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Error in loading a very large matlab file
Hi Christina, does this .mat file contains several variables or one large matrix? In the latter case, I guess, you will have ...

más de 13 años hace | 2

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How to run an m-file in MATLAB from Visual Studio in C code
Hi Vlad, the command engEvalString evaluates a string in the engine. This string may simply be the name of a function or scri...

más de 13 años hace | 1

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Is there any way to selectively remove lines from a plot?
Hi, the easiest way is to store the handles you plot, e.g. hPlot = zeros(100, 1); for i=1:100 hPlot(i) = plot(so...

más de 13 años hace | 1

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How to look up corresponding 2D matrix from a table of 8 columns?
Hi, in this case probably this is easiest done by hand: columns = 0:5:35; thick = 7; % find the 2 indices where 7 ...

más de 13 años hace | 0

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How can I plot 3D graph provided that I have x,y,z value
Hi, if the data points x,y are irregular (i.e., not on some grid), just use plot3 to plot them. For functions like mesh and s...

más de 13 años hace | 0

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array of objects
Hi, something like this? classdef someClass properties name value end methods ...

más de 13 años hace | 3

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1/X & X^-1 are they the same?
Hi Raymond, if it's scalars take Walter's advice on ./ and .^ (should be no measurable difference between those). If X is a m...

más de 13 años hace | 0

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how to generate c code without using tool through embedded coder.
You want to generate code without code generation tools? I guess this is equivalent to writing the code by hand...?

más de 13 años hace | 0

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fmincon and constrains
Hi, if you know that x(1)=a why don't you take x(1) out of the optimization problem? But if you want to keep it, just let lb(...

más de 13 años hace | 0

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Matlab mex memory handling - same input different result
Hi, looking on the code I don't see a reason why consecutive calls don't give the same answer. So it looks as if the answer t...

más de 13 años hace | 0

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Turning numbers into letters based on alphabetical order
Hi Brendan, something like this: n = 7; char('A'+(n-1)) What I forgot: you might also think about taking n1 = ...

más de 13 años hace | 1

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Using NET assembly from within MATLAB
Hi, I'm not sure, but as a first simple test to rule this out, try to send a 1D array: you are sending a 2D array to a 1D (Sy...

más de 13 años hace | 0

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Sort matrix A from least to greatest and have corresponding entries in matrix B move to equal positions
Hi, there are two ways: either combine them into one matrix and use sortrows, the other is to sort A and call sort with two o...

más de 13 años hace | 0

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Same functionality as Excel Solver to set objective to a value
Hi Peter, to optimize a variable to be of value XTarget, you need to minimize the function abs(x - XTarget) If you do...

más de 13 años hace | 0

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How can I sort(delete) contents in listbox?
Hi Haksun, in your pushbutton5_Callback you need to define newList, e.g. newList = get(handles.listbox1, 'string'); b...

más de 13 años hace | 0

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Using string saved variables for calculations
Hi, generally speaking you can do the same as before: TotalZ = 0; for v=1:18 TotalZ = TotalZ + eval(['Z_' num2str(...

más de 13 años hace | 0

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repeat a matrix as digonal element in a new matrix?
Hi, I usually use blkdiag: A = rand(2,3); ACell = repmat({A}, 1, 10); BigA = blkdiag(ACell{:}); Titus

casi 14 años hace | 9

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Out of memory issue in Matlab 7.6 (R2008a)
Hi, this is my guess (!): the values in B have an influence on the stiffness of the system. Does the ode45 makes very small t...

casi 14 años hace | 0

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How to save a double number to integer to a .txt file?
Hi Susan, you don't have to convert to int. Just round and use save with "-ascii". Titus

casi 14 años hace | 0

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Binary to Signed decimal in MATLAB
Hi, then I guess the other way round should do the trick as well: typecast(uint16(bin2dec('1000000000000000')), 'int16')...

casi 14 años hace | 0

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Matlab compiled dll from m-file not linking in c/c++ application
Hi, just a comment regarding point 1): entering the following in R2011b to confirm: [x,y]=mcrversion x = 7 y = ...

casi 14 años hace | 0

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fmincon function ( constrained nonlinear multi-variable optimization)
Hi Hadi, you will need to compute them again in the mycon function, i.e., function [c,ceq]=mycon(x) c1 = fourier(x); ...

casi 14 años hace | 0

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Question of mean
Hi, 0.86 is not exactly representable in computers double precision representation: fprintf('%.20f\n', 0.86) 0.85999999...

casi 14 años hace | 0

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Call a MEX function from Simulink
Hi Martijn, for the xPC Target you will need to have the source code of IPOPT solver available. You can write your S-function...

casi 14 años hace | 0

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Issue with mean function
You will need to do exactly what you are describing: taking for each element the mean of the surrounding elements. What you did ...

casi 14 años hace | 0

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least square method
Hi Tiara, "fit" may be next to everything. If it is a linear fit, just use polyfit, same of course for polynomial fit. Everyt...

casi 14 años hace | 0

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Input argument "ke" is undefined.
Hi Rita, did you put in your S-function block three parameters to be passed as ke, kec and ku? Titus

casi 14 años hace | 0

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Old class definitions in MATLAB2012
Hi Philipp, what do you mean by "easily browse"? Do you mean taking a look at the properties? You might convert to a struc...

casi 14 años hace | 0

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nonlcon in fmincon not satisfying my constraints :( getting crazy.
Hi, fmincon will try to satisfy the relation c<0. To this end you need to compute c, but you give the relation. So: you need ...

casi 14 años hace | 1

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How to make a small change to a big text file efficiently
Hi, if it is the same length, I would suggest to use memmapfile: open the file using memmapfile. Use e.g. strfind to find whe...

casi 14 años hace | 0