How to build a cell array of strings containing numbers
How would you efficiently build a cell array of strings which contain numbers (in my particular case, a cell array of labels for a legend).
Eg:{'series 1', 'series 2', 'series 3'}
I've tried things along the lines of
sprintf('series %i', {1:10})
but apparently sprintf and cell arrays don't play nice together.
Something like this works if I only want the number, but doesn't 开发者_C百科work if I want text as well.
cellstr(int2str([1:10]'))
Obviously, it can be done in a loop, but there must be a clever one-liner way of doing this.
I know it's been 4 years but I came across the undocumented function sprintfc which is used to do exactly what you want:
CellArray = sprintfc('series %i',1:3);
CellArray =
'series 1' 'series 2' 'series 3'
well... it might be useful to someone I guess.
The functions INT2STR and STRCAT do the trick:
>> cellArray = strcat({'series '},int2str((1:3).')).'
cellArray =
'series 1' 'series 2' 'series 3'
A slightly different way:
cellArray = cellstr( num2str((1:3)', 'series %d') )
or alternatively
cellArray = strcat( num2str((1:3)', 'series %d'), {} )
with the result:
cellArray =
'series 1'
'series 2'
'series 3'
You can use the one-liner below for more complicated output:
cellarray = arrayfun(@(x) {sprintf('item %d of 3', x)}, 1:3)
cellarray =
'item 1 of 3' 'item 2 of 3' 'item 3 of 3'
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