已回答
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...

3 years 前 | 1

| 已接受

已回答
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...

3 years 前 | 0

已回答
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...

3 years 前 | 0

| 已接受

已回答
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...

3 years 前 | 0

| 已接受

已回答
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","...

3 years 前 | 0

已回答
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...

3 years 前 | 0

| 已接受

已回答
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...

3 years 前 | 0

| 已接受

已回答
Unable to detect datetime or duration data in file for row times
Hi Sangani, This is a consequence of how Excel stores "time" data. It represents it as a "number" internally, with a custom for...

3 years 前 | 1

| 已接受

已回答
{0*0 char} error while Importing .dat file
Instead of readtable and table2array, you could instead use readmatrix (as of R2019a) directly. The reason some of the columns...

3 years 前 | 0

| 已接受

已回答
readmatrix command not working
This looks like an installation issue to me. Something is missing/broken causing initialization error in the internal code. Doe...

3 years 前 | 0

已回答
Reading .txt with multiple delimiters
Readtable accepts multiple delimiters. Try this: T = readtable(filename,"Delimiter",[" ","|"])

3 years 前 | 0

已回答
readtable not reading logical values as expected
The default results of detectImportOptions seeing "1" & "0" will be numeric, and the default logical reading expects "true","t" ...

3 years 前 | 1

| 已接受

已回答
why "writetable" replaces points with commas ???
@Walter Roberson, @Peter PerkinsYou're both right. Walter is more right. An XLSX file is a zip file containing XML data which ...

3 years 前 | 0

已回答
Importing 4D Excel data sets
You might try readcell. It will at least give you all the data. You will have to restructure it to get the format you'd like.

3 years 前 | 0

已回答
Program architecture for handling large .csv files
First, it would help to see an example file, and some sample code that demonstrates the problem. Here's the best I can say wit...

3 years 前 | 0

已回答
how to use setvartype on a table that is already existing
This will do what you're literally asking for. T = array2table(strings(200,0)) % 200 variables, 0 rows, all string type But I ...

3 years 前 | 0

| 已接受

已回答
Problem with readtable MATLAB R2020a+
My best guess is that there's something installed on the path that conflicts with a function//variable that readtable is using i...

3 years 前 | 0

| 已接受

已回答
Error csvread() numeric field -> *i
It it weren't for the "*" character this would work. Something like "1-2i" will be read as complex numbers. If you have contro...

3 years 前 | 0

已回答
For loop to replace n/a with NaN in a table
What does this do? data= readtable("Wetland_Water_Quality_data_1.csv","TreatAsMissing","n/a");

3 years 前 | 0

已回答
CSV file reading and applying loop to plot graphs
Without an example file, it's impossible to say why the code doesn't work as expected. I'm just working backwards from the error...

3 years 前 | 0

| 已接受

已回答
CSV file reading and applying loop to plot graphs
You should look at what nhdr is when you see the error. It's likely an empty value which makes nhdr+2 empty, and [nhdr+2 inf] ju...

3 years 前 | 0

已回答
ReadTable Producing ExtraVar Headers
Main issue is that the sample code is a bad practice. Once created by detectImportOptions, the options don't get updated based o...

3 years 前 | 0

| 已接受

已回答
Mixed character Tab delimited csv file read in
Ahhh, that's because the data is in quotes. readmatrix assumes quoted data is meant to be preserved, so the only way to get tha...

3 years 前 | 1

已回答
Mixed character Tab delimited csv file read in
Just a note: CSV means comma-separated-values, but if this is TAB separated, it's not really CSV. If the data in the sections a...

3 years 前 | 0

已回答
xlsread isn't storing all the cell values from a column
The issue is in the call to readcell which isn't using the correct syntax. See readcell documentation for details. It looks lik...

3 years 前 | 0

已回答
Quick question regarding CSV file reading.
I'd do this: opts = detectImportOptions('cycle1.csv','Delimiter',',','VariableNamingRule','preserve'); opts.SelectedVariableNa...

3 years 前 | 0

已回答
read csv file with dates and numerical in R2016b
Try this: opts = detectImportOptions(filename) T = readtable(filename,opts);

3 years 前 | 0

已回答
xlswrite substitute that writes to specific columns
This syntax is equivalent to writematrix(A,filename,'Range',xlRange)

3 years 前 | 1

| 已接受

已回答
How to import several csv files (Nan,numeric,text) for operate with them after
I suggest readtable.

3 years 前 | 1

| 已接受

已回答
Find and replace (overwriting) to the middle of an existing binary file
fopen(filename,'a') % append mode https://www.mathworks.com/help/matlab/ref/fopen.html#btrnibn-1-permission Then use fseek to ...

3 years 前 | 0

| 已接受