I am geting error message $"$ Array indices must be positive integers or logical values.

MMCQ $($line $944)$

pN $=$ p$\_$state$($Nwait $+1)$;$.$ How can I correct it to show that Nwait includes all callers in the queue and being served as well $\%$ The following code is to aid in solving the decision tree problem.

function $[$A$,$B$,$ idMap$]=$ ArrangeMatrix$($P$)$

$\%$ Partitions the matrix P in the following form

$\%$ P $=|$ A B $|$

$\%|0$ I $|$

$\%$ by re$-$arranging the matrix P to put all the absorbing states in the bottom right corner.

$\%$ INPUTS:

$\%$ P $=$ Markov chain matrix

$\%$ OUTPUTS:

$\%$ A $=$ Matrix

$\%$ B $=$ Matrix

$\%$ idMap $=$ Mapping of old state # to new state #

Pstar $=$ P;

toRowCol $=$ length$($P$)$; $\%$ Where to put the next absorp state

stateID $=1$:toRowCol;

$\%$ Determine if there are any absorbing states

$[$nrows$,$ncols$]=$ find$($Pstar $==1)$;

while $($~isempty$($nrows$))$

$\%$ Get the state to move

nrow $=$ nrows$(1)$;

ncol $=$ ncols$(1)$;

$\%$ Swap Row

tempcol $=$ Pstar$($ncol$,$:$)$;

Pstar$($ncol$,$:$)=$ Pstar$($toRowCol$,$:$)$;

Pstar$($toRowCol$,$:$)=$ tempcol;

$\%$ Swap column

temprow $=$ Pstar$($:$,$nrow$)$;

Pstar$($:$,$nrow$)=$ Pstar$($:$,$toRowCol$)$;

Pstar$($:$,$toRowCol$)=$ temprow;

$\%$ Swap the state IDs

temp $=$ stateID$($toRowCol$)$;

stateID$($toRowCol$)=$ stateID$($nrow$)$;

stateID$($nrow$)=$ temp;

$\%$ Decrement row$/$column destination

toRowCol $=$ toRowCol $-1$;

$\%$ Find the next one to move

$[$nrows$,$ncols$]=$ find$($Pstar$(1$:toRowCol,$1$:toRowCol$)==1)$;

end

$\%$ Get the sub$-$matries

A $=$ Pstar$(1$:toRowCol,$1$:toRowCol$)$;

B $=$ Pstar$(1$:toRowCol,toRowCol$+1$:end$)$;

idMap $=$ stateID;

end

$\%$ Define the erlang function

function B $=$ erlangb$($N$,$ A$)$

if $($length$($N$)$~$=1)|($fix$($N$)$ ~$=$ N$)|($N $<0)$

error$(\text{'}$N must be a scalar positive integer'$)$;

end

$\%$ TODO: test that elements of A are real and positive here?

esum $=$ zeros$($size$($A$))$;

for ii$=0$:N

esum $=$ esum $+$ A $.^$ ii $./$ factorial$($ii$)$;

end

B $=$ A $.^$ N $./($factorial$($N$).*$ esum$)$;

end