Stephen

University of Florida

Last seen: 11 mois il y a | Actif depuis 2012

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

11 mois il y a

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

11 mois il y a

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Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

environ 11 ans il y a

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Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

environ 11 ans il y a

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Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

environ 11 ans il y a

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Is my wife right? Now with even more wrong husband
Again, as in "Is my wife right?" ( <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right> ), answer 'yes' r...

environ 11 ans il y a

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Steepness of a Histogram
if he had an exponential distribution vs. a normal, there's different 'steepness' in each one depending on what you examine, but...

plus de 12 ans il y a | 0

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Plotting data labels with the mapping toolbox
could you just refresh the original background image and only plot the updated city info? Completely erase the pre-existing map,...

plus de 12 ans il y a | 0

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Want to create a 3d graph of chi^2 for a 2d data set /w 3 parameters
it looks like X and Y are not a single value, but the result of meshgrid, and when you perform the .* operations with the 1001 e...

plus de 12 ans il y a | 0

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Creating an infinite loop until an event occurs?
go = true; while go step1 step2 step3 if step3==stopcriteria go=false end ...

plus de 12 ans il y a | 1

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image deblurring or noise removal
try doing the same process to a matrix of ones and using ./ to get rid of the vignetting effect. Probably, whatever you're doing...

plus de 12 ans il y a | 0

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Making multiple matrices at once?
make a structured variable for t=1:n^2 V(t).matrix=zeros(n); end Call them by V(t).matrix and get spec...

plus de 12 ans il y a | 0

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plots - graphics quality poor
save them as jpegs or something... you can make lines thicker with the set() command and change the default font and stuff. b...

plus de 12 ans il y a | 0

Question

soundsc
So, I noticed that you can't cntr + c out of the sound playback from soundsc. Is there a way to kill the horrible noises I'm mak...

plus de 12 ans il y a | 1 réponse | 0

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Dynamic color for a plot
if you want to change a bunch of stuff with plot, you could do it like this: mark=['^';'s','o','.','x'] for t=1:5 h...

plus de 12 ans il y a | 0

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Unknown Error
if the function usually outputs 1 thing and you ask for more, it will give you that error. for example, function ans = myfu...

plus de 12 ans il y a | 0

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gaussian and rayleigh distribution MRI Late Enhancement
[c1, c2] = hist(I(:), 50); f=fit(c2', c1', 'gauss1'); or for the rayleigh, you'd have to specify it in fittype where 'g...

plus de 12 ans il y a | 0

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Video capture
that's not really a matlab question, but why can't you just save video to your camera's storage device and import it later throu...

plus de 12 ans il y a | 0

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bwlabel changing connectivity of image
I agree with Image Analyst. Is your image a jpg or has it been compressed? If so, there are little ghosts that lurk as low inten...

plus de 12 ans il y a | 1

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storing data from function
So, you have: function something [sound, freq] = wavread(file); end ? If so, you need to output those valu...

plus de 12 ans il y a | 0

Question

just a question
let's say i have the image: img = [1 0 -1; 0 -1 0; 1 1 -1]; and I'd like to get the values on the 8-connected...

plus de 12 ans il y a | 1 réponse | 0

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Detect a human figure in a live video
if the camera is static, take a blank image and subtract it from the live feed to get a rough idea of what pixel values have cha...

plus de 12 ans il y a | 2

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composite function
plot(C,A) you can plot anything against anything else. If A and C correspond to the same values of B then the above code sh...

plus de 12 ans il y a | 0

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colorbar: cdata and colors
imagesc automatically scales your image to 'fit' to the colorbar. It can be a huge pain sometimes. If you can get away with it, ...

plus de 12 ans il y a | 0

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manual segmentation of image
imfreehand methods imfreehand

plus de 12 ans il y a | 0

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how to select certain shape from different images?
haha, Walter :) You can use the rucklidge algorithm. It relies on the haussdorf distance of a set of points, say the 10 point...

plus de 12 ans il y a | 0

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Re-Asking a Question: Creating a Connection Matrix from an indexed point set
after looking at it for a while I think I understand. let me use N=3 to try and restate what you've asked... from points, ...

plus de 12 ans il y a | 0

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How to save/access an axes's properties using the handles structure?
I used to know how to answer this better, and maybe a bit of reading will answer based on my advice. In each function of the GUI...

plus de 12 ans il y a | 0

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determine the angle of image
show the image somehow and use: pos = ginput(3); it will give you the option to chose three points on your image. click ...

plus de 12 ans il y a | 0

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converting a image
im2col(a,[64 64],'distinct') will give you your blocks as columns that you just need to reshape into squares again. I can't h...

plus de 12 ans il y a | 0

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Stephen

University of Florida

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