help on matlab code error

function varargout=mixtureplot(mix,varargin)

mix.dist(1:6)=='Expone'

    % define the grid on the x-axis    
    M=1000;  % number of grid points
    [ss is]=sort(mix.par); %sort the means to define the domain of the plot
    cl=0.01; % define the lower bound from the lower quantile 

 cu=0.95; % define the upper bound from the upper quantile    

    x=linspace(-log(1-cl)/mix.par(is(mix.K)),-log(1-cu)/mix.par(is(1)),M);

    pd=mixturepdf(mix,x);

    plot(x,pd,'k');

end

when I call this function by

par=struct('mu',[ -1 2]);

mix=struct('dist','Exponential','K',2,'weight',[0.5 0.5 ],'par',par);

mixtureplot(mix)

gave me this error

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

Error in mixtureplot (line 232) [ss is]=sort(mix.par); %sort the means to define the domain of the plot

any one help me for this error??

Answer 1

[Image Analyst]

mix.par is a structure. It doesn't automatically know that it should take the "mu" field of the par structure to do its sorting on. Try mix.par.mu and see if that works.

[mutah]

Do you mean I must to change on [ss is]=sort(mix.par);

to became [ss is]=sort(mix.par.mu); or what ?

if you mean that , i worked that but still the error

[Image Analyst]

What does "i worked that but still the error" mean? Did it work or not?