First colum of CSV-imported table has "x___" added to its name

12 次查看（过去 30 天）
z8080
z8080 2019-10-21
评论： z8080 2019-10-22
I have a bunch of automatically-generated CSV files with headers, which I'd like to import into Matlab as a table. I used code such as
T = readtable('d:\test.csv', 'readvariablenames', true);
However, even though the name of the CSV's first column is runNr, the first column in the Matlab table gets named "x___runNr"
This clearly has something to do with the CSV files being in a slightly format different from that expected by Matlab. For instance, if I manually change the name of that first cell in Excel to something else, then reopen the CSV, the cell contents are all merged into a cell, on every row.
Still, I am not sure what to do to fix this, since I cannot change the format of the CSVs.
Any help?
  1 个评论
Star Strider
Star Strider 2019-10-21
It imports correctly for me in R2019b (Update 1):
T =
runNr repNr trialNr file
_____ _____ _______ ____________________
NaN NaN NaN {0×0 char }
NaN NaN NaN {0×0 char }
NaN NaN NaN {0×0 char }
1 1 1 {'stimuli/12C1.wav'}
(Posting only a relevant subset of the columns.)

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Jeremy Hughes
Jeremy Hughes 2019-10-21
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 the beginning.
  8 个评论
显示 6更早的评论
Steven Lord
Steven Lord 2019-10-22
You could post-process the imported table to change the variable name. Something like this should work, though I haven't tried it:
mytable.Properties.VariableNames{1} = ...
strrep(mytable.Properties.VariableNames{1}, 'x___', '');

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Data Import from MATLAB 的更多信息

标签

产品


版本

R2016b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by