質問

How to identify a user?
I have a body of code that is being used & abused by some of my users. I would like to be able to find out who has been using th...

約13年前 | 2 件の回答 | 1

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How do I find the index of a value in an array that lies between two values in another array?
for i = 1:numel(a)-1 c = b > a(i) & b < a(i+1); c = b(c); if isempty(c) continue else % do something, sin...

約13年前 | 0

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test for equality not working 8.0.0.783 (R2012b)
Actually, for the test of equality, you should check for exact equality, and you should control the tolerance you are willing to...

約13年前 | 1

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how to generate a uniform distribution with an constraint
Rearrange the function into the form: c2 = g(c1,constant), Randomly generate c1, and simply calculate c2, based on the co...

約13年前 | 0

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Help me to draw graphic for vector xyz :)
t = 0:0.01:10 x = 5*t.^2; y = -2*t; z = 2; plot3(x,y,z) Make sure you get x, y and z correct ;)

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[Computer Vision] Size of colored Object detected with my algorithm
have a look at regionprops.

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Entropy of subsections of an image
Try E = entropyfilt(im,ones(3,3)); ime = E < threshold;

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What is this code doing exactly?
looks like its opening some pairs of files and overlaying some parts of the second image on the first, and saving the result.

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Generating a pdf file using Matlab
Put your script into cells. In each cell add a line to print to screen/output a plot. (disp, plot, etc.) - No need for fopen etc...

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Mean value of data with irregular intervals
Why not just take a weighted mean? This method ignores y(1) - you could change it to ignore y(end), or add info and inclue it...

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How to change seconds since 1st January 1985 to YYYY-MM-DD-HR-M-S format?
seconds_since_1985 = 981364894; % days_since_1985 = seconds_since_1985 / 86400; datestr(days_since_1985 + datenum('1/1/198...

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How to Increase the Refresh Rate of a Continuously Updating Plot
Try adding a "drawnow" statement after your plotting command.

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Plotting in semi-realtime
pause(delay_time) That's likely what you're looking for.

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ln not recognised as a command
You can fix it by putting: ln = @(x)(log(x)); at the start of your code... or replace ln with "log"

約13年前 | 0

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summing up array element
for i = 1:numel(p) c(i) = sum(p(1:i)); end Or so_far = 0; for i = 1:numel(p) so_far = so_far + p(i); c(i)...

約13年前 | 0

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Error using: Out of memory
Hello, "Out of memory" errors typically occur because your code is trying to store a single large array, and it will not fit ...

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How to slipt an image into equal & non-overlapping 2*2 matrixes in matlab?
For a 128 by 128... for i = 1:2:127 for j = 1:2:127 split_2x2(:,:,(i+1)/2,(j+1)/2) = image(i+[0 1],j+[0 1]); end ...

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Errors trying to save data to an excel file
{'Mean','Max','Min','Std','Median';average;maximum;minimum;stde;med}; tries to make a table like the following: Mean, Ma...

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Building matrix using vectors?Easy question.
Depending what you have: 1) matrix = [row_vector1;row_vector2; ... row_vectorn]; 2) matrix = [col_vector1, col_vector2, .....

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How to use Bitxor for Double Numbers
typecast(bitxor(typecast(0.3243,'uint64'),typecast(0.12325,'uint64')),'double')

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The Watershed Transform::separate objects::please help
Should BW be bw?

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How to plot more figures
after plotting the first time issue any one of these three cmmands: figure hold on hold all Your loop also should be ...

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How do I ensure that the fields within handles stay available throughout GUI Callbacks?
Well, not to be too obvious, but "handles.geo_utitable1" looks like a typo...

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how to rearrange the code in simple way
input = reshape(q(1:10,1:419)',1,[]); output = zeros(10,419);

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Draw a line between two points
This is the raw maths... point1 = [x1 y1]; point2 = [x2 y2]; point3 = [x3 y3]; m = (y2 - y1) / (x2 - x1); c = y2 -...

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Newbie: The variable (k) of the for loop inside a while
At the start/end of each for loop, the loop variable is reset to the next value. for i = 1:5 disp(i) i = i + 1; dis...

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How to create dummy variable?
Use the mean of the two "surrounding" points A(75,4) = A(74,4) + A(76,4); Fit a curve to the known points, and then evalu...

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How to identify and characterize flaky particles in microscope image
doc regionprops - This will tell you how to handle the simple cases (spatially separated flakes) For the harder ones, with in...

約13年前 | 1

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how to load rest of data
load(....,'percentiles') stored_percentiles{j} = percentiles;

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How can I import bin file?
You've opened the file for write access. fid = fopen('vpt.bin','r'); You either need to be sure that "vpt.bin" is in mat...

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