what is the problem of my 'for loop' in a matrix?

Question

Ashraf Afana 2013-5-17

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采纳的回答： David Sanchez

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I'm trying to define some parameters using for loop in a matrix but all the time I have the following error:

i =

1

Undefined function 'isnan' for input arguments of type 'struct'.

My script is:

clear; close all

inpt=importdata('fw12.xlsx');

wave=inpt.data;

cols=size(wave,2);

lenght=size(wave,1);

if i=1:lenght
   i
  scan=wave(i,:);
  dist=scan(8:cols);
  rm=isnan(dist);
  a=find(rm == 0);
  f=dist(a);
  [meanf,stdf,meanf95,std95] = normfit(f);
  summart(i,1)=meanf;
  summart(i,2)=stdf;
  summart(i,3)=meanf95(1);
  summart(i,4)=meanf95(2);
  summart(i,5)=std95(1);
  summart(i,6)=std95(2);
end

Any Suggestion to handle this problem?

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Answer 1

David Sanchez 2013-5-17

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You are using a struct as input variable for isnan function. This isnsn does not work with structs. Follow your code upwards and you will find out that your dist variable is a struct:

inpt -> wave -> scan -> dist

Redifine your variables in order to send a non-struct to isnan.

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Ashraf Afana 2013-5-17

That's fine, but to return my variable 'dist' from structs to matrix I need the function 'struct2dataset', which is available in R2013a and I have R 2012a. So, my next question will be, how can I obtain the 'struct2dataset' function? or how can resolve this problem? Thanks,

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