Reading a CSV ... problems

1 回表示 (過去 30 日間)
Adam Klingest
Adam Klingest 2015 年 3 月 9 日
回答済み: Michael Haderlein 2015 年 3 月 9 日
Hi
I have a .csv file in the following format:
SimpleDB data file version 2.0
TIMESTAMP,mode_0[-],,state_0[-],,Run_0[h],,Feed_0[h],,gbkr_0[-],,bkrop_0[-],,Etot_0[kWh],,Eday_0[kWh],,Pac_0[kW],,Q_0[kVAr],,Iac_0[A],,Uac_0[V],,fac_0[Hz],,cphi_0[-],,Paclim_0[kW],,Qset_0[kVAr],,Pdc_0[kW],,Udc1_0[V],,Idc1_0[A],,Pdc1_0[kW],,Udc2_0[V],,Idc2_0[A],,Pdc2_0[kW],,Udc3_0[V],,Idc3_0[A],,Pdc3_0[kW],,Udc4_0[V],,Idc4_0[A],,Pdc4_0[kW],
1425254400002,???,AAG8/,0,AAG8/,NaN,AAG8/,NaN,AAG8/,false,AAG8/,0,AAG8/,NaN,AAG8/,0.000,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,10.000,AAG8/,0.000,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/
1425254401001,???,AAG8/,0,AAG8/......
It is a very big file, and as you can see contains a lot of NaN's and other strings. I have tried using csvread(), but it doesn't work. I get the
Mismatch between file and format string.
Trouble reading 'Numeric' field from file (row number 1, field number 2) ==>
???,AAG8/,0,AAG8/,NaN,AAG8/,NaN,AAG8/,false,AAG8/,0,AAG8/,NaN,AAG8/,0.000,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,10.000,AAG8/,0.000,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,AAG8/,NaN,A...
I have also tried xlsread(), and it kind of works, but only on a computer with excel installd, and I need it to work on any computer. Does anybody know how I can effectively read such a file, and sort the data under the right header collumns?
Regards Adam

回答 (1 件)

Michael Haderlein
Michael Haderlein 2015 年 3 月 9 日
Reading should be possible with textscan. You can define the format of the data columnwise. Does it help?

カテゴリ

Help Center および File ExchangeLarge Files and Big Data についてさらに検索

Community Treasure Hunt

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

Start Hunting!

Translated by