Stack on index digits
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Hello
I have an index vector I need to process and I want to introduce another digit in front of the current index but without summing them.
As an example say I got
Idx=[1 2 3 1 2 3 1 2 3] the value I want to add to this index say is "2"
Is there a way to create the following
IdxNew= [21 22 23 21 22 23 21 22 23]
(the values are not summed - is just the digit 2 is introduced in front of every previous digit)
Is there an easy way to stuck digits like that ?
Thank you in advance
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Accepted Answer
Sean de Wolski
on 18 Apr 2013
idx2 = str2num(regexprep(num2str(Idx),'([0-9]+)','2$1'))
But why do you want to do this? This sounds like there might be a better way around it.
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