Use index in anonymous function

Hi guys

can i include index in anonymous function for example something like this where T is matrix element. And can i call it in for loop for example:

syms T n m
delta_x=(1/50);delta_t=0.001;
x=0:delta_x:1;
t=0:delta_t:0.25;
Lamda=((delta_t)/((delta_x)^2));

n=1:length(t);m=2:length(x);k=1;

Tem=@(T,n,m)((-Lamda*T(n+1,m-1))+(2*(1+Lamda)*T(n+1,m))-(Lamda*T(n+1,m+1)))....
       -((Lamda*T(n,m-1))   +(2*(1-Lamda)*T(n,m))  +(Lamda*T(n,m+1))); 
for n=1:length(t)-1
    for m=2:length(x)
         if n==1
         T(n,m)=250;
        elseif m==1 && n>=2
                T(n,m)=350;

          else         

      Temp{1}=Tem(T,n,m); % I want to generate several equations from thie line 
           end
      end 
  end

Best Regards,

Answer 1

[Walter Roberson]

Yes, it is legal to index a symbol in an anonymous function. It is recommended, however, to initialize the symbol as a matrix.

e.g.,

A = sym('A',dim)

where

dim: Integer or vector of two integers specifying dimensions of A. For example, if dim is a vector [m n], then the syntax A = sym('A',[m n]) creates an m-by-n matrix of symbolic variables. If dim is an integer n, then the syntax A = sym('A',n) creates a square n-by-n matrix of symbolic variables.