Opposite to horzcat?

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nilsotto
nilsotto 2016-3-7
评论： nilsotto 2016-3-7
How do I subtract a part of a string? i.e the opposite functionality of horzcat. Say that I have a string = 'textstring' and I want to subtract string so that I get string2 = 'text'.
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Stephen23
Stephen23 2016-3-7
编辑：Stephen23 2016-3-7
Keep in mind that there is no such thing as the opposite of concatenation given just one string as an input, because by concatenating you lose information (i.e. the lengths of the parts). The only way to truly perform the opposite operation to concatenation requires that you store the part lengths as well as the concatenated string.

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回答（3 个）

Guillaume
Guillaume 2016-3-7
Note that if what you want to do is just separate a filename into its different components, you can use fileparts:
[~, name, extension] = fileparts('kalle.mat')
Walter Roberson
Walter Roberson 2016-3-7
Strings are row vector of char, so index the vectors.
string2 = string(1:4);
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Torsten
Torsten 2016-3-7
string2 = string(1:end-characters_to_be_removed_from_the_end);
Best wishes
Torsten.
nilsotto
nilsotto 2016-3-7
Many thanks Torsten!

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Torsten
Torsten 2016-3-7
string2 = string(1:4);
Best wishes
Torsten.

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