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How to Create array with repeating values of another array
Hi David, use repmat and linear indexing: x = [1 2 3 4 5]; % repeat two times: xx = repmat(x, 2, 1); % and access all...

9 years 前 | 0

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how to define a while statement that when the variable equals a numerical value, ends the code?
Hi, I understand the "get's value" is meant as "being not empty" ...? A = []; while isempty(A) % do something, ...

9 years 前 | 0

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Plotting selective Excel Data in Matlab
Hi, I'm not sure where the problem with the title is, because calling title(filename(1:end-4)) should work. Regar...

9 years 前 | 0

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Signal generation using for loop
Hi, what about this: x = [-2 -2 -1 -1 0 0 1 1 2]; y = [ 0 -1 0 1 1 2 2 1 0]; plot(x,y) Titus

9 years 前 | 0

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Using Derivates in simulink
Hi Henry, the derivative block is doing what its name says, namely estimating the derivative of the input signal. I don't und...

9 years 前 | 0

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Additional (configuration) Files in compiled standalone application
Hi, I would suggest the following: * Add the .xlsx to the compiled app * When the application starts and wants to read th...

9 years 前 | 0

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how to plot the time series data with dates showing in x axis
Hi Jessie, you need to set those properties as you want them to be before calling datetick: t = datenum(1990, 1, 1):25:d...

9 years 前 | 1

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'...must return a column vector' errors when using ODE45
Keelan, I think there is a conceptual misunderstanding of what your myfun should do: it looks as if your 300 is related to 30...

9 years 前 | 0

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what is fixed-point in a simulink model and how to do it?
Hi, fixed point means not using the usual double precision variables but using integers (with a scaling and bias). A simple e...

9 years 前 | 0

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已回答
Convert string to a cell, array or matrix
Hi Alfonso, first of all, you might consider using the variable "NUM", since it already contains the numbers as double variab...

9 years 前 | 0

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已回答
Convert string to a cell, array or matrix
What about this one: doc str2num Titus

9 years 前 | 0

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How to load data from other directory?
Hi, you simply need to remove the / at the beginning: dir ..\temp dir ..\..\anotherFolder\anotherSubfolder Note: r...

9 years 前 | 1

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How to import data from external file to Matlab when a format repeats N times inside the file?
Hi, you can use textscan for this task: % open the file fid = fopen('yourfile.txt', 'rt'); % read the first head...

9 years 前 | 1

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已回答
Different results in different computers when using the function "eig" to obtain eigenvectors of a matrix
Hi Zhe, keep in mind, that eig quite often sorts the eigenvalues but it does not promise to do so. So having a different orde...

9 years 前 | 0

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Confused about Static class methods versus normal functions, and their speed
Hi Jeroen, here the MATLAB version used really make a difference: the new engine in R2015b performs much better. On my machin...

9 years 前 | 1

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matlab engine giving wrong result when called in a function in Cpp file
Hi, first of all, your memcpy copies just 4 or 8 bytes but not the array: memcpy((void *)mxGetPr(T), (void *)double_arra...

9 years 前 | 0

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Parallel computing on a cluster
Hi Nicola, first of all you will need to make sure you really use the cluster (and not your local machine). When you click on...

9 years 前 | 0

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R2015b: Multiple sessions
Hi Kent, yes, that should still be possible. Has your license type changed? E.g. from an individual user license to a concurr...

9 years 前 | 0

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why eigenvalue of 3x3 matrix is showing complex value when its a22 element was changed from 180 to 179.99?
Hi, as Torsten commented, the eigenvalues are the roots of the characteristic polynomial. If you have e.g. a quadratic polyno...

9 years 前 | 0

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How to apply/check changes in a Simulink Mask via callback?
Hi Bjoern, when the user presses enter after editing the field, the MaskCallback is executed. This is the callback in which y...

9 years 前 | 0

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How can an object array be extented by itself?
Hi, interesting observation. I would explain as follows: the handle property means, that we use references to objects instead...

9 years 前 | 0

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Does tic,toc influence the performance of a simulink model?
Hi Martin, no, tic/toc has no influence on performance. Titus

9 years 前 | 0

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Save and restore state for a deployed application
Hi, your app can load and save data when deployed. It's only that there is no current folder, or the current folder may be so...

9 years 前 | 1

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What does this error mean?
Hi, this means, that using eye(4) is not valid for indexing (which is true, since it contains zeros). This implies, that you ...

9 years 前 | 0

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how can i replce numbers at the end of rows and coloumns in same metrix?
Hi, replacing is a question of indexing. Try A(3:4, 3:4) and you should see a 2x2 Matrix. Replace this by any other 2...

9 years 前 | 0

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Error usind cd and fullfile
Hi, since Foldernames is a cell array you need to use {} for access to elements. Replace cd(fullfile('E:\Dropbox (LMD)\N...

9 years 前 | 0

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已回答
how do i use mex compiler?
Hi, the error message tells you the problem: the setup of the Microsoft SDK was either not done or not successful. Titus

9 years 前 | 0

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How can I use strcmp (or something else) to compare to multiple strings at once?
Hi, apart from Walter's method there are two additional: # Use regexp (unfortunately here I can't help, I've never really ...

9 years 前 | 1

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已回答
How is it possible that a fitobject can used as an input for the plot function?
That's because the fit object has a method called plot: x = fit([1 2 3]', [4 5 6.5]', 'linear') x = Linear interpol...

9 years 前 | 0

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Why won't my code run? Matlab just says its busy when i run it?
Hi, I did not try the code, but I would strongly recommend to have some limit on the number of iterations, something like ...

9 years 前 | 1