radii.c File Reference
#include <grass/gis.h>
#include "pi.h"
Go to the source code of this file.
Function Documentation
double G_meridional_radius_of_curvature |
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double |
lon, |
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double |
a, |
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double |
e2 | |
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meridional radius of curvature
Returns the meridional radius of curvature at a given longitude: 
- Parameters:
-
- Returns:
- double
Definition at line 74 of file radii.c.
References Radians, sin(), and sqrt().
double G_radius_of_conformal_tangent_sphere |
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double |
lon, |
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double |
a, |
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double |
e2 | |
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) |
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radius of conformal tangent sphere
Returns the radius of the conformal sphere tangent to ellipsoid at a given longitude: 
- Parameters:
-
- Returns:
- double
Definition at line 135 of file radii.c.
References Radians, sin(), and sqrt().
double G_transverse_radius_of_curvature |
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double |
lon, |
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double |
a, |
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double |
e2 | |
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) |
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transverse radius of curvature
Returns the transverse radius of curvature at a given longitude: 
- Parameters:
-
- Returns:
- double
Definition at line 105 of file radii.c.
References Radians, sin(), and sqrt().