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Jeremy Hughes


MathWorks

77 total contributions since 2015

Software Developer, Musician and Science Fiction Writer.

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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>.

19 jours 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...

23 jours ago | 0

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

27 jours ago | 0

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

environ un mois ago | 0

Answered
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®,...

environ un mois ago | 1

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

environ un mois ago | 0

Answered
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...

environ un mois ago | 0

Answered
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);

environ 2 mois ago | 0

Answered
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. ...

environ 2 mois ago | 0

Answered
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...

2 mois ago | 0

Answered
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...

2 mois ago | 0

Answered
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...

2 mois ago | 0

Answered
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...

3 mois ago | 0

Answered
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...

4 mois ago | 0

Answered
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...

5 mois ago | 0

Answered
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...

5 mois ago | 1

Answered
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...

5 mois ago | 1

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

5 mois ago | 1

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

5 mois ago | 1

Answered
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...

5 mois ago | 0

Answered
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...

5 mois ago | 0

Answered
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...

5 mois ago | 0

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

6 mois ago | 0

Answered
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...

6 mois ago | 1

| accepted

Answered
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...

7 mois ago | 1

Answered
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 ...

7 mois ago | 0

| accepted

Answered
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...

8 mois ago | 0

Answered
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...

10 mois ago | 1

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