
Jeremy Hughes
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Content Feed
unexpected writetable and readtable behavior
I think part of this is that the table looks like this: T1 = cell2table({[1 2 3], 2}) Where most tables look like: T2 = table...
24 giorni fa | 0
writestruct does not reproduce the input of readstruct
Unfortunately, there's no way to get that to happen 100% of the time, and readstruct/writestruct are not meant to do that. In fa...
4 mesi fa | 0
| accettato
xlsread error in 2018b
xlsread uses an active Excel process on windows and has different behavior entirely on other platforms (or if excel isn't instal...
4 mesi fa | 0
Repeat writing to Excel workbook on OneDrive causes "You may not have write permissions or the file may be open by another application" error.
One Drive is syncing files to the cloud when they are updated--it locks those files when that happens so you can't write to it f...
4 mesi fa | 1
| accettato
I want to export data to txt file in Loop
If you want to write the data to one file, this should work for i=1:N data = readtable(files(i).name); % Assuming you...
4 mesi fa | 0
Inviato
MATLAB For-Each
Tools for simplifying for-loops. Customizable loop iteration.
5 mesi fa | 1 download |
Problems reading datetimes with readtable
There is a slight issue with the file format in question. The second case looks to readtable like three columns if you choose sp...
5 mesi fa | 0
| accettato
Nonstandard input date format into readstruct function?
I believe this is a bug. I've created a bug report internally. Thanks.
6 mesi fa | 0
| accettato
Importing Excel Database Into MATLAB
This issue is in the call to readtabkle test = readtable('./dataset2.xlsx','Sheet','Sheet1','Range','A2:CA26','TreatAsEmpty',{'...
6 mesi fa | 0
formatstring error when using tabularTextDatastore
Turns out this was a bug in R2020a and is been fixed in R2020b. See: https://www.mathworks.com/support/bugreports/2263913 You c...
6 mesi fa | 0
MATLAB system command bug - returns partial stdout
Very late to the story here, but there was a bug in the linux kernal that affected the system command in this way. https://www.m...
8 mesi fa | 0
Readtable is not reading my delimiter and datetime columns correctly
Passing in the delimiter is the right thing to do. The detectImportOptions function (which is being called by readtable) tries t...
11 mesi fa | 0
Is it possible to decide which line is variable names in readtable?
You can try: readtable(filename,"NumHeaderLines",2) or opts = detectImportOptions(filename) opts.VariableNamesRange = "A3"...
11 mesi fa | 0
filedatastore; read M mat files of size (1xL) into single tall array that is of size (1, L*M)
In general, you'll have better luck identifying where the problem lies by looking at each piece of the code separately. fcn = @...
circa un anno fa | 1
| accettato
Help with code, writematrix not working. Please help fix
The error reffers to mpower.m being a script and not a function. mpower is a builtin function, and mpower.m contains only help t...
circa un anno fa | 0
Export arrays to excel
If each variable is 1x5000 then your original code is creating a 1x35000 block of data when you put it in the table. This is val...
circa un anno fa | 0
| accettato
fwrite and MATLAB for a raid0 disk - Only one lane?
I was playing around with this and found that this is much faster (by a factor of 3 on my machine): fwrite(fid,data(:),"double"...
circa un anno fa | 0
Reading .txt file in MATLAB with issue in formatting
The issue is that \" is not how CSV files (and thus readtable) escape doube-quotes. To escape quotes, the file should have "". ...
oltre un anno fa | 0
Export data to specified excel rows using writematrix
I believe it should be possible to do this using (almost) the syntax you tried, and there are some suggestions in the comments, ...
oltre un anno fa | 0
| accettato
How can I identify the maximum value in a column and then grab specific cells in the same row as that value?
Sounds like, in MATLAB table nomenclature, you want to find the row of the table that contains the maximum value of a particular...
oltre un anno fa | 0
| accettato
"Unable to find or open 'Filename.txt'" error in MATLAB 2022a for files from a shared network drive.
Try first >> cd Z:\Groups\Smith_G\Ryan Poland\MultiPAS-IV\Data\NO2 Calibration\20210930 If that works, then you can either ad...
oltre un anno fa | 0
| accettato
File Extensions Name-Value pair error
The issue is that .csv isn't a supported spreadsheet format. Many people associate csv with spreadsheet, and that's likely due t...
oltre un anno fa | 0
| accettato
Create a datastore from a table
I had no issue with arrayDatastore taking a table. Could you share some sample code with the errors or problems you're seeing? ...
oltre un anno fa | 0
How to use textscan with empty char fields
The format specifier %c always reads one character, no matter what that character is. What you likely want it %s, which reads al...
oltre un anno fa | 1
| accettato
Convert serial number date in date string - Excel file
First, I would suggest using readcell if you want to get datetimes. This will give you the right thing by default. Otherwise, c...
oltre un anno fa | 0
readmatrix not working in 2021b
I agree with the previous answer, but readmatrix is probably not what's being shadowed. It's probably something readmatrix relie...
oltre un anno fa | 0
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how to read mixed date and data
I made some corrections in the comments above, but this is how I would do this more robustly using partial detection with detect...
oltre un anno fa | 0
| accettato
use of readtable to read unstructured data
Based on the file attached, I suggest treating this as a fixed width file. opts = detectImportOptions("sample.txt","FileType","...
oltre un anno fa | 0
How to delete multiple rows from a table using a for loop (with a condition)?
I wouldn't use a for loop. MATLAB excells at array operations. A = randn(12,5); % Make some data with positive and negative v...
quasi 2 anni fa | 0
| accettato
Why are there a few bytes added every time I call writetable?
writetable write "into" a sheet by default. And there's some meta-data being added, but I'm not sure if it's MATLAB, or the exce...
quasi 2 anni fa | 0
| accettato