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How to get specified data in table
Where T is your table: idx = strcmpi(T.OutputCase,'Pushover-x'); out = T(idx,{'StepNum','GlobalFX','GlobalFZ'}) https://www.m...

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What is the fastest way to do repeated element wise matrix multiplication?
Reduce the number of operations inside the loop by replacing TIMES and SUM with MTIMES (of course adjusting the matrix/vector or...

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Dealing data with text and numerical in .txt file
T = readtable('data.txt', 'Delimiter',{' ',':',','}, 'MultipleDelimsAsOne',true)

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Struct field name with space or special character
"Is there a way to have space in structure field names?" No.

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Editing csv data and convert it into a table
Lets fix the file so that it is formatted as a proper CSV file. Then importing it is trivial. S = readlines('EnergyLIS.csv') % ...

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Convert double to datetime when importing .csv
T = readtable('Trace.csv', 'Delimiter',';', 'VariableNamingRule','preserve') P = wildcardPattern + "(X)"; F = @(n) datetime(n,...

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how to automate this manual code containing if else conditons?
S = [1 1 1 1 2 2 2 2 2 2]; V{1} = [20 10 40 50 40 30 20 10 20 30]; V{2} = [10 20 30 20 10 30 20 40 20 30]; M = vertcat(V{:});...

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Creating a colorbar in Matlab
"Is this colorbar automatic colors? As in Matlab picks its default colours?" Yes. The default colormap is described here: http...

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Array indices must be positive integers or logical values. Error
x1= -2:0.01:2; % decimal comma -> point f1 = x1.^2-1; f2 = sin(x1); h1 = plot(x1,f1,'b',x1,f2,'r') % removed superfluous inde...

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using "&" with logical array
"why is not correct using &?" Who says that it is not "correct" ? What you show is not a code error (underlined in red), it is ...

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How do I control the format of the date stamp on a plot axis with datetime values?
That is named the secondary label and has some rather rudimentary controls, e.g.: https://www.mathworks.com/help/matlab/ref/xse...

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I don't know how to fix this, and I honestly don't know what caused this with chebfun
"...I honestly don't know what caused this with chebfun" You modified the function (perhaps accidentally) by adding some code o...

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A bug? input: 1/0 output: -Inf
"A bug? input: 1/0 output: -Inf" Not a bug. Because your value x is actually negative zero not positive zero: https://en.wikip...

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Weird display in date plotting
Lets convert your data into DATETIME (as they should be) and PLOT them: Date = {'2009-12';'2010-01';'2010-02';'2010-03';'2010-0...

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load .mat files in loop
Create some fake data files (it is much better when you provide some data files for us to work with): X=1; save 'S_out_02-10-20...

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Not able to save a ".mat" file when the excel workbook is fetched within a function
"I am trying to fetch an excel sheet from a function and save it as a ".mat" file" That task is much easier and much more relia...

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error Unrecognized function or variable help me please :(!
That really is very bad data design: one single numeric array would be much better than storing lots of numeric scalars in a hug...

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Put the separator every thousands
Here are some more interesting testcases (with both one hundred million as well as one billion): S = ["100000000";"1000000000";...

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Is there a way to "vectorize" this segment of code?
S = string(randi([0,9], 5,4)) D = str2double(join(S,""))

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Renaming group of files
P = '.'; % absolute or relative path to where the files are saved. F = 'image*.bmp'; % filename with wildcard and file extensio...

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How to have a user select a file and then matlab automatically go into multiple subfolders and pull out a multiple text files and import them in as a table
Let DIR to do the work for you! DIR will happily search in subfolders for specific files, if you tell it to: P = uigetdir('C:\u...

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How to use setvaropts for strangely-formatted text file
First lets see if READTABLE et al can ignore those space characters on a simple test file: type testformat.csv readtable('test...

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Unable to comprehend "time" function output
"Is this output returning the difference between time components of calenderDuration function or only time duration between time...

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Extract Numbers from Mixed string
B = 'single snap detector: 1 S2L:232867 S2R:3151621 S3L:0 S3R:0'; Method one: SSCANF: V = sscanf(B,'%*[^:]:%d') % very efficie...

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How to call a separate function to a new program
"This was my attempt, that went poorly." The basic cause is your continued usage of INPUT everywhere, and hiding the function b...

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Reading ping output using readtable
Here is an easy way to import all numeric data as numeric, and with minimal post-processing for the datestamp: T = readtable("t...

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Where to store images on computer for imread
"Is this because the image is not stored in the right place on my computer.." The only "right place" is the location where you ...

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How to solve " Error using vertcat Dimensions of arrays being concatenated are not consistent " problem ?
You probably think that your square brackets are creating a 4x1 vector. But they aren't, because of the random space characters...

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How to fix broken function code?
Use array division here: s_2 = sum((x.*y)./(delta_y.^2)); % ^^ and here: s_5 = sum(x.^2./(delta_y.^2)); % ...

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Excel to timetable, problem with datetime
"Can anyone see the reason?" The date format you are attempting to use does not match the dates given in the file text: there a...

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