Cannot import csv data with textscan

4 次查看（过去 30 天）
Thomas Hermelin
Thomas Hermelin 2017-10-25
编辑： Thomas Hermelin 2017-10-25
Hi, I'm trying to import several csv files to use the data. The problem is that xlsread is too slow and csvread, dlmread or importdata don't work. I suspect the encoding to be the source of the problem. So I'm trying to use textscan to do it.
My csv file is looking like that:
N°. x[mm] y[mm] Rotation / x[°]
1 30.92221 3.66636
2 30.92751 3.66634 -0.259299
3 30.93981 3.66649 0.696742
4 30.94510 3.66680 3.36023
5 30.95740 3.66706 1.24399
6 30.96970 3.66663 -2.04397
7 30.97500 3.66638 -2.66614
8 30.98029 3.66614 -2.61545
9 30.99259 3.66589 -1.17048
10 30.99789 3.66629 4.33688
1 31.10346 3.66539 -1.00677
2 30.99259 3.66589 -1.17048
So here i'm using the following code which I think is ok :
file = fopen('test.csv','rt');
data2 = textscan(file,'%f%f%f%f','Delimiter','\t','HeaderLines',1,'TreatAsEmpty',{'N°.','x[mm]','y[mm]','Rotation / x[°]'});
But it's returning
data2 =
[0x1 double] [0x1 double] [0x1 double] [0x1 double]
When I suppress the first line, it works. It appears that the parameter 'headerlines' doesn't work...
Any idea ?
Thank you !!
PS: I work with matlab R2009a
EDIT: The ° symbol appears to be the problem, does anyone know how to suppress it directly from matlab... ? Or any solution to bypass that??

请先登录，再回答此问题。

回答（1 个）

KSSV
KSSV 2017-10-25
use xlsread
[num,txt,raw] = xlsread('test.csv') ;
  1 个评论
Thomas Hermelin
Thomas Hermelin 2017-10-25
Yes, I forgot to mention it, I'm already using it, but it takes 8 secs to import the data vs 0.1 with textscan. That's why I'm trying to use it. Thanks for your answer !

请先登录，再进行评论。

类别

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

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by