How to form the connection or bus incidence matrix ?

[Saeed Ahmed]

Hi Community,

For Making the he connection or bus incidence  matrix  i use following
function

function [Ainc] = makeIncidence(bus, branch)
<http://www.pserc.cornell.edu/matpower/docs/ref/matpower5.0/extras/sdp_pf/makeIncidence.html#_subfunctions>

But i get following result

Undefined function or variable 'makeIncidence'.
Error in test1 (line 73)
[Ainc] = makeIncidence(cd.bus,cd.branch)


Regards
Saeed Ahmed