ucar.nc2.grid

Interface GridHorizCoordinateSystem

All Known Implementing Classes:

GridHorizCS, GridLatLon2D

public interface GridHorizCoordinateSystem

Manages Projection or Lat/Lon CoordinateSystem, assumed to be seperable; use of indices ok.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	GridHorizCoordinateSystem.CoordReturn Return value from findXYindexFromCoord().

Method Summary

Modifier and Type	Method and Description
Optional<GridHorizCoordinateSystem.CoordReturn>	findXYindexFromCoord(double xpt, double ypt) From the (x,y) projection point, find the indices and coordinates of the horizontal 2D grid.
ProjectionRect	getBoundingBox() Get horizontal bounding box in projection coordinates.
String	getGeoUnits() Get the horizontal coordinate units, null for latlon.
String	getHorizStaggerType() Horizontal staggering (currently based on WRF).
LatLonRect	getLatLonBoundingBox() Get horizontal bounding box in lat, lon coordinates.
Projection	getProjection() Get the horizontal Projection.
GridAxis1D	getXHorizAxis() Get the 1D X axis (either GeoX or Lon); null if LatLon2D
GridAxis1D	getYHorizAxis() Get the 1D Y axis (either GeoY or Lat); null if LatLon2D
boolean	isGlobalLon() Is this a global coverage over longitude ?
boolean	isLatLon() Does this use lat/lon horizontal axes?
boolean	isRegular() True if both X and Y axes are 1 dimensional and are regularly spaced.
List<GridAxis>	subset(GridSubset params, Formatter errlog) Subset both x and y axis based on the given parameters.

Method Detail

getXHorizAxis

@Nullable
GridAxis1D getXHorizAxis()

Get the 1D X axis (either GeoX or Lon); null if LatLon2D

getYHorizAxis

@Nullable
GridAxis1D getYHorizAxis()

Get the 1D Y axis (either GeoY or Lat); null if LatLon2D

isRegular

boolean isRegular()

True if both X and Y axes are 1 dimensional and are regularly spaced.

isLatLon

boolean isLatLon()

Does this use lat/lon horizontal axes?

isGlobalLon

boolean isGlobalLon()

Is this a global coverage over longitude ?

getLatLonBoundingBox

LatLonRect getLatLonBoundingBox()

Get horizontal bounding box in lat, lon coordinates. For projection, only an approximation based on corners.

getBoundingBox

ProjectionRect getBoundingBox()

Get horizontal bounding box in projection coordinates.

getProjection

Projection getProjection()

Get the horizontal Projection.

getGeoUnits

@Nullable
String getGeoUnits()

Get the horizontal coordinate units, null for latlon. Needed to convert projection units. TODO add to projection directly ??

getHorizStaggerType

String getHorizStaggerType()

Horizontal staggering (currently based on WRF).

findXYindexFromCoord

Optional<GridHorizCoordinateSystem.CoordReturn> findXYindexFromCoord(double xpt,
                                                                     double ypt)

From the (x,y) projection point, find the indices and coordinates of the horizontal 2D grid.

subset

List<GridAxis> subset(GridSubset params,
                      Formatter errlog)

Subset both x and y axis based on the given parameters.