textscan with formatted input data

2019 10 7
1 个回答
更新时间：2019 10 10
1 次查看（30 天）

0 个投票

I am trying to read an input csv data file with a lot of formatting, example below, and I need to pull it into MATLAB, even if it's in a rough state and needs additional post processing afterwards. The data is separated by commas however each data item is in quotations, and some items are in brackets as well. I've tried a variety of textscan data format options but they don't seem to be working. I have one header row as well, I replaced the header row here with just a generic statement. Any help is appreciated.
***Header Row
"154574","276:13:27:29.905(Bus_Monitor_Card4_core_0)","Type1","1","false","false","false","true","1","true","22","45056","28","276:13:27:29.904576","[64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]","false","31","31","65535","31"
"154808","276:13:27:30.139(Bus_Monitor_Card4_core_0)","Type1","1","false","false","false","false","5","true","22","45056","26","276:13:27:29.940411","[16384, 0, 1, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]","false","31","31","65535","31"
"154808","276:13:27:30.139(Bus_Monitor_Card4_core_0)","Type1","1","false","false","false","false","5","true","22","45056","26","276:13:27:29.990412","[16384, 0, 1, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]","false","31","31","65535","31"
"154808","276:13:27:30.139(Bus_Monitor_Card4_core_0)","Type1","1","false","false","false","false","5","true","22","45056","26","276:13:27:30.040410","[16384, 0, 1, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]","false","31","31","65535","31"
"154808","276:13:27:30.139(Bus_Monitor_Card4_core_0)","Type1","1","false","false","false","false","5","true","22","45056","26","276:13:27:30.090412","[16384, 0, 1, 259, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]","false","31","31","65535","31"

6 个评论
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Stephen23
Stephen23 2019-10-7
@Shawn Grooms: please upload a sample file by clicking the paperclip button.
Stephen23
Stephen23 2019-10-7
编辑：Stephen23 2019-10-7
Shawn Grooms' "Answer" moved here:
Example file attached.
Stephen23
Stephen23 2019-10-7
Star Strider's comment moved here:
I was able to read it without problems with xlsread:
[D,S] = xlsread('SampleTextScanFile.csv');
Some columns import as double-precision variables, and others as character arrays.
Stephen23
Stephen23 2019-10-7
编辑：per isakson 2019-10-10
Shawn Grooms' comment moved here:
This looks like a good solution, however when I searched and read through this earlier it looks like xlsread is not recommended and other options are recommended. I'm going to proceed with this as a solution for the time being, but curious if the other recommended options are preferred / better I suppose?
Stephen23
Stephen23 2019-10-7
编辑：per isakson 2019-10-10
Star Strider's comment moved here:
The xlsread funciton has been supplanted by readmatrix in R2019a, and its use discouraged. However, I sometimes have problems getting readmatrix to import some Excel files correctly, and because not everyone may have readmatrix, I continue to use it in Answers. The xlsread function is still quite useful.
Stephen23
Stephen23 2019-10-7
@Shawn Grooms: please use comments for commenting. Answers are for answering the original question.

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回答（1 个）

Jeremy Hughes
Jeremy Hughes 2019-10-7

0 个投票

This should be able to read this without much issue.
opts = detectImportOptions(filename)
T = readtable(filename,opts)

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