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How can I create a mat file which changes the values of a column in excel table into the mat file's column headers?
I thnk you'd want to use readtimetable or readtable to bring the first xlsx into matlab. But I'm confused: the second xlsx only ...

ungefär 3 år ago | 0

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Problem using ranova for analysis of variance
Scott, haven't you explicitly not included DietaryGroup with that minus sign? I think you are using it for predictors in a way t...

ungefär 3 år ago | 0

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EDF reading: edfread gives timetable; possible to get struct?
Andrew, FEX issues aside, it's possible that the DataRecordOutputType parameter to edfread may help. But it's also possible that...

ungefär 3 år ago | 1

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how to use setvartype on a table that is already existing
setvartype is an import feature. let's come back to that. cell creates a cell array containing nothing but 0x0 doubles: >> c =...

ungefär 3 år ago | 0

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cant put char array in a table of char!
Don't use raw char arrays other than a char row vector. You will eventually be unhappy. Unless you are using a very old version ...

ungefär 3 år ago | 0

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How to filter first fixation times for participants
Like SS, I tried to make sense of this code. And I found the same thing: in a recent version of MATLAB, these few lines would ha...

ungefär 3 år ago | 0

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Conversion and Merger of date and time using datetime
You are correct to use datatime to parse those times of day with : as the decimal separator; duration can't currently do that. A...

ungefär 3 år ago | 1

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Normality test of the Matlab function 'randn'
With all due respect (and I mean that), nonsense. MadhiH, I don't know what you mean when you say that, "the p-value is too hig...

mer än 3 år ago | 3

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Convert julian date SAC to specific format date
I'm gonna suggest another solution that might be simpler to follow. First thing is that this isn't a Julian Date in the strict...

mer än 3 år ago | 0

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How to easily propagate the error of a column ?
Aaron, I think that depends on what you mean by "propagate the uncertainties". There is a simple formula for the variance of the...

mer än 3 år ago | 0

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Time series data events
Ben, I'm not sure where you are starting from. I'm gonna show how to do this with timetables. Imagine you have a timetable conta...

mer än 3 år ago | 1

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Answered
get GPS time to calulate time since referencje epoch
Marta, that depends on what you mean by "GPS time". MATLAB doesn't yet have direct support for GPS time, but if all you want is...

nästan 4 år ago | 1

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Answered
Find the certain amount of values between NaNs and make another variable from these values
There's no need to loop over the 750K elements. Do this on each row x of your data, i.e. loop from 1:50. Try stepping through t...

nästan 4 år ago | 0

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Finding row number of a variable existing in a table
I have no idea what you mean by "In this case the second column and third row of the table.", but this sounds like what you want...

nästan 4 år ago | 0

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Answered
Correlating values from a table using a for loop
Not sure why you think a "loop is better". Try this: >> t = table([1;1;1;1;2;2;2;2;2;2],rand(10,1),rand(10,1),'VariableNames',[...

nästan 4 år ago | 0

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Comparing matrices and filling in the gaps
There are just so many things you can do with joins: >> a = table(["A";"B";"C";"D";"E";"F"]); >> b = table(["B";"D";"F"], [5;1...

nästan 4 år ago | 0

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Time weighted average after every 60mins
Or put the data in a timetable and use retime(tt,'hourly','mean'). If you need weights, you can write your own aggregation funct...

nästan 4 år ago | 0

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How can I construct a struct handle from a string?
A scalar struct with a field for each variable that you would have put in the workspace is often useful. It's like a private wor...

nästan 4 år ago | 1

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Keeping columns names but replacing value for iteration
You are horzcat'ing tables, and table variable names must be unique. But your two tables both have variables named dist1, dist2,...

nästan 4 år ago | 1

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Preallocation of a vector of structure
Audric, it seems like dpb understand what you are doing better than I do, but "in which each cell will be a structure of 42 fiel...

nästan 4 år ago | 0

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convert hourly data to daily sum
Turn your table into a timetable, and use retime: >> hourmelt = table2timetable(hourmelt); >> head(hourmelt) ans = 8×1 tim...

nästan 4 år ago | 0

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missing/incorrect use of math operators?
Jocelyn, modulo Geoff's concerns, I think your whole loop can be done as x = 200*3*(0:5)'; Vx = (sqrt(Vx_o) - ((k3/2).*x))^2; ...

nästan 4 år ago | 0

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Matching the size of two matrices based on values of a column
"contains time in a day in decimal form": That would be your problem. Use timetables with datetimes (or maybe durations?), and u...

nästan 4 år ago | 1

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Answered
How can I fit a mesh plot axis to a vector of time values?
Does this not do what you need? >> d = datetime(2020,11,1:20); >> t = 1:15; >> mesh(d,t,x) Those dates and temps are evenly-...

nästan 4 år ago | 0

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how do you plot fft of each sensor for both test
Zeshan, you have all your data in a numeric array, t1. I strongly recommend that you convert that to a timetable. Then your plot...

nästan 4 år ago | 1

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compare datetime with different lengths
SW, if all you want is a plot, there's nothing special you need to do, just plot them. t1 = datetime(2020,11,19) + caldays(0:2:...

nästan 4 år ago | 0

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Condition for Specific Data collection
Unless you are using a fairly old version of MATLAB, I strognly recommend that you stay away from xlsread, and use readtable or ...

nästan 4 år ago | 0

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importing data and plotting
In a more recent version of MATLAB, I would suggest to not use importdata. It's old and gives you a result that is hard to work ...

nästan 4 år ago | 0

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How do I run my MATLAB program through multiple excel files in the folder?
There is. First step: use readmatrix or readtable, stay away from the much older xlsread. Ditto xlswrite. Then use something lik...

nästan 4 år ago | 0

Answered
How to import an excel file and split a column
The short answer is no. Your timestamps are stored in the spreadsheet as floating point numbers. But why do you need to split ti...

nästan 4 år ago | 0

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