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Help splitting string using strsplit

6 次查看（过去 30 天）
Richard Youden
Richard Youden 2019-1-4
编辑： madhan ravi 2019-1-7
I have a large set of data which is presented as a string, for example:
1;2;3;4;5;6;7;8 etc...
I use:
strsplit(data,';')
and that breaks everything up into individual cells.
However I have found an issue with some data. My logger is 100% reliable so sometimes I get data which looks like:
;;;;;6;7;8 etc...
Using the strsplit command I get:
NaN 6 7 8
What I'd like is
NaN NaN NaN NaN NaN 6 7 8
Any suggestions?

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采纳的回答

Geoff Hayes
Geoff Hayes 2019-1-4
编辑：Geoff Hayes 2019-1-4
Richard - from strsplit try doing the following
strsplit(data, ';', 'CollapseDelimiters', false)
so that the consecutive empty delimiters are not collapsed into one cell.

更多回答（2 个）

madhan ravi
madhan ravi 2019-1-4
编辑：madhan ravi 2019-1-7
str=';;;;;6;7;8';
expr=';';
C=str2double(regexp(str,expr,'split')) % edited after Jan’s comment
%[~,c]=regexp(str,expr,'match','split');
%Result=cellfun(@str2double,c)
Gives:
Result =
NaN NaN NaN NaN NaN 6 7 8
  2 个评论
Jan
Jan 2019-1-7
编辑：Jan 2019-1-7
+1. regexp returns the wanted cell string as 1st output when using 'split' without 'match':
C = regexp(str, expr, 'split')
and str2double works with a cellstring directly. So this is simpler and faster:
Result = str2double(regexp(str, expr, 'split'))
madhan ravi
madhan ravi 2019-1-7
Echt toll Jan! Danke schön , selbsverständlich jetzt..

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Richard Youden
Richard Youden 2019-1-7
Thanks for the responses, greatly appreciated.
Richard

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