Can I use Cartographica to calculate network connectivity?

Greetings,

I am trying to figure out the proportion of spaces within a half mile radius of a point that are actually accessible within a half mile of walking from that point.

For this calculation, walking is defined to occur only along sidewalks that are connected to the origin point.  I would like to know if Cartographica currently includes tools that may help me complete this calculation.

Thanks,

Antonio