Is there any SKILL function to calculate pattern density?

Hi experts,

   I failed to find a SKILL function to calculate pattern density, all I found is to use "Routing IDE" to do this.

But

     <1.> Is there any function to calculate pattern density in SKILL directly?

     <2.> If there is no SKILL function to do this, how to wrap the check_density command in Routing IDE into SKILL that could make the calculation a automation?