mean of all positives in a cell array

I have a cell array where the cells are something like this: [ 92x1 double] [215x1 double] [127x1 double] [120x1 double] [ 89x1 double] ....and so on(1000 odd cells). I want to find the means of the negative and positive elements in these cells individually. I tried :

if true
      % code
    end
  m = (s{i})<0;
  m1 =cellfun(@(x) [mean(mean(x(m,:),2))],s,'un',0)

but when I try the same for all positive elements using n = (s{i})>0; it says index exceeds matrix dimension. Any idea of what I may be doing wrong and how I can fix this or any other suggestions? Thanks!

[Hiskiel Stephanus]

Hi

Please find a solution to your problem in the attached Matlab file. You should of course adjust it accordingly to suit your needs.

Regards Hiskiel

Answer 1

[Andrei Bobrov]

m1 =cellfun(@(x) [mean(x(x<0)),mean(x(x>0))],s,'un',0)

[BoIs]

That gives the following error:

Undefined operator '<' for input arguments of type 'cell'. Error in (x)[mean(s(s<0)),mean(s(s>0))]

[Thorsten]

Try

m1 =cellfun(@(x) [mean(x(x<0)),mean(x(x>0))],s,'un',0);

[Andrei Bobrov]

Thank you Thorsten! I'm corrected the my answer.

[BoIs]

Thankyou both!! that worked!

[BoIs]

Im new to matlab, just wanted to know how does the ; at the end exactly help with the error? Thanks!