Risposto
What is this fft code doing?
See the documentation of FFT and read the example for a one-sided PSD from the FFT carefully... Basically, the reason for the a...

quasi 5 anni fa | 0

Risposto
Find and compare rows in table by column value
groupsummary(table,{'Year','Ed_level'},@(x)mean(x(randperm(numel(x),50)),'Income')

quasi 5 anni fa | 0

Risposto
How do I select several rows in Excel?
I'll throw the last example code out as an Answer as well as Comment just for visibility -- and it may turn out useful for other...

quasi 5 anni fa | 2

Risposto
How do I select several rows in Excel?
You can use any valid range expression to address any range you can code the logic to compute addresses of. You must then use e...

quasi 5 anni fa | 1

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Risposto
Save a matrix .mat in a specific folder with a variable name
save(filepath,'variablename') The functional form of save needs the file name to be the variable containing the (hopefully full...

quasi 5 anni fa | 0

Risposto
is there any way to pause the code if there exist an imaginary variable?
While I've not tried it, the following should work if you can arrange the conditions needed. The first one may be the kicker in...

quasi 5 anni fa | 1

Risposto
Adding text programmatically to a figure
text() is exclusively a child of an axes, not a figure. To write text outside the boundaries of an axis, use the annotation obj...

quasi 5 anni fa | 0

Risposto
How to scan directories and find a specific file in each folder and their respective subfolders
Of course. However, with base MATLAB syntax you have to traverse the folder tree manually/explicitly in code; there are a numbe...

quasi 5 anni fa | 0

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Risposto
Adding latex equation to a Matlab Live Script and Plot the equation
LaTeX is simply a display feature, at least so far it isn't tied to the actual code...

quasi 5 anni fa | 0

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enumeration Fails with get(), set() arguments
OK, I (finally!) figured out how to code the above to use a named constant with external interface -- don't use MATLAB enumerati...

quasi 5 anni fa | 0

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How to lookup and return a corresponding value from table?
I'd start by turning 'obs' into a categorical variable... cmnt0 = categorical({'obs1';'obs2';'obs3';'obs4'}); curve=[1;2;3;2];...

quasi 5 anni fa | 0

Risposto
I like to save a cell array into text file
>> c={'Al','Mg';'Na','K'} c = 2×2 cell array {'Al'} {'Mg'} {'Na'} {'K' } >> join(c,'') ans = 2×1 cell a...

quasi 5 anni fa | 0

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Risposto
How to Interpolate scalar on new grid
Error using griddedInterpolant Sample points must be unique. comes from x = Results(:,1); y = Results(:,2); ... [X,Y]=mesh...

quasi 5 anni fa | 0

Risposto
How to save this matrix?
If there's just one array/matrix M, then fid=fopen('test.txt','w'); fmt=[repmat('%.4f',1,size(M,2)) '\n']; % build ...

quasi 5 anni fa | 1

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Risposto
how can i get data sampling rate and FFT bin width?
"What is the default value of the parameters fft?" None...the fft doesn't care, the sample rate is set solely by the data colle...

quasi 5 anni fa | 0

Risposto
How to plot an array with an hourly time stamp without starting at 00:00:00?
You can build complete datetime variables from the input by something like-- dt1=datetime("yesterday")+duration(T(1)); % ...

quasi 5 anni fa | 1

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Risposto
How can I convert file txt into matrix?
Simply put, you can't. An array of anything (even a cell array) has to be regular (your cell array above is Nx1; it is only the...

quasi 5 anni fa | 0

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Box plot with categorical axis - without LaTex interpreter
Much easier now... :) optFV=detectImportOptions('fruitvegprices.csv') % lets you then set the input...

quasi 5 anni fa | 0

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Risposto
calculate kurtosis in matlab and minitab but not same answer
Looks like Minitab uses the bias-corrected estimator with the "-3" convention applied -- K>> kurtosis(x(:,2),0) ans = ...

quasi 5 anni fa | 0

Risposto
sorting data tables according to results from cluster analysis
Y=X(outperm,:); % presuming X is the variable guessing from the initial code...

quasi 5 anni fa | 1

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Risposto
sort the matrix X, then sort the another matrix in the same order as X
Matrix expansion of subscripts gets you here... Q=cell2mat(arrayfun(@(i) P(i,indx(i,:)),[1:size(P,1)].','UniformOutput',false))...

quasi 5 anni fa | 0

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Risposto
How can I plot a circle over an interval (range of values)
hL=plot([-1327,0],[0 0],'LineWidth',8,'Color',[1 1 1]*0.5); xlim([-1500 200]); ylim([-20 20]) xticks([]),yticks([]) hold on ...

quasi 5 anni fa | 0

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Risposto
How to choose values from vector (150 000x1). When i need first 512 values for x, next 512 values for y and next 512 values for z. And separate vector by this style to the end
XYZ=reshape(V,512,[]); then process by column. Most MATLAB functions operate by column natively; depending upon what you're do...

quasi 5 anni fa | 0

Risposto
R2017b Compatibility
https://www.mathworks.com/support/requirements/matlab-system-requirements.html?s_tid=srchtitle_MAC%20Monterey_6 indicates R2021b...

quasi 5 anni fa | 0

Risposto
How do I get my graphs to converge on one ?
... [yob,t,xob] = lsim(syst,r,t,[x0 x0ob]); figure(2); hold on plot(t,xob(:,1)/max(xob(:,1)),'r'); plot(t,xob(:,2)/abs(min(...

quasi 5 anni fa | 0

Risposto
select folder that also includes subfolders
There is no builtin gui tool that does more than multi-select on files within a single folder; you have to traverse the director...

quasi 5 anni fa | 0

Domanda


Compiler Preprocessor Stringizing to Add Quotes
OK, carrying on w/ the idea of linking w/ GFORTRAN, I started with one function to see if could build the C binding. It works t...

quasi 5 anni fa | 0 risposte | 0

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Risposto
Using find for table values
Rik's second comment is the pertinent one here -- you're appying the function to the entire table, not a variable within the tab...

quasi 5 anni fa | 0

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How to apply two masks simultaniously for plot
ixBoth=mask2&mask1; plot(x(ixBoth), y(ixBoth, 'g.') Not the place for && short-circuit operator, but the single & for logical ...

quasi 5 anni fa | 0

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Risposto
Converting Intrinsic MATLAB Functions ones(), zeros(), sparse(), diag() to FORTRAN
program testit implicit none real(kind=kind(0.0d0)), allocatable :: A(:,:) integer :: i, j A = zeros(6,4) print...

quasi 5 anni fa | 2

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