E3: To calculate 1-e^2*sen(lat)^2.

In diegoalarc/GeodesiCL: Geometric Geodesy Functions

To calculate 1-e^2*sen(lat)^2.

Description

To calculate the value for the function 1-e^2*sen(lat)^2.

Usage

E3(x, y, digits = 4)

Arguments

x	Selection of Ellipsoid.
y	Latitude in radians.
digits	Number of digits are rounded to. DEFAULT: 4

Value

value

Note

create data frame of epsg codes by epsg <- rgdal::make_EPSG()

References

https://github.com/OSGeo/PROJ & https://github.com/cran/rgdal

Examples

# Lat
g <- -33
m <- 38
s <- 30.123456

rad_lat <- radians(g, m, s)
print(rad_lat)

# To know the ellipsoids and the order open the Ellipsoids in the package
# and look for it number
Ellip <- Ellipsoids
#View(Ellip)

# We choose the number 5 which is GRS80
value <- E3(5, rad_lat, digits = 4)
print(value)

diegoalarc/GeodesiCL documentation built on July 24, 2022, 9:14 p.m.