Interpolate a value from 2nd list based on value from first list-CodePudding

Let's say I have these two lists:

u_deteminer = [0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0]
u_H = [0.368, 0.303, 0.301, 0.301, 0.301, 0.301, 0.301, 0.301, 0.301, 0.301]

I am given the value: 1.276819.

The value at each index in u_determiner maps out to a value in u_H (e.g. 0.2 maps to 0.368). Using the given value, I would like to interpolate a value for u_H. Suggestions?

CodePudding user response：

Numpy should make this easy.

import numpy as np
u_deteminer = [0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0]
u_H = [0.368, 0.303, 0.301, 0.301, 0.301, 0.301, 0.301, 0.301, 0.301, 0.301]
np.interp(2.5, u_deteminer, u_H)

Output

0.301