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Craig Cowled
Queensland University of Technology
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importfile regexp thousands separator returns NaN when negative
I used "Import Data" to generate a function importfile for importing a csv file. Unfortunately, the function returns NaN for ev...
대략 5년 전 | 답변 수: 1 | 0
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Is it possible to make a manual Nyquist plot using polar(theta,rho)
Jeffrey, I usually keep my data in one complex vector rather than having two vectors (i.e., mag & phase). Then it's a simple th...
Is it possible to make a manual Nyquist plot using polar(theta,rho)
Jeffrey, I usually keep my data in one complex vector rather than having two vectors (i.e., mag & phase). Then it's a simple th...
대략 11년 전 | 0
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how to pass multiple values of x to objective function in GA / Patternsearch
I'm looking for ways to speed up the computation of my optimisation process. I've already used the PROFILE command to pinpoint ...
대략 11년 전 | 답변 수: 1 | 0
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Genetic Algorithm options 'PopInitRange' not working
Alan, thank you for such a good explanation. Cleared it up for me nicely.
Genetic Algorithm options 'PopInitRange' not working
Alan, thank you for such a good explanation. Cleared it up for me nicely.
대략 11년 전 | 0
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Genetic Algorithm options 'PopInitRange' not working
I am using GAOPTIMSET to establish an upper and lower bound for my initial population in a GA optimisation. I have abbreviate...
대략 11년 전 | 답변 수: 2 | 0
2
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How do you share a variable from another function to be used in a different function?
Cordelle, I'm not going to re-write your code for you, but I will suggest that you read up on nested functions, here ... ht...
How do you share a variable from another function to be used in a different function?
Cordelle, I'm not going to re-write your code for you, but I will suggest that you read up on nested functions, here ... ht...
대략 11년 전 | 0
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Restarting Genetic Algorithm after Crash
Many thanks yet again, Alan. Will write a little function to handle the crash and restart the GA. As for patternsearch, I mi...
Restarting Genetic Algorithm after Crash
Many thanks yet again, Alan. Will write a little function to handle the crash and restart the GA. As for patternsearch, I mi...
대략 11년 전 | 0
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Restarting Genetic Algorithm after Crash
I'm using the GA to update my Finite Element Model. The fitness function I am using is computationally expensive and takes 4sec...
대략 11년 전 | 답변 수: 2 | 0
2
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Use of PSD functions to obtain FRFs
I thought I should tie up a loose end with this question. I discovered that the data acquisition from my impact hammer was faul...
Use of PSD functions to obtain FRFs
I thought I should tie up a loose end with this question. I discovered that the data acquisition from my impact hammer was faul...
11년 초과 전 | 1
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Curve fitting a complex function using cftool
MattJ, not sceptical ... always worthwhile to know the intrinsic quirks of an algorithm. I used your code and compared the di...
Curve fitting a complex function using cftool
MattJ, not sceptical ... always worthwhile to know the intrinsic quirks of an algorithm. I used your code and compared the di...
11년 초과 전 | 0
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Curve fitting problem and strange message
Fei, if the "change in residuals is less than tolerance" then this is an indication that you have a reasonably good fit. I ha...
Curve fitting problem and strange message
Fei, if the "change in residuals is less than tolerance" then this is an indication that you have a reasonably good fit. I ha...
11년 초과 전 | 0
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genetic algorithm error not enough input arguments
Hey, what do you know, it worked!! Btw, your recommendation of using LSQNONLIN was the right call too. Although the GA wor...
genetic algorithm error not enough input arguments
Hey, what do you know, it worked!! Btw, your recommendation of using LSQNONLIN was the right call too. Although the GA wor...
11년 초과 전 | 0
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genetic algorithm error not enough input arguments
Alan, Thank you for taking the time to answer this in so much detail! Point taken regarding the choice of optimization too...
genetic algorithm error not enough input arguments
Alan, Thank you for taking the time to answer this in so much detail! Point taken regarding the choice of optimization too...
11년 초과 전 | 0
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genetic algorithm error not enough input arguments
function deltaH = curvefit_H_2modes(w1,w2,m1,m2,c1,c2) load('file.mat'); z = -(x.^2) .* ((1 ./ ((w1.^2 * m1) -...
11년 초과 전 | 답변 수: 4 | 0
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How to Fix this Error!
Send this to Matlab Support. Obviously their help file has the wrong code.
How to Fix this Error!
Send this to Matlab Support. Obviously their help file has the wrong code.
11년 초과 전 | 0
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RMS question plss help me
Mohd, if you have the Signal Processing Toolbox, you can use the _rms_ function like this: X = [0.234 0.2338 0.255 3.456 5....
RMS question plss help me
Mohd, if you have the Signal Processing Toolbox, you can use the _rms_ function like this: X = [0.234 0.2338 0.255 3.456 5....
11년 초과 전 | 0
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Curve fitting a complex function using cftool
I just noticed another question on the forum in which someone suggested to use _mldivide_. I'll have a look at this when I get ...
Curve fitting a complex function using cftool
I just noticed another question on the forum in which someone suggested to use _mldivide_. I'll have a look at this when I get ...
11년 초과 전 | 0
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how to acces and change value inside transfer function inside a loop
Kobi, I tried running your code and got an error message. It looks like you missed a space between G.den{1,1} and (k) in the li...
how to acces and change value inside transfer function inside a loop
Kobi, I tried running your code and got an error message. It looks like you missed a space between G.den{1,1} and (k) in the li...
11년 초과 전 | 0
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pseudorandomise vectors in an array
Doug, I use a function that was developed by Jos, called _allcomb_. You can find it at the following link <http://www.mathworks...
pseudorandomise vectors in an array
Doug, I use a function that was developed by Jos, called _allcomb_. You can find it at the following link <http://www.mathworks...
11년 초과 전 | 0
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How can I generate random numbers with constraints?
I think you have actually answered your own question. If x = randi([3 18], 7); gives you a 7 x 7 matrix of random numbers betwe...
How can I generate random numbers with constraints?
I think you have actually answered your own question. If x = randi([3 18], 7); gives you a 7 x 7 matrix of random numbers betwe...
11년 초과 전 | 0
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bar3 width depend on zdata?
Ok, so I know how to make the colours on my bar graph depend on zdata .. h = bar3(data); for ii = 1:length(h) zdata =...
11년 초과 전 | 답변 수: 0 | 0
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Boxplot with time on x axis
Found the answer ... Need to use 'positions' like this boxplot(Y,'positions',X)
Boxplot with time on x axis
Found the answer ... Need to use 'positions' like this boxplot(Y,'positions',X)
11년 초과 전 | 4
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Excel Date Format to Matlab Number Array
Have you tried using datevec? Take one of the cells as an example ... '02/03/2013'. >> datevec('02/03/2013','mm/dd/yyyy')...
Excel Date Format to Matlab Number Array
Have you tried using datevec? Take one of the cells as an example ... '02/03/2013'. >> datevec('02/03/2013','mm/dd/yyyy')...
11년 초과 전 | 0
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Boxplot with time on x axis
Does anybody know how to obtain a boxplot with time on the x axis? I have collected experimental observations at irregular in...
11년 초과 전 | 답변 수: 1 | 1
1
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Curve fitting a complex function using cftool
I'm using the cftool toolbox to find fits for a complex valued transfer function. The toolbox clearly can't handle a complex nu...
11년 초과 전 | 답변 수: 3 | 0
3
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Use of PSD functions to obtain FRFs
Hi, I am doing some modal analysis on a steel structure and have encountered some troubling issues while using Matlab's Power...
12년 초과 전 | 답변 수: 2 | 1