Answered
How to use Excel application, how can i know all the functions and ways to use it?
Active X is a Microsoft feature, controling the application depends on the APIs the application exposes. For Excel, you should c...

presque 2 ans ago | 1

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using spreadsheet column headers as variable
When you create import options from scratch, you need to specify all the information, including where the variablenames and data...

environ 2 ans ago | 0

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Error using readmatrix - Unable to determine range. Range must be a named range in the sheet or a single cell within 'XFD1048576'.
'Range' also accepts numeric inputs [r1 c1 r2 c2], the drawback being you need to specify the columns. You can specify only the...

environ 2 ans ago | 1

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Answered
Using writetable to create a text file
WriteMode is available in R2020a. What version are you using?

environ 2 ans ago | 0

Answered
How to change the date format of ,txt file?
https://www.mathworks.com/matlabcentral/answers/516121-how-do-i-specify-a-datetime-format-when-reading-a-csv-excel-file

environ 2 ans ago | 0

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Answered
Errors using xlsread to import data from Excel
Sometimes the Excel instalation can break xlsread, there shouldn't be a reason MATLAB install changed anything for you. It might...

environ 2 ans ago | 1

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Answered
how to check whether a sheet exists or not, while using readtable function
I don't know if it's any better, but there is https://www.mathworks.com/help/matlab/ref/sheetnames.html Otherwise, try/catch mi...

environ 2 ans ago | 1

Answered
Error in XML file
You could try fid = fopen(fname); bytes = fread(fid); fclose(fid); find(bytes==1) If that doesn't find anything, then it ma...

plus de 2 ans ago | 0

Answered
Does MATLAB add extra data to text files?
I'd check the new line characters "\r" isn't typically used for a new line in most modern environments. It may be that the tex...

plus de 2 ans ago | 1

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Answered
textscan does not read all rows
If you pass in 'ReturnOnError',false with the textscan call, there will be an error message where the format cannot read your fi...

plus de 2 ans ago | 0

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readtable skipping some rows
detectImportOptions detecting Space as the delimiter, (correctly I think) and is looking at the "N/A" and "NE 45" and treating t...

plus de 2 ans ago | 0

Answered
Read text file with multiple rows of fields
The current best way I know how to do this is with TEXTSCAN. fmt = "%s%s%s%s%*[^\r\n]%*[\r\n]%s%s%s%s" fid = fopen('sampleFile...

plus de 2 ans ago | 1

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Answered
Problems with readtable within parfor on R2018b for Win 64
Try using READTABLE with the 'UseExcel',false parameter. (This might also be 'Basic',true in older releases.)

plus de 2 ans ago | 0

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First colum of CSV-imported table has "x___" added to its name
The file probably has a Byte Order Mark in the beginning. If you read the raw bytes using fopen/fread you can see the mark at ...

plus de 2 ans ago | 2

Answered
How can I increase the speed of this loop?
It's hard to say without looking at the contents of the file's you're reading. You're overriding n in the for loop with n as th...

plus de 2 ans ago | 0

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Answered
textscan with formatted input data
This should be able to read this without much issue. opts = detectImportOptions(filename) T = readtable(filename,opts)

plus de 2 ans ago | 0

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How to read specific numbers (colums) of a csv file
I'd do this: opts = detectImportOptions(filename); opts.SelectedVariableNames = opts.VariableNames([3 4]); T = readtable(file...

plus de 2 ans ago | 0

Answered
Read a very large .csv file, split into parts and save each part into a smaller .csv file
If your plan is to write all the small CSV files out, and do nothing with them in MATLAB, I'd say just use tabularTextDatastore,...

plus de 2 ans ago | 0

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Answered
Read a specified list of images given the filename and the directory the files are in
Datastores are convenient for reading collections of files. imds = imageDatastore(directory) imshow(read(imds)) Each time you...

plus de 2 ans ago | 0

Answered
Readtable for a huge (no good schema) CSV file!
opts = detectImportOptions(FileName,'Delimiter',';','NumHeaderLines',18) T = readtable(FileName,opts)

plus de 2 ans ago | 0

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readtable not understood behaviour
A simpler way to do this would be: lines = splitlines(fileread(filename))

plus de 2 ans ago | 0

Answered
Readtable from i-th row to last row
Try this opts = detectImportOptions(filename,'NumHeaderLines',6) T = readtable(filename,opts)

plus de 2 ans ago | 2

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Answered
Readtable() confused by quotation marks? Matlab 2019a
opts = detectImportOptions('myfile.txt','FileType','text','Delimiter','|') T = readtable('myfile.txt',opts)

plus de 2 ans ago | 0

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Answered
How to read in a non-standard formated CSV file containing times and measurments and change the output format?
You could do this with textscan fid = fopen(file); vars = textscan(fid,'TIM%f%fABC%fDEF%fGHI%f','Delimiter',{','},'Whitespace'...

presque 3 ans ago | 0

Answered
readData() function error message when using mapreduce
ds.TextscanFormats{15} = '%q' That will at least get you past the one line that's causing the problem here. For a more robust a...

presque 3 ans ago | 0

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Answered
Why writetable() adds ' 'true ' table element as ''table?
I think this is a case where using strings would make things more clear. In MATLAB, if I create a char vector and put a single-...

presque 3 ans ago | 0

Answered
Set union of Datastores with TransformedDatastores
Horizontal (i.e. associated reads) ----------- cds = combine(imds,otherds); Vertical (i.e. joining two sets of files into o...

presque 3 ans ago | 1

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Answered
MATLAB 2018a readtable VariableNamesLine bug
What is the result if you pass ReadVariableNames into the function? T = readtable(fullFileName, opts, 'ReadVariableNames', true...

presque 3 ans ago | 1

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Answered
Matlab Compiler not updating text file
There may be another text file with the same name on your path. Try, which -all <filename>.

presque 3 ans ago | 0

Answered
problem reading with format
The leading spaces are not being counted toward the width of the fields as you're expecting. %n.pf - will read at most n charac...

presque 3 ans ago | 0

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