Answered
Sum of columns in a mxn Matrix on matlab
s=column_sum(A,cl+1); Will crash if pass cl > size(A,1) as there's no error checking for cl being out of range. As for the...

3 years ago | 0

Answered
Save a stream of bytes into a zip file
PKZip was/is shareware, it should be possible to turn the code for it into a callable mex file that works from memory; it's quit...

3 years ago | 0

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Answered
How to extrapolate an x value from a fitting curve?
xvalues = [10; 12; 22; 28]; yvalues = [1; 2; 3; 4]; % Fit model to data. [fitresult, gof] = fit( xvalues, yvalues, 'linearint...

3 years ago | 0

Answered
Data in multiple separate .xlsx sheets and move to only one .xlsx sheet
%fn=websave('cpc_global_precip_precip.2020.xlsx','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1166433/cpc_glo...

3 years ago | 0

Answered
plotting an array in frequency domain
L=numel(t); % how long is t vector??? f = Fs*(0:L-1); % zero-based frequency of same number elements NOTA BENE:: T...

3 years ago | 0

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Answered
How to run an external Matlab(.m) files and call its functions from an application code-view file?
See <class-definition-and-organization> area in the docs -- you package your classes so your application can import them and the...

3 years ago | 1

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Answered
How to fix error about interp1?
From the description it appears you have only 5 unique values in wdepth(:,1). As the doc and the error message say, interp1 can...

3 years ago | 0

Answered
Vectorize for-loop with indexing
S=accumarray(idx(:),B(:)); See accumarray for all the many permutations that can be made... An alternative using grouping va...

3 years ago | 1

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Answered
how to delete decimal places
'Pends. You mean just at the display or in the actual data? If it's for the display, there isn't an "integer" format option; '...

3 years ago | 0

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Answered
Specify output data type of "find" function
" Is there something akin to the "like" functionality [in find]...?" No. Everything numeric including indices in MATLAB is a d...

3 years ago | 1

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Answered
Replace String in Table if Substring is Found
id=["Broken statuette", "Terracotta statuette","Statuette"]; % the variable valset=[id,"Other Stuff"]; ...

3 years ago | 0

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How to calculate the daily and yearly mean of a temperature dataset
Read as timetable and then use retime. About 2-3 lines of code each should do it.

3 years ago | 1

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What codes do I have to use to determine if the data are Gaussian distributed?
MATLAB implements jbtest and adtest in the Statistics TB. My personal preference is to use the Shapiro-Wilk test. See <NIST Ha...

3 years ago | 1

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Answered
Bar to variation a parameter into script
No real idea what the above is asking for, specifically, but... V=[0.15;500;21]; Y=categorical({'kp','ki','kd'}); barh(Y,V,0....

3 years ago | 0

Answered
Timeline plot of GPS (Latitude and Longitude) data - Plot GPS overtime.
tT.Time=datetime(tT.Year, tT.Month, tT.Day, tT.Hour, tT.Minute, tT.Sec); plot(tT.Time, tT{:,{'Latitude', 'Longitude', 'Altitude...

3 years ago | 0

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Answered
How to use a vector as an input in a function?
Carrying on from @Matt's comment above... Is it really going to be more convenient to assemble all the elements into one long v...

3 years ago | 1

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Answered
Automatic Adjusting of xticks depending of data
categorical axes are somewhat peculiar -- the categorical variable always contains all the categories for which it was created a...

3 years ago | 0

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Answered
How to save and read a 3D matrix in MATLAB?
"readmatrix(filename) creates an array by reading column-oriented data..." A matrix in MATLAB is 2D; writematrix writes the pla...

3 years ago | 0

Answered
textscan doesn't stop at blank space in txt file
opt=detectImportOptions(websave('walking_01.txt','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1163318/walking...

3 years ago | 0

Answered
Matlab plot not showing correct values
No need for and don't use loops here... p=[0.1553567,-2.0416,9.1837,-14.829,-1.3703,32.821,-1.3155]; % store poly coefficien...

3 years ago | 0

Answered
How can I find X for given Y value in a fitted curve. I have a non- linear equation of 6th order.
"ALWAYS" plot your equation first -- fnY=@(X)0.0178*(X.^6) -0.3463*(X.^5) + 2.6845*(X.^4) -10.426*(X.^3) + 21.192*(X.^2) -20.64...

3 years ago | 0

Answered
Speed up vectorized code automatic expansion logical indexing
function F = myfun(l,aprime,a_val,z_val) aux = 3.5; cons = a_val+l*z_val - aprime; F=-inf(size(cons)); indx=c...

3 years ago | 0

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Answered
Calculating mean and std from every continuous variable in a table
vartype to the rescue...for the base case of numeric S = vartype('numeric'); % create the indexing variable by...

3 years ago | 0

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Answered
Finding column values for each unique combination of two other columnar values in a table
% build a dataset XYZ=randi(1000,30,3); U=arrayfun(@(i)unique(XYZ(:,i)),1:3,'uni',0); N=min(cellfun(@numel,U)); tXYZ=array2t...

3 years ago | 0

Answered
How to make a normal distribution using the following parameters: mean, standard error, minimum, and maximum?
" have a standard error value of 0.05." I have always heard "standard error" as being the std/mean -- using 0.05 as the standar...

3 years ago | 0

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How to split an array cell with multiple text line with carriage return
We can't test without actual data sample to be sure what is actually embedded in the string, but if it's using standard whitesp...

3 years ago | 0

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How do i merge multiple columns in a table into one?
See mergevars -- MATLAB has anticipated your every desire... :)

3 years ago | 0

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Using cellfun to remove nans from uniform cell
If they are and always will be the same size, I'd use subterfuge... [ra,ca]=size(R{1}); % save the array sizes firs...

3 years ago | 0

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Answered
Error: Invalid parameter/value pair arguments.
" Is there any problem with using 'color'?" In xline((1/(freq*24*60*60))*1e9,'color',[125,0,251]/255 , [num2str(freq), ' days...

3 years ago | 0

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Answered
how to select values in one set of data based on value range in another data set
Well, you'll have to have the same number of elements of each for time and speed; and it will have to be in order of the time ve...

3 years ago | 1