derivative: First derivative for the function and value given
In Susarro/arqastwb: Archaeoastronomy algorithms

First derivative for the function and value given

1	derivative(fnc, x, incrx = 0.01)

`fnc`	Function
`x`	Value in which the derivative should be calculated
`incrx`	increment in x to calculate the derivative

derivative value at the value given

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fnc<-function(x) apparent_equatorial_position(x,"sun")$declination
x <- str2jd("2014-03-08")
derivative(fnc,x)

Susarro/arqastwb documentation built on May 21, 2019, 10:28 a.m.

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