Package org.geotools.imageio.netcdf

Class NetCDFImageIndexResolver

Object

NetCDFImageIndexResolver

public final class NetCDFImageIndexResolver
extends Object

Resolves a global image index into the owning variable and its logical non-spatial dimension indexes.

Example

Consider a dataset with two variables:

• surface_temperature with 3 time steps
• air_temperature with 3 time steps and 2 elevation levels

The resulting flattened image indexes could be:

 Index  Variable             Time index   Elevation index
 -------------------------------------------------------
   0    surface_temperature      0              -
   1    surface_temperature      1              -
   2    surface_temperature      2              -

   3    air_temperature          0              0
   4    air_temperature          0              1
   5    air_temperature          1              0
   6    air_temperature          1              1
   7    air_temperature          2              0
   8    air_temperature          2              1
 

Given a global image index, this resolver identifies:

• the corresponding variable (e.g. air_temperature)
• the logical indexes along non-spatial dimensions (e.g. time=1, elevation=0)

For example:

• index 1 -> surface_temperature, time=1
• index 6 -> air_temperature, time=1, elevation=1

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	NetCDFImageIndexResolver.Slice2DIndex	Represents the result of resolving a variable selection into index positions.

Constructor Summary

Constructors

Constructor	Description
NetCDFImageIndexResolver(List<VariableAdapter> variableAdapters)	Build the ImageIndexResolver on top of the available VariableAdapters, provided in the same order they get discovered from the originating NetCDF.

Method Summary

Modifier and Type	Method	Description
NetCDFImageIndexResolver.Slice2DIndex	resolve(int imageIndex)	Resolve a global imageIndex to the corresponding Variable and the underlying dimension indices.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NetCDFImageIndexResolver

public NetCDFImageIndexResolver(List<VariableAdapter> variableAdapters)

Build the ImageIndexResolver on top of the available VariableAdapters, provided in the same order they get discovered from the originating NetCDF.

Method Details

resolve

public NetCDFImageIndexResolver.Slice2DIndex resolve(int imageIndex)

Resolve a global imageIndex to the corresponding Variable and the underlying dimension indices.