Matlab: convert array of number to array of strings, with formatting

Question

I would like to convert a numeric array like this:

[12.3134 25.3234 34.4190 466.6765 55.5454]

Into a cell array of strings, with a single digit after the decimal point like this:

'12.3' '25.3' '34.6' '466.6' '55.5'

This arrayfun gets me close, but I can't figure out how to add the format spec to the num2str function.

arrayfun(@num2str, A, 'UniformOutput', false)

sco1 · Accepted Answer · 2016-12-12 20:48:11Z

1

You can pass inputs to anonymous functions:

A = [12.3134 25.3234 34.4190 466.6765 55.5454];
B = arrayfun(@(x)num2str(x, '%.1f'), A, 'UniformOutput', false);

Which returns:

B =

  1×5 cell array

    '12.3'    '25.3'    '34.4'    '466.7'    '55.5'

answered Dec 12, 2016 at 20:48

sco1

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matlabbit · Accepted Answer · 2016-12-14 01:28:41Z

0

Starting in 16b you can do

>> A = [12.3134 25.3234 34.4190 466.6765 55.5454];
>> B = compose('%.1f',A)

B = 

  1×5 string array

    "12.3"    "25.3"    "34.4"    "466.7"    "55.5"

answered Dec 14, 2016 at 1:28

matlabbit

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