be your Mum here! The usual approach is not for your program to die horribly and have to be restarted, but...

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