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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 ...

約14年前 | 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...

約14年前 | 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...

約14年前 | 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 ...

約14年前 | 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...

約14年前 | 0

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

約14年前 | 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...

約14年前 | 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...?

約14年前 | 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(...

約14年前 | 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...

約14年前 | 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 = ...

約14年前 | 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...

約14年前 | 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...

約14年前 | 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...

約14年前 | 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...

約14年前 | 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(...

約14年前 | 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

約14年前 | 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...

約14年前 | 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

約14年前 | 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')...

約14年前 | 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 = ...

約14年前 | 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); ...

約14年前 | 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...

約14年前 | 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...

約14年前 | 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 ...

約14年前 | 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...

約14年前 | 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

約14年前 | 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...

約14年前 | 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 ...

約14年前 | 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...

約14年前 | 0