SHGravGrid class

A class for global gridded gravitational field data.

Initialization

Initialization method	Description
`x = SHGravCoeffs.expand()`	Initialize using an SHGravCoeffs class instance.

Class attributes

Attribute	Description
`rad`	SHGrid class instance of the radial component of the gravitational acceleration evaluated on an ellipsoid.
`theta`	SHGrid class instance of the theta component of the gravitational acceleration evaluated on an ellipsoid.
`phi`	SHGrid class instance of the phi component of the gravitational acceleration evaluated on an ellipsoid.
`total`	SHGrid class instance of the total gravitational acceleration with the normal gravity removed on an ellipsoid.
`pot`	SHGrid class instance of the gravitational potential evaluated on an ellipsoid.
`gm`	Gravitational constant time the mass of the body.
`a`	Semimajor axis of the reference ellipsoid.
`f`	Flattening of the reference ellipsoid, f = (a - b) / a.
`omega`	Angular rotation rate of the body.
`normal_gravity`	True if the normal gravity is removed from the total gravitational acceleration.
`lmax`	The maximum spherical harmonic degree resolvable by the grids.
`lmax_calc`	The maximum spherical harmonic degree of the gravitational potential used in creating the grids.
`units`	The units of the gridded gravity data.
`pot_units`	The units of the gridded gravitational potential data.
`nlat`, `nlon`	The number of latitude and longitude bands in the grids.
`sampling`	The longitudinal sampling scheme of the grids: either 1 for `nlon` = `nlat` or 2 for `nlon` = 2 * `nlat`.
`epoch`	The epoch time of the gravity model.

Class methods

Method	Description
`plot()`	Plot all three components of the gravity field and the total gravity disturbance.
`plot_rad()`	Plot the radial component of the gravity field.
`plot_theta()`	Plot the theta component of the gravity field.
`plot_phi()`	Plot the phi component of the gravity field.
`plot_total()`	Plot the total gravity disturbance.
`plot_pot()`	Plot the gravitational potential.
`to_xarray()`	Return the gravity gridded data as an xarray DataSet.
`copy()`	Return a copy of the class instance.
`info()`	Print a summary of the data stored in the SHGravGrid instance.

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