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String select specific positions

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Patrick Brown
Patrick Brown 2017-1-31
回答： Jan 2017-1-31
Hi, I have a cell (Numbers) with different values and I have a vector with the positions I want to take (NumbersSelect) When I write a=Numbers{NumbersSelect} I only get in the variable a the first number I want to select I have developed a for loop in order to take all the numbers there is a way to do it without a for loop ??? thanks

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回答（2 个）

Adam
Adam 2017-1-31
a = [ Numbers{NumbersSelect} ];
  2 个评论
Patrick Brown
Patrick Brown 2017-1-31
thanks :) but in the case of a string all the values will be together without spaces
Star Strider
Star Strider 2017-1-31
If you have spaces in your original string, first use a regexp call to create a cell array of strings from the individual words:
str = 'I have a string';
strc = regexp(str, '\ ', 'split')
strc =
1×4 cell array
'I' 'have' 'a' 'string'
That should work with Adam’s code. If you have something else that wouldn’t work with this approach, you need to share it with us.

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Jan
Jan 2017-1-31
Perhaps you mean:
a = Numbers(NumbersSelect)
or
a = sprintf('%s ', Numbers{NumbersSelect})
If this does not help, please post some real example data and the wanted output in valid Matlab syntax.

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