REgular Grid Linear Interpolator.
Project description
regli
REgular Grid Linear Interpolator, capable to deal with spectral library or similar model data.
author
Bo Zhang, bozhang@nao.cas.cn
home page
install
- for the latest stable version:
pip install regli
- for the latest github version:
pip install git+git://github.com/hypergravity/regli
test
from regli import test
test()
output:
regli.interp3 x 10000: 0.5675415992736816 sec
regli.interpn x 10000: 2.5326197147369385 sec
rgi x 10000: 5.4028871059417725 sec
doc
# import Regli
from regli import Regli
import numpy as np
# construct grid coordinates
x1 = np.linspace(-1, 1, 30)
x2 = np.linspace(-1, 1, 30)
x3 = np.linspace(-1, 1, 30)
# initiate regli using coordinates
regli = Regli(x1, x2, x3)
# an arbitrary function of coordinates (for demo)
f = lambda _x1, _x2, _x3: _x1 + _x2 + _x3
# regli.flats stores flattened coordinates of ND grid
flats = regli.flats
# evaluate your function on flats
values = np.array([f(*_) for _ in flats]).reshape(-1, 1)
# set values for regli
regli.set_values(values)
regli(pos) # use any of the 3 ways to interpolate
regli.interpn(pos) # method 1 is equivalent to 2
regli.interp3(pos) # this is accelerated for 3D
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