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Walter Roberson


Last seen: Today
45 064 total contributions since 2011

I do not do free private consulting. If you want to bring my attention to something, send a link to the MATLAB Answers location.

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Answered
Does MPS 2016a version run on RHEL 6
Yes. https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/SystemRequirements-Release2016a_Lin...

environ 7 heures ago | 0

| accepted

Answered
How to form a matrix from a given condition?
randi([-1 1], 24, 5)

environ 8 heures ago | 0

| accepted

Answered
Could anyone help me to solve the error in the following code
plotconfusion(categorical(Y),categorical(predictedY)) This will possibly not work if you are still using that old 2015 version ...

environ 8 heures ago | 0

Answered
how to convert the mutiple colum into single colum using colon :
duration(YourData(:,4), YourData(:,5), YourData(:,6), 'format', 'hh:mm:ss.SSSS')

environ 8 heures ago | 0

| accepted

Answered
MEX file for MCC DAQ
https://www.mccdaq.com/daq-software/universal-library.aspx

environ 8 heures ago | 0

| accepted

Answered
How to show first value on axis cuted with xlim?
Altering the xlim is not going to change the automatic tick calculation, which tries for 4 to 5 ticks at nice "round" numbers. I...

environ 9 heures ago | 1

| accepted

Answered
Converting Multiple Dicom Images into Jpeg
input = '/Users/brianngo/Desktop/CT-imaging/'; output = '/Users/brianngo/Desktop/CT-imaging-Jpeg/'; ext = '.png' FileList = d...

environ 10 heures ago | 0

| accepted

Answered
Increasing efficiency of one-hot encoding
catnum = uint8(TheCategorical(:).'); numcat = max(catnum); OH = zeros(NumberOfObservations, numcat); OH(sub2ind(size(OH), 1:N...

environ 10 heures ago | 0

Answered
Is there a groot default for xlabel and ylabel HorizontalAlignment and VerticalAlignment?
There does not appear to be a way to specify it down that far. You can get as far as specifying DefaultAxesXLabel which you wou...

environ 10 heures ago | 0

Answered
niftiwrite and 'Version' parameter
You are reading the documentation for a newer version than you have. The 'Version' option was added in R2019a.

environ 10 heures ago | 0

| accepted

Answered
How to find maximum value of each event present in a series ?
T = readtable('2000.xslx'); Inten = T{:,5}; mask = Inten.' > 0; %row starts = strfind([0 mask], [0 1]); stops = strfind([ma...

environ 11 heures ago | 1

Answered
Does "B&R Automation Studio Target" comes with Embedded coder or any other specific tool box we need to install for it ?
No. It is a third party toolbox that appears to be a paid product, and it requires that you have several toolboxes: MATLAB, Simu...

environ 12 heures ago | 0

Answered
How to change string name being passed through function argument automatically?
P = Table1.Properties.VariableNames; for k = 1:length(P) Name = P{k}; Value = Table1{:, k}; MyPlot(Name, ...

environ 13 heures ago | 0

Answered
Unable to convert expression into double array
Your F21 and F41 involve several variables including w_N_H. You do assign values to those variables, so you cannot convert the e...

environ 15 heures ago | 0

Answered
how can I compute distances:
dist() is part of the Deep Learning Toolbox

environ 24 heures ago | 0

Answered
Works in App designer but not with the standalone program
MATLAB Compiler and MATLAB Coder cannot be used with Symbolic Toolbox. This is not expected to change any time soon.

1 jour ago | 0

Answered
Get ans automatically in console
No.

1 jour ago | 0

Answered
Is there a difference between HSL and HSV colour space ?
STOP ASKING. Your question is inappropriate for MATLAB Answers. MATLAB Answers is not a general resource for optical theory: MA...

1 jour ago | 0

Answered
Display specific element of MATLAB table in bold?
Not for table() objects, no. For uitable() objects, then for traditional figures, there is a trick of using HTML1.1 wrappers ar...

1 jour ago | 0

Answered
I want to use for loop while solving ode but my code is not running
You are overwriting the output. Try nrange = length(range); X = cell(nrange,1); for j=1:nrange f = range(j); ...

1 jour ago | 0

Answered
Hi, the following code calculate true but cant plot the functions, why ? . Not this code display error : Error using mesh (line 75) Data dimensions must agree. Error in bispectwPARZENEWINDmod (line 82) mesh(w1,w2,fn); please help me ?
[w1,w2]=meshgrid(0:pi/20:pi,0:pi/20:pi); w1 and w2 are going to be 21 x 21 regardless of the inputs. NP1=NP+1; NP1 is going t...

1 jour ago | 0

| accepted

Answered
summation of equation in matlab
sum(S(1:n) .* (P - C(1:n))) In the case where n is the same as the size of S and C then this can be simplified to sum(S .* (P ...

1 jour ago | 0

| accepted

Answered
phase advancing of a signal by 90 degrees
Multiply the signal by -1i . You can either do that by a multiplication, or by taking complex(imag(TheSignal), -real(TheSignal...

1 jour ago | 0

Answered
Warning when opening a mat file
You need to have the class definition of XXX on your path in order to be able to load those objects.

1 jour ago | 0

| accepted

Answered
Non-Linear optimization
If I recall correctly, non-linear optimization cannot yet be handled with Problem Based Optimization. Therefore you will need to...

1 jour ago | 0

Answered
How to plot multiple multcompare plots from anova
multcompare() calls meansgraph(), which always unconditionally does a clf() which erases the entire current figure. Therefore t...

1 jour ago | 0

| accepted

Answered
How do I plot my own coded function?
function [answer, n] = mylog(x) fprintf("calculating the log:\n"); tolerance = 1e-10; maxIterations = 300; answer = ...

1 jour ago | 1

| accepted

Answered
how can I calculate the current simulation time
https://www.mathworks.com/help/simulink/slref/clock.html The Simulink clock block provides the current simulated time.

1 jour ago | 0

Answered
plot graph for nested if
l = input('l='); t = 0:100; g = zeros(size(t)); mask = t>2 & t <= 80 g(mask) = ((3/(309*0.0014))*((((0.0000126*(t(mask)-2))/...

1 jour ago | 0

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