util

General use functions

orthopoly.util.isnum(x)

Tests if an object is float-able (a number)

Parameters:

x – some object

Returns:

True or False

orthopoly.util.xhat2x(xhat, a, b)

Converts \(\hat{x}\) coordinates in \([-1,1]\) to \(x\) coordinates in \([x_a,x_b]\)

orthopoly.util.x2xhat(x, a, b)

Converts \(x\) coordinates in \([x_a,x_b]\) to \(\hat{x}\) coordinates in \([-1,1]\)

orthopoly.util.xhat2theta(xhat)

Converts \(\hat{x}\) coordinates in \([-1,1]\) to \(\theta\) coordinates \([\pi,0]\)

orthopoly.util.theta2xhat(xhat)

Converts \(\theta\) coordinates in \([\pi,0]\) to \(\hat{x}\) coordinates in \([-1,1]\)