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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...

alrededor de 7 años hace | 0

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Reading a csv file
It's hard to say without know what you'll be doing with the data, but I'd reccomend using the table directly unless you need a d...

alrededor de 7 años hace | 0

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How to use fread to read little endian data?
The control of byte order is on the creation of the file identifier.https://www.mathworks.com/help/matlab/ref/fopen.html#btrnibn...

alrededor de 7 años hace | 0

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I have an array of date time values. How do I separate Date and time and enter it in separate columns in excel?
Assuming you have a datetime array called DateAndTime which is a column vector: Date = dateshift(DateAndTime,'start','day') Ti...

alrededor de 7 años hace | 0

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Import time and date text file
I can think of many different ways to approach this. The most straight forward would be to pass in a format string to READTABLE...

alrededor de 7 años hace | 0

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how can i export a numeric vector that starts from 0 eg. 0001 from matlab to excel?
What's happening when you pass "0001" into a spreadsheet is the same thing that would happen if you typed that number into the s...

alrededor de 7 años hace | 1

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Problem reading a csv file
Your CSV is a semicolon delimited file with comma as the decimal separator character. This ought to work opts = detectImport...

alrededor de 7 años hace | 1

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How to solve: Error using "csvread". Too many output arguments
If you have both text and numeric data, I suggest you try READTABLE instead.

alrededor de 7 años hace | 1

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MATLAB 2018b readtable error after update
This is an installation issue. Although this might not resolve the issue try >> restoredefaultpath >> rehash toolboxcache You...

más de 7 años hace | 4

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How to read out a textfile from a specific line
You might try READTABLE with import options: >> opts = detectImportOptions(filename) % Check that the number of header lines...

más de 7 años hace | 0

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How can I speed up "writetable" for large tables?
As a more programatic solution based on Walter's suggestion: If you're in a recent release (I think 18b), you can provide the 'U...

más de 7 años hace | 0

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2018 release: Slow xlsread
Is this happening with all files? You should contact MathWorks support and include an example file for which reading has slowed...

más de 7 años hace | 0

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How to read multiple CSVs files
I'd try tabularTextDatastore.

más de 7 años hace | 0

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How can I import only the numbers from an csv.-files with a text header?
You should be able to add 'NumHeaderLines',7 to the datastore call and get what you want. The issue is that this looks a lot li...

más de 7 años hace | 1

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How to read a text file into a numeric array?
This was a tricky one. I was able to get something in, but there are extra rows at the end that aren't importable. This file ap...

más de 7 años hace | 1

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i am asking the user for a file and i wana transform that file into a matrix, i dont know how many lines or colums there is i only know that is a square matrix and that the numbers are seperated with space bar
T = readtable(filename,'Delimiter',' '); A = T.Variables

más de 7 años hace | 0

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How to put a string in a text file to define headers to data?
The issue is here: fprintf(filename1, '# GHz S DB 50'); fprintf doesn't accept a file name, it need an open, writable file-id ...

más de 7 años hace | 0

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Reading csv file NaN and NaT problem
Based on the description, I think this is what you'd want. Without an attached file, I cannot say more. opts = detectImport...

más de 7 años hace | 0

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Hello! i have been given a task to find monthly log return time series and then aggregate each to an annual log return series. but every code i use, follows with an error. how do i convert the data to annual the easiest possible way?
Should one of these be *Time*? |log(RFRmonthly. _Index_./ lagmatrix(RFRmonthly. _Index_,1));|

más de 7 años hace | 0

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How to use textscan to read my 2nd column and ignore the string or non numerical values?
I suggest trying opts = detectImportOptions(filename) T = readtable(filename,opts) Also, if you want to ignore those...

más de 7 años hace | 1

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xlswrite randomly overwrites entire spreadsheet!
I suggest trying in a newer version of MATLAB. If it works there, contact technical support to report the bug. I'd also sugg...

más de 7 años hace | 0

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Issue with data format when using textscan()
The format should be all lower case for duration. %{hh:mm:ss}T However, the data appears to be delimited as semicolon. Y...

casi 8 años hace | 1

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MatLab doesn't read my .TXT file correct
Thanks for uploading the file! The first issue I see is that the file has a UTF-16 byte-order-mark. The file is stored as UT...

casi 8 años hace | 5

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Trouble loading in mixed data from txt file
You're adding 'CollectOutput' which is concatenating all the numeric columns into one. If you remove that, you should get the nu...

casi 8 años hace | 1

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Yet another TEXTSCAN question...
If the numbers are always surrounded by double-quotes, try this, t = textscan(s,'"%f""%f""%f"','Delimiter',',') or, ...

casi 8 años hace | 0

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" Error using readtable (line 198) An internal error occurred ". How can I solve this issue?
I tried, T = readtable('Nuevo.xlsx') T = readtable('Nuevo.xlsx','Basic',true) And both worked for me. Sometimes the ...

casi 8 años hace | 2

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readtable function ignores certain options
READTABLE uses the variable names defined in the Options over the ones in the file. This is because you can re-use the options o...

alrededor de 8 años hace | 0

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error using readtable with "opts" and "TreatAsEmpty" together
Hi, Only a subset of the parameters in READTABLE are allowed with the options. Part of the reason is that, in the import opti...

alrededor de 8 años hace | 1

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reading in text files
You should try |tabularTextDatastore| assuming everything has the same format. ds = tabularTextDatastore(pathToFiles) ds...

alrededor de 8 años hace | 1

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Convert timestamps in CSV file to seconds using readtable and table2timetable
This will work as long as the times are on the same day (as in the file). T = readtable(file,'Format','%{dd-MMM-uuuu HH:m...

alrededor de 8 años hace | 0

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