Walter Roberson

Last seen: Today | Active since 2011

Followers: 54 Following: 0

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I am currently in the middle of moving, so I am not around very much.

Programming Languages:
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English

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Hello, It's pudding!! I'm new with Matlab and i'm using old version 2011a!!
for i=1:length(D) plot(freq_nat(i),zeta(i)); You are plotting a scalar against a scalar in each iteration. By default, plot()...

15 hours ago | 0

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I need to find the minimum value and the locations of all occurrences.
fprintf('The location of the minimum value is row %3.0f column %3.0f \n', row, column); When you do this in fprintf(), all of ...

15 hours ago | 2

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How to use all CPU cores
Each pair of "logical" cores shares physical core resources. "Logical" cores have their own set of registers, but only one set o...

1 day ago | 1

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Why are these zeros adding themselves to the array?
function result = expn(x,n) result = 1; for i = 1:n result = (result + x.^i/factorial(i)); end end x...

3 days ago | 1

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Hi I am using matlab 2023a license manager and i just want to know if the license file version is 2024b can it will work on the 2023a license manager
No, R2024b needs a license manager update.

3 days ago | 0

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Are there any faster alternatives to readlines?
For the purposes of the below test, I will assume that it is important that the text be split into lines, but that it is not imp...

3 days ago | 1

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Error message in the console when using batch
fetchOutputs() in a try/catch environment. It will succeed if there was no error, and will throw an error if there was an error ...

3 days ago | 0

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dividing coastline into equal interval
See John D'Errico's File Exchange contribution interparc https://www.mathworks.com/matlabcentral/fileexchange/34874-interparc wh...

3 days ago | 0

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Varying Marker Color by Variable with plotm
You should probably be using scatterm instead of plotm . You are using 'ko' line specification, so you are not joining points ...

3 days ago | 0

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How can I use a Simulink.Signal Object as a parameter in a masked subsystem in R2022b?
Initial conditions are time-less (no time information associated.) Simulink.Signal objects have attached time. These two thing...

3 days ago | 0

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MinGW installation for Matlab R2019a
You were trying to install MinGW for R2019a during a time when R2019a was only available in pre-release (Stream "a" releases of ...

3 days ago | 0

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How to change the volume dimensions in niftiread.
niftiread just returns an array of data, without any particular size of voxels. You would have to use niftiinfo to fetch informa...

3 days ago | 0

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Need to find a specific point on a line using data from a 2 column matrix
Your y data has multiple different x values for most y values. Interpolating using y as the independent variable and x as the de...

4 days ago | 0

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Error in multolying a number and function handle
tanfi=@(x) tand(x(1)); Up to this point, you are creating function handles -- pieces of code that do not take action directly, ...

4 days ago | 0

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How to write a table in a textarea on a Matlab App?
app.Zsc.Value(cas)=compose(formatSpec,Out_Zsc(cas)); First off, your code Out_Zsc(cas) is an attempt to subscript at table with...

4 days ago | 0

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Que hacer cuando aparece un dato discreto NaN
In the worst case, there might be nothing you can do. But possibly what you could do is convert your for loop into a while loop...

4 days ago | 0

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use map data structure with simulink -android
Containers.map data structures cannot be output from Simulink blocks. The newer dictionary data type also cannot be output from...

4 days ago | 0

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Audioread Bug with Opus (maximum value returned exceeding 1)
I would say it is a bug. audioread() documents If you do not specify dataType, or dataType is 'double', then y is of type doubl...

4 days ago | 0

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compute square rooot and square of each element
You can use element-wise power, the .^ operator. For example x = [27 64] x.^(1/3)

5 days ago | 0

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Can I use figures generated by view(net) command freely in my thesis and academic papers?
Yes, you can use derived outputs in your publication. license_agreement.txt Program Offering Guide Release 2024b Part Two:...

6 days ago | 1

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Facing issue in executing P code
In email you sent me another important detail, namely that your primary error is "file is created before 2007 b." At this poin...

6 days ago | 0

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Which model did detect use?
No. detect() for laneBoundariesDetector objects documents, The laneBoundaryDetector object detects lane boundaries in images by...

7 days ago | 0

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How do I replace colordef?
As of R2025a (currently in pre-release) there are new facilities for controlling desktop color schemes that overlap with colorde...

7 days ago | 0

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Why does containers.Map('KeyType','double') silently return a map with KeyType 'char' ?
containers.Map('KeyType','double') is interpreted as being an instance of calling M = containers.Map(keySet,valueSet) You nee...

8 days ago | 0

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Why trapz is giving me negative area?
The syntax of trapz() is trapz(X, Y) -- so independent variable followed by dependent variable. If you trapz(freq, power) then ...

9 days ago | 0

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Hi everybody. I'm kind of new to MATLAb and looking to get more efficient in my coding. This feels clunky to me and I feel like I could definitely shorten it. Any ideas?
You do not need the loops. for f = 1:4 DeltaV(f) = ve(f,1)*log(mi(f,1)/mf(f,1)); mf_DV2(f) = mi(f,1)/(exp(DV2/(ve(f,1...

9 days ago | 0

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PIN configuration without Hardware Support Package
No, it does not.

10 days ago | 0

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How to use neural network classifier in predict function?
See https://www.mathworks.com/matlabcentral/answers/427309-classify-requires-at-least-3-arguments#answer_445205 for more informa...

10 days ago | 1

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Adding Volshow Plot to Existing Figure
There is no apparent way to combine volshow() with anything else. The volume object returned by volumeViewer() does not have an ...

10 days ago | 0

Answered
rect function on the interval x= -5:0.1:5.
Well, as a basic framework it is fine... after making y a call to rectangularPulse... and after changing the title and ylabel.....

10 days ago | 0

Walter Roberson

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