Differentiating between a binary column and a decimal column from dlmread data.

2015 7 23
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更新时间：2015 7 23
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Hi all-
My program creates an array from dlmread data from a text file, and the file has any number of columns. Each of the columns either contains binary (ie. 10001) or decimal (ie 17.0) data. Is there a function, or an easy way I can determine which columns contain which type of data?
Thanks!

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2015-7-23

0 个投票

If you use dlmread to read your text file, and your file looks like
1001 2 4
0101 3 5
0001 5 6
a=dlmread('file.txt')
The result is
1001 2 4
101 3 5
1 5 6
Your binary numbers are modified

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Wade Warren
Wade Warren 2015-7-23
Yah- I understand that- which is why I'm curious if there is any way to differentiate? Let me know, thanks!
Azzi Abdelmalek
Azzi Abdelmalek 2015-7-23
don't use dlmread to read such files, you can use textscan function to read your data
fid=fopen('file.txt')
out=textscan(fid,'%s','delimiter','\n')
fclose(fid)
out=out{:}
Wade Warren
Wade Warren 2015-7-23
Alright- so if I use textscan, how would I differentiate the two types of data? Really appreciate your help!
Azzi Abdelmalek
Azzi Abdelmalek 2015-7-23
If your file looks like
45 1001 2
65.3 0101 3.35
101 0011 2.65
The code
fid=fopen('file.txt')
out=textscan(fid,'%s','delimiter','\n')
fclose(fid)
out=out{:}
a=regexp(out,'[\.\d]*','match')
n=numel(a{1})
b=reshape([a{:}],n,[])'
c=regexp(b,'(1|0)+')
column=find(all(~cellfun(@isempty,c)))

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