galpy.df.quasiisothermaldf.sampleV_interpolate¶
-
quasiisothermaldf.
sampleV_interpolate
(R, z, R_pixel, z_pixel, num_std=3, R_min=None, R_max=None, z_max=None, **kwargs)¶ NAME:
sampleV_interpolatePURPOSE:
Given an array of R and z coordinates of stars, return the positions and their radial, azimuthal, and vertical velocity.INPUT:
R - array of Galactocentric distance (can be Quantity)
z - array of height (can be Quantity)
- R_pixel, z_pixel= the pixel size for creating the grid for
- interpolation (in natural unit)
- num_std= number of standard deviation to be considered outliers
- sampled separately from interpolation
R_min, R_max, z_max= optional edges of the grid
OUTPUT:
- coord_v= a numpy array containing the sampled velocity, (vR, vT, vz),
- where each row correspond to the row of (R,z)
HISTORY:
2018-08-10 - Written - Samuel Wong (University of Toronto)