Convert cell to double

Hi guys, I got a matrix C,

>>C = [{1} {2} ; {'@CF'} {2}] 

C = 

[  1]    [2]
'@CF'    [2]

>>whos C

Name      Size            Bytes  Class    Attributes

C         2x2               478  cell

How can I transfer C into double so that:

>>C

C = 
1    2
NaN  2

I've tried Str2double(C), it doesn't work. It returns,

   NaN   NaN
   NaN   NaN

[Jan]

Of course STR2DOUBLE does not work, because the elements of your cell matrix are not strings.

Btw, you can write the cell tighter as: {1, 2; '@CF', 2}

[Walter Roberson]

Duplicate is at http://www.mathworks.co.uk/matlabcentral/answers/43821-convert-cell-array-to-double

Answer 1

[Honglei Chen]

Your C already contains numbers, so those cells are invalid for str2double

C(~cellfun(@isnumeric,C))={nan}