def match_kdtree_catalog(wcs, catfn):
from astrometry.libkd.spherematch import (
tree_open,
tree_close,
tree_build_radec,
tree_free,
trees_match,
tree_permute,
)
from astrometry.libkd import spherematch_c
from astrometry.util.starutil_numpy import deg2dist, xyztoradec
import numpy as np
import sys
rc, dc = wcs.get_center()
rr = wcs.get_radius()
kd = tree_open(catfn)
kd2 = tree_build_radec(np.array([rc]), np.array([dc]))
r = deg2dist(rr)
I, J, nil = trees_match(kd, kd2, r, permuted=False)
# HACK
# I2,J,d = trees_match(kd, kd2, r)
xyz = spherematch_c.kdtree_get_positions(kd, I.astype(np.uint32))
# print 'I', I
I2 = tree_permute(kd, I)
# print 'I2', I2
tree_free(kd2)
tree_close(kd)
tra, tdec = xyztoradec(xyz)
return tra, tdec, I2
def match_kdtree_catalog(wcs, catfn):
from astrometry.libkd.spherematch import tree_open, tree_close, tree_build_radec, tree_free, trees_match, tree_permute
from astrometry.libkd import spherematch_c
from astrometry.util.starutil_numpy import deg2dist, xyztoradec
import numpy as np
import sys
rc, dc = wcs.get_center()
rr = wcs.get_radius()
kd = tree_open(catfn)
kd2 = tree_build_radec(np.array([rc]), np.array([dc]))
r = deg2dist(rr)
I, J, nil = trees_match(kd, kd2, r, permuted=False)
# HACK
#I2,J,d = trees_match(kd, kd2, r)
xyz = spherematch_c.kdtree_get_positions(kd, I.astype(np.uint32))
#print 'I', I
I2 = tree_permute(kd, I)
#print 'I2', I2
tree_free(kd2)
tree_close(kd)
tra, tdec = xyztoradec(xyz)
return tra, tdec, I2
kd2 = spherematch.tree_build(x2)
I,J,d = spherematch.trees_match(kd, kd2, 1.)
print('trees_match:', len(I), 'matches')
I,J,d = spherematch.trees_match(kd, kd2, 1., nearest=True)
print('trees_match:', len(I), 'matches (nearest)')
print('Kd bounding-box:', spherematch.tree_bbox(kd))
print('Kd bounding-box:', kd.bbox)
print('Kd data:', spherematch.tree_data(kd, np.array([0,3,5]).astype(np.uint32)))
print('Kd data:', kd.get_data(np.array([0,3,5]).astype(np.uint32)))
print('Permute:', spherematch.tree_permute(kd, np.array([3,5,7]).astype(np.int32)))
print('Permute:', kd.permute(np.array([0,99,199]).astype(np.int32)))
ra,dec = np.meshgrid(np.arange(0, 360), np.arange(-90, 91, 1))
ra1 = ra.ravel()
dec1 = dec.ravel()
rdkd1 = spherematch.tree_build_radec(ra1, dec1)
print('RdKd:', rdkd1.n, rdkd1.bbox)
ra2 = np.random.uniform(-10, 10, size=1000)
dec2 = np.random.uniform(-10, 10, size=1000)
rdkd2 = spherematch.tree_build_radec(ra2, dec2)
I = spherematch.tree_search_radec(rdkd1, ra2[0], dec2[0], 2.)
print('search_radec:', I)
kd2 = spherematch.tree_build(x2)
I,J,d = spherematch.trees_match(kd, kd2, 1.)
print('trees_match:', len(I), 'matches')
I,J,d = spherematch.trees_match(kd, kd2, 1., nearest=True)
print('trees_match:', len(I), 'matches (nearest)')
print('Kd bounding-box:', spherematch.tree_bbox(kd))
print('Kd bounding-box:', kd.bbox)
print('Kd data:', spherematch.tree_data(kd, np.array([0,3,5]).astype(np.uint32)))
print('Kd data:', kd.get_data(np.array([0,3,5]).astype(np.uint32)))
print('Permute:', spherematch.tree_permute(kd, np.array([3,5,7]).astype(np.int32)))
print('Permute:', kd.permute(np.array([0,99,199]).astype(np.int32)))
ra,dec = np.meshgrid(np.arange(0, 360), np.arange(-90, 91, 1))
ra1 = ra.ravel()
dec1 = dec.ravel()
rdkd1 = spherematch.tree_build_radec(ra1, dec1)
print('RdKd:', rdkd1.n, rdkd1.bbox)
ra2 = np.random.uniform(-10, 10, size=1000)
dec2 = np.random.uniform(-10, 10, size=1000)
rdkd2 = spherematch.tree_build_radec(ra2, dec2)
I = spherematch.tree_search_radec(rdkd1, ra2[0], dec2[0], 2.)
print('search_radec:', I)