TensoriaCalc does not display the correct output

Question

I am trying to use TensoriaCalc to calculate the components of the Ricci and the Riemann tensor of the following metric: $R^{2} \left(d\theta^{2} + \sin^{2}\left(\theta \right)d\phi^{2} \right)$;

According to the web guide, I should use this code:

Clear[i, j, R, \[Theta], g];
g["2Sphere"] = Metric[
  SubMinus[i], SubMinus[j],
  R^2 ({{1, 0},{0, Sin[\[Theta]]^2}}),
  CoordinateSystem -> {\[Theta], \[Phi]},
  TensorName -> "h",
  StartIndex -> 1,
   ChristoffelOperator -> FullSimplify,
   RiemannOperator -> FullSimplify,
   RicciOperator -> FullSimplify,
  RicciScalarOperator -> FullSimplify
   ]

and the output should be:

However, using the same code in my notebook, in Mathematica version 12.3, I have the following output:

which is not the result I was expecting.

Does anyone have any idea why this happens?

Answer 1

I'm one of the developers of this package. I'm glad to answer your question. When we develop the package, we set the Format of Metric, so that the output is shown like your Out[3] result. When you hover your mouse on h_ij, you can directly see the TensorComponent of the Metric. Using the function TensorComponent will also help extract it. Also, if you want to get what you expected instead of the formatted result, operate FullForm on your Metric. If you want to extract the other geometrical objects, try to use Functions: Christoffel, Riemann, Ricci, Einstein, and so on.