Answered
Convert a Complex Number to exponential real
MATLAB has builtin functions abs (or hypot()) and angle() for the above explicit implementations... >> x=complex(2,5); >> cm...

5 years ago | 3

Answered
Extracting elements from one matrix and placing in another
MATLAB assigns the complete array to the LHS without having used subscrpting to indicate you want to place each plane extracted ...

5 years ago | 1

Answered
Listing C: folder contents
"The dir command in the Windows command shell behaves in this way, but that's no reason for the MATLAB command to do the same th...

5 years ago | 0

Answered
How to print strings from a data text file that is in correlation to an indices text file?
Put the indices into a 3D array and just index -- indices(:,:,1)=[1 6 2 3; 3 2 4 0; 1 6 4 7; 0 1 4 7; ... 0 5 ...

5 years ago | 0

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Answered
How to improve efficiency when checking for unique combinations of table values?
tFruit=readtable('fruit.txt'); tFruit=tFruit(:,[1:2:end]); tFruit.Properties.VariableNames={'Fruit','Color','Data'}; tFruit.F...

5 years ago | 0

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Answered
Removing Leading Spaces before xml tags at each line.
The tool seems to format the file to reflect the XML structure; dunno why it would necessarily hurt, but I don't do such things ...

5 years ago | 1

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Answered
How can I solve multiple equations? (Pipeline Design)
function Pc=pipelineExternalPC(d,t,sy) % Usage: % Pc=pipelineExternalPC(d,t,sy) % % returns Pc, pipeline external collapse...

5 years ago | 1

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Answered
Define a matrix in terms of kronecker product
>> I=3;N=4; >> kron(ones(1,N),eye(I)) ans = 1 0 0 1 0 0 1 0 0 1 0 0 0 ...

5 years ago | 0

Answered
Scientific notation at y-axis with "ax.YAxis.Exponent"
Well, here's a crude first pass... expn=floor(log10(yticks)); mant=yticks./10.^(expn); lbls=cellstr(num2str([mant;expn].','%d...

5 years ago | 0

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Answered
Scientific notation at y-axis with "ax.YAxis.Exponent"
I don't see a user-settable format to force the notation (although I didn't use Yair's getundoc to poke) with arbitrary tick val...

5 years ago | 0

Answered
FFT, dominant frequency doesnt match time domain?
Your problem is simply that the dominant frequency isn't the same as one of the frequency bin midpoints depending on the number ...

5 years ago | 2

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Answered
Change one line in Excel file
I'd avoid xlswrite and use writecell instead. Use the 'Range' parameter to put in the right place and not disturb anything else...

5 years ago | 0

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How to find the find the pattern in each row of Matrix?
A=[A;A(3,:)]; % make sure one row has same pattern % the engine B=(A~=0); ...

5 years ago | 1

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How to make segmented regression line and determine the breakpoints?
I've answered this several time in the past, but never think to keep a link... https://www.mathworks.com/matlabcentral/answers/...

5 years ago | 0

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Conditional Scatter plotting based on third data set
>> SX=1*all(M==1)+2*(any(M==2)&any(M==3))+3*all(M==3) SX = 2 1 2 1 3 >> Create categorical variable fr...

5 years ago | 0

Answered
callculating values using cfit object with multiple p values
I don't see any syntax by which to do that with the coefficents for multiple fits stored that way and the doc for cfit explicitl...

5 years ago | 0

Answered
While loop to get a specific section of data
Far easier if you would attach a (small) sample of the dataset, but the general idea would be thresholdUp=1; ...

5 years ago | 0

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Answered
How to count "gaps" consisting of designated values in a vector and obtain start and end indices?
v=sprintf('%d',ismember(sample_data_vector,invalid_values)|isnan(sample_data_vector)); iStart=strfind(v,'01')+1; iEnd=strfind(...

5 years ago | 0

Answered
Plotting multiple boxplots in same window...array for each boxplot is not the same length...causing error
Two ways to do it -- Use grouping variables and catenate the data into one long vector-- Data=[BoxSecurity; BoxWidefield_123;...

5 years ago | 0

Answered
Problem with duplicated points in Matlab.
You'll find that numel(unique(data(:,1))) < size(data,1) numel(unique(data(:,2))) < size(data,1) for one or both expressions....

5 years ago | 1

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Answered
How to ignore lines in file via rmmissing?
Don't create sequentially-named variables, use the array MATLAB so conveniently provided you... filename1= 'TEST.xlsx' %arxeio ...

5 years ago | 0

Answered
How do i insert seconds in a timeseries data when the frequency of the data is inconsistent?
indx=[0;find(minutes(diff(TT.Time)));height(TT)]; % find change locations indices N=diff(indx); ...

5 years ago | 0

Answered
Confusino regarding statistical tests for given distribution
You need to examine what the default parameters of the function return -- >> [h,p,stats]=chi2gof(data) h = 1.00 p ...

5 years ago | 0

Answered
Designate order of categorical array?
You have to create an ordinal categorical array of the desired ordering of magnitudes to force other than the alphabetic orderin...

5 years ago | 1

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Answered
For loop not doing what I want it to
TT=table2timetable(path_data); % convert the table to a time table TT=retime(TT,unique(TT.time),'mean'); % retim...

5 years ago | 0

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Answered
frequently used function for table variable
Don't pass a table to your function, have it accept numeric inputs and return same; then just call it with the table names. Muc...

5 years ago | 1

Answered
How to index/address the chart width and height using Position option in Text command?
pos=Geo.Position; % save as array x=pos(1)+pos(3)/2; % midpoint position horizontal y=pos(2)+pos(4)/2; % midpoint position...

5 years ago | 1

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Answered
Code to calculate raw moments?
Don't really need a function for that although could wrap in one if desired -- It would just be M=x.^N; NB: N in such an expr...

5 years ago | 0

Answered
How to calculate data higher than monthly mean value for one year data set?
rowfun to the rescue. TT_15.Month=month(TT_15.DT1); % generate grouping variable; rowfun() needs it in table TT_HHWL15=row...

5 years ago | 1

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Answered
the goto fortran90 command convert to matlab
OK, came back -- when indent code, the construct is more readily visible -- the two loops are completely independent and the fir...

5 years ago | 1