parallel package

[Clinton Winant]

I want to be able to compute 5 integrals in parallel.  I have read
http://wiki.octave.org/Parallel_package

in spite of the title this page contains nothing about parcellfun, 
I have built the following test routine:

vector_in = 1:5;

vector_out = pararrayfun(5,parquad(procid), vector_x)

function out=parquad(procid)
  switch procid
    case{1}
      out=quadgk(@(r) ntgrnd1(r),0,1);
    case{2}
      out=2*quadgk(@(r) ntgrnd1(r),0,1);
    case{3}
      out=3*quadgk(@(r) ntgrnd1(r),0,1);
    case{4}
      out=4*quadgk(@(r) ntgrnd1(r),0,1);
    case{5}
      out=5*quadgk(@(r) ntgrnd1(r),0,1);
  endswitch
endfunction

The error return is:

>> testpararrayfun
error: 'procid' undefined near line 3 column 36
error: called from
    testpararrayfun at line 3 column 12

Can anybody throw some light on this??

Thanks