otp_surface: Evaluate a surface against a pointset
Description
Evaluate a surface created with `otp_make_surface` against a pointset made
with `otp_pointset` to get travel times and statitics from the analysit in
OTP 1.x
Logical, should data be returned or just travel times.
ncores
Integer, number of cores to use
Details
THis function requires the analysis and pointset features to be
enabled during `otp_setup()`. Thus it will only work with OTP 1.x. For more
detail see the analyst vignette.