MATLAB: How to convert cell into array of floating point numbers only

arraycellfloating point

I have a 64×1 cell will contents as follows:

'1 mA'
'1.2 mA'
'1.4 mA'
'1.6 mA'
'2 mA'
...

I would like to convert it into an array of floating point numbers – excluding the letters mA. Many thanks, S

Best Answer

splitStrings = cellfun( @(x) strsplit( x, ' ' ), myCell, 'UniformOutput', false );
vals = cellfun( @(x) str2double( x{1} ), splitStrings );

should work assuming your data is always in that format without anything more complicated, though there are probably neater ways.

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MATLAB: Composing arrayfun syntax to extract data from structure

O.k., if you are just messing around with ARRAYFUN.

C(1,1).idx = [1;1;2;3];
C(2,1).idx = [1;1;2];
C(1,1).s = {'a';'a';'ab';'abc'};
C(2,1).s = {'a';'a';'ab'};
[ua,ia,~] = arrayfun(@(x) unique(x.idx,'rows'),C,'Un',0);
V = arrayfun(@(x) C(x).s(ia{x}),1:length(C),'Un',0)

MATLAB: How to find prefix and postfix in a recursive way

C = {'23414','342(1)','34','231'};
pfx = cellfun(@(s)regexp(s,'\d','match'),C,'UniformOutput',false);
fun = @(s)arrayfun(@(n)s(n:end),regexp(s,'(\d|\(\d\))'),'UniformOutput',false);
sfx = cellfun(fun,C,'UniformOutput',false);

and the two output cell arrays contain:

>> pfx{:}
ans = 
    '2'    '3'    '4'    '1'    '4'
ans = 
    '3'    '4'    '2'    '1'
ans = 
    '3'    '4'
ans = 
    '2'    '3'    '1'
>> sfx{:}
ans = 
    '23414'    '3414'    '414'    '14'    '4'
ans = 
    '342(1)'    '42(1)'    '2(1)'    '(1)'
ans = 
    '34'    '4'
ans = 
    '231'    '31'    '1'

Best Answer

Related Solutions

MATLAB: Composing arrayfun syntax to extract data from structure

MATLAB: How to find prefix and postfix in a recursive way

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