spacepy.toolbox.intsolve¶
-
spacepy.toolbox.
intsolve
(func, value, start=None, stop=None, maxit=1000)[source]¶ Find the function input such that definite integral is desired value.
Given a function, integrate from an (optional) start point until the integral reached a desired value, and return the end point of the integration.
Parameters: func : callable
function to integrate, must take single parameter
value : float
desired final value of the integral
start : float (optional)
value at which to start integration, default -Infinity
stop : float (optional)
value at which to stop integration, default +Infinity
maxit : integer
maximum number of iterations
Returns: out : float
x such that the integral of L{func} from L{start} to x is L{value}
Note: Assumes func is everywhere positive, otherwise solution may
be multi-valued.