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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...

fast 5 Jahre vor | 0

Beantwortet
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...

fast 5 Jahre vor | 0

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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...

etwa 5 Jahre vor | 1

| akzeptiert

Beantwortet
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.)

etwa 5 Jahre vor | 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 ...

etwa 5 Jahre vor | 2

Beantwortet
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...

etwa 5 Jahre vor | 0

| akzeptiert

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

etwa 5 Jahre vor | 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...

etwa 5 Jahre vor | 0

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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,...

etwa 5 Jahre vor | 1

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Beantwortet
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...

etwa 5 Jahre vor | 0

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

etwa 5 Jahre vor | 0

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

etwa 5 Jahre vor | 0

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

etwa 5 Jahre vor | 3

| akzeptiert

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

mehr als 5 Jahre vor | 0

| akzeptiert

Beantwortet
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'...

mehr als 5 Jahre vor | 0

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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...

mehr als 5 Jahre vor | 0

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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-...

mehr als 5 Jahre vor | 0

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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...

mehr als 5 Jahre vor | 1

| akzeptiert

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

mehr als 5 Jahre vor | 1

| akzeptiert

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

mehr als 5 Jahre vor | 0

Beantwortet
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...

mehr als 5 Jahre vor | 0

Beantwortet
Loading/Reading .log File
Try this: data = readtable('omar_timing_test_MG125_Block_1.log','FileType','text') Jeremy

mehr als 5 Jahre vor | 2

Beantwortet
Windows .NET Framework Update Breaks READTABLE()
Try, readtable(filename,'Basic',true) % or UseExcel false in a more recent release.

mehr als 5 Jahre vor | 0

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WRITETABLE to spreadhseet mysterious failure
"=$0.00" This is probably the culprit. The writetable function has two modes: 'UseExcel' = true/false. If you're using Excel®,...

mehr als 5 Jahre vor | 1

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Transpose/combine several variables using csvwrite or writematrix
The function writematrix is available in R2019a.

mehr als 5 Jahre vor | 0

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import large csv file
The issue with 22 digits of precision in DECIMAL is that MATLAB's default number type is DOUBLE which really can only handle aro...

mehr als 5 Jahre vor | 0

Beantwortet
Effective way to extract rows (range) from a text file
Readling line by line is quite ineffecient. Try this: C = textscan(fid,'%f','delimiter','\n', 'headerlines',182);

mehr als 5 Jahre vor | 0

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How to convert xlswrite to writematrix?
XLSWRITE can write either a matrix (e.g. [ 1 2 4;5 7 8] or a cell {'a' 'b';'c' 'd'}) If your input is a cell, use WRITECELL. ...

mehr als 5 Jahre vor | 0

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Importing a Large CSV in chunks and getting Data Range Invalid
I'd reccomend using tabularTextDatastore for this case. It will try to automatically detect formats and handle the reading of se...

mehr als 5 Jahre vor | 0

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Extracting Unknown Amount of Columns from Excel Data
I recommend using READMATRIX if you have access to R2019a, or READTABLE for earlier releases. A = readmatrix(filename) Once yo...

mehr als 5 Jahre vor | 0