Answered
Mann-Whitney-Wilcoxon test for matrices
Try this: <http://www.mathworks.com/matlabcentral/fileexchange/25830>

16 years ago | 0

Answered
solving nonlinear system of equations
Numerical solutions of nonlinear equations are often sensitive to the initial guess. You may not even be able to determine *how ...

16 years ago | 1

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Answered
Strange result of symbolically solving cubic equation?
I don't know why this is happening. I tried the same equations in Maple and got the right answer both ways, so maybe it is a bug...

16 years ago | 0

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Chroma Keyer
The inputs to scatter3 need to be vectors, not matrices. Try this: scatter3(r(:),g(:),b(:))

16 years ago | 0

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Answered
count nonblank values
By blank, do you mean blank characters in a string S? If so, you could do this to count the nonblank characters: num_nonblank...

16 years ago | 1

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Answered
Selecting words in MATLAB
If your goal is to search for a given string in a cell array, you can use *strcmp*.

16 years ago | 1

Question


Compensated summation in sum?
Does Matlab use some algorithm such as compensated summation to reduce the roundoff error in *sum*?

16 years ago | 1 answer | 2

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answer

Answered
Can I loop on a specific element in an array?
I assume that by "cell" you mean "component of a vector". There are a lot of ways to do this, but one option would be conduct...

16 years ago | 1

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How do I solve and plot a system of differential equations?
To solve the differential equation, you could use *ode45* or one of the other differential equation solvers (if you type "doc od...

16 years ago | 0

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How do I tell which toolboxes my program uses?
You could do a dependency report for each folder that your code is in (from the menu in the Current Folder window). The toolboxe...

16 years ago | 3

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Help with Mixed-Integer Linear Programming (MILP) problem
You could try this out: <http://www.mathworks.com/matlabcentral/fileexchange/6990-mixed-integer-lp>

16 years ago | 0

Answered
data space
The data space is a box determined by the upper and lower bounds in each dimension. In your example, it is defined by 60780...

16 years ago | 0

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Answered
Checking file names
exist('data.xls','file')

16 years ago | 0

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How to get more significant figures in Optimization solutions
I don't know how to change the display, but you could export the result using File > Export to Workspace and look at it with for...

16 years ago | 0

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Answered
inverse 2d continous wavelet
You could try this package: <http://rhea.tele.ucl.ac.be/yawtb/>

16 years ago | 0

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Where can find a tutorial/help for nntool?
Gil, try this link: <http://www.edaboard.com/thread108850.html>

16 years ago | 0

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Code for Maximum Intensity Projection
Yes: <http://www.mathworks.com/matlabcentral/fileexchange/21993-viewer3d>

16 years ago | 0

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Meshgrid
I assume that x and y have the same values as x1 and y1, but in a different order. You could do a search for each pair (x1,y1), ...

16 years ago | 1

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Answered
Complex to Imaginary & Vice -Versa
You can't reverse the abs function. If the original phase is what you need, you could save the phase angle using P = angle(Y). T...

16 years ago | 0

Answered
Using a loop to create polyfit values for a matrix of numbers
You need to index Usable_Freq also, and polyfit returns two values for a first order fit. Try this: N = 11182; x = zeros(N,2)...

16 years ago | 0

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Answered
Cumulative Contribution Contour Plot
Oscar, the real issue here is how to define the cdf for your function. Once you can calculate it, you can do a contour plot of i...

16 years ago | 0

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How can I deal with a badly conditionned matrix when computing strain energy?
The specifics about strain are beside the point - it is a rounding problem. Take any badly-conditioned matrix and some complex v...

16 years ago | 0

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Can I apply Linesmoothing 'on' to existing figure?
If you can get the handle for each object, you can enter: >> set(handle,'Linesmoothing','on') even thought get(handle) doesn...

16 years ago | 1

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Answered
lsqlin Failure! Why is the simple example provided by MATLAB failing to execute?
I tried the example and it gave the warning but the outputs x, etc., were the same as in the example. "Optimization terminated" ...

16 years ago | 1

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Answered
How do I draw an en dash in MATLAB using the TeX interpreter?
If you use the latex interpreter, it's really simple: plot(1:10); h1 = text(2,2,'Hy-phen','Interpreter','latex'); h1 = t...

16 years ago | 3

Answered
Cumulative Contribution Contour Plot
You seem to be trying to plot the multivariate normal cumulative distribution function. For that, just change mvnpdf to mvncdf. ...

16 years ago | 1

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How can I edit cells with string values in a UITABLE?
The NaN may occur because the format for that column is numeric. That could be because you entered a numeric value for the prope...

16 years ago | 0