appropriate radius in new 20K locations

[lucywowen]

Should we change the radius now that we've up-sampled our full set of locations.

[jeremymanning]

we'll need to explore this...it really depends on how the reconstructions look. we should probably at least try radii of 10 and 20.

[andrewheusser]

we could support 1) multiple default models with different radii and 2) allow user to specify the radius when creating a new model. this will be implemented in a later release