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how can find angle for symbolic function
The angle is just: ANG = atan(imag(r2s)/real(r2s));

13 years ago | 1

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Index exceeds matrix dimensions
I think you mean this: F = randi(100,3840,15); % Random 3840-by-15 H = randi(100,96,15); % Random 96-by-15; J =...

13 years ago | 1

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Form a matrix from elements of a second matrix
Your question is a little unclear, but I think you can get what you want with logical indexing. idx = Diameter<6; % ...

13 years ago | 0

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Extract a portion of vector
Say this is your vector: A = [3 4;5 6;8 7;9 8;7 5;5 3;3 9;12 4]; And you want all rows from 5 to the end to be nan: ...

13 years ago | 1

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how can i show a numerical output in gui
Give this a try: function guitrial S.voltageH = uicontrol('Style', 'PushButton',... 'Str...

13 years ago | 0

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Answered
How to plot several different points from an equation? (Macaulay's notation)
function [ V ] = Untitled2(x) V = zeros(size(x)); V(x<=.76) = 632.568; V(x>.76 & x<=.99) = -2090.455; Now, from ...

13 years ago | 1

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How to tag output of function which is a vector in a new array/matrix in increasing order?
A{1} = [ 4 3 8 27 10]; A{2} = [4 3 8 27 10]; % etc... Then later you can examine them: A{2} . . ...

13 years ago | 1

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plot vectors from a point to another point
cla quiver(2,3,5,5,0) % Set scale to zero axis tight As I told you in <http://www.mathworks.com/matlabcentral/answer...

13 years ago | 0

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Answered
plot vectors head to tail
I show you two methods. Both have their uses, so I'll let you decide which fits your needs: % Make a vector from (2,3) t...

13 years ago | 4

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initialize a MxN matrix with the same number
Another: % Make a 3-by-8 matrix of 9s: A(1:3,1:8) = 9

13 years ago | 17

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How to "accept" an answer to your question?
Make sure you are logged in. If the question has already been closed you will see "Accepted Answer by ______" to the right of y...

13 years ago | 0

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Write program by For loop, how can I stop
A=[40 47 50 60 70 75 80 80 90 55]; B(1)=70; C(1)=60; for k=1:9; C(k+1)= B(k)+C(k)-A(k); if C(k+1)<0,bre...

13 years ago | 0

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Answered
How can I call "UNIQUE" function in a MEX file?
Read this document, it describes how to call a MATLAB function from a mex file. doc mexCallMATLAB

13 years ago | 2

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How to evaluate calback function in edit text uicontrol?
Please do not program callback using strings. Use function handles instead. Save this in an M-file then run the file to see ho...

13 years ago | 3

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Answered
Keeping plot legend in foreground
I cannot reproduce this with: plot(1:10) legend('plot') line([5 5],[0 10]) So I want to ask what your code looks l...

13 years ago | 0

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evalAt() does not work any way I use it
What do you see when you type these? Do you see the help, or do you see function not found? help evalAt help subs ...

13 years ago | 0

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Fibonacci function displaying issues
If you choose to use recursion, you will have quite some time with this. I think it is better to use iteration, myself. fu...

13 years ago | 0

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Error: Function definitions are not permitted in this context. ???
Where did you put that code? You cannot define a function at the command line or in a script M-file.

13 years ago | 0

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Why am I getting the "Index exceeds matrix dimensions" error when trying to perform triple integral of a function as indicated below? Thanks
You forgot one dot: h=@(x,y,z) cos(x)./sqrt((y.^2.)+(z.^2.)-2.*y.*z.*cos(x));

13 years ago | 0

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SLICE: Hiding the edges of slice
I am not sure if this is what you have in mind: set(h,'edgecolor','none')

13 years ago | 0

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Answered
I need to plot 8 bit long 256 data in two dimension axis
I have no idea how your data is structured. So I will leave that to you and just show how to label the axes. x = 1:10; ...

13 years ago | 0

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Trigonometri Problems at atand and acosd
This is perfect for the FZERO function.... fzero(@(z) 54.8-acosd(20./(100-z))+atand(40./(500-z)),30)

13 years ago | 0

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Answered
Probabilty occurence of a number in long number sequence
X = randi(256,1,300)-1; % Data on [0 255] P = histc(X,0:255)/length(X); % Probabilities. [(0:255).' P(:)] % Show ...

13 years ago | 0

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Answered
How can i do this?
One thing I notice in your code. It looks, by the way you index inside the FOR loop, like your image is 3D. If so, the variabl...

13 years ago | 1

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Answered
Need to map values to 0:1 scale for efficiencies..... Help?!
Why not use: semilogy to plot the efficiencies if they vary by orders of magnitude?

13 years ago | 0

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ismember function too slow
BinA = B(ismember(B,A)); for n=1:length(BinA) do-something with BinA(n) end

13 years ago | 1

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how to craete a matrix with desired elements
Many ways! What do you have in mind exactly? In the most general form: function A = makematrix() % Help user...

13 years ago | 0

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Answered
How to find the median from each of the column with certain condition
Note that using FIND is not necessary.... x = randn(10,10); indices = abs(x)>2; % This is a logical index. x(indic...

13 years ago | 0

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Easy GUI - Multiple Errors
Apparently handles.output is the handle to a figure object. What object were you trying to set the string to? Try thi...

13 years ago | 0

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Time format conversion command
If you have a cell array, I would do this: A = {'36:40.0';'36:40.1';'34:40.3'}; % A cell array B = '${num2str(str2n...

13 years ago | 0