# GRtensorII:maple users help needed

1. Nov 16, 2004

### anigma

Hello.
I found the GRtensor package very handy in tensor calculus.
However while doing coordinate transformation to the metric is a piece of cake, I have now idea how to transform a general tensor (for example T(mu,nu) or whatever).
there must be a way (an easy one) to do this. please advise.
thanks,
anigma.

2. Dec 6, 2004

### anigma

no one answered but over a hundred people read my message so I thought I write down the somewhat messy solution I found:
1. define new metric which identical to the tensor to be transformed.
this is easily done using grnewmetric(...);
2. transform the new metric using grtransform(...)
3. define and calc the tensor eq: Tnew{a b}:=gnew{a b}
hope it helps somebody.
anigma.