TILE

Description

TILE creates multiple subset files, or tiles, from an input file, or from selected layers within a file.

Parameters

Name	Type	Length	Value range
InputLayer: Input raster channels	Raster port	0 - 1024
Tile Output File *	String	1 -
Tile Format	String	0 - 1	Default: PIX
Tile Method	String	0 - 1	SZOVLP | NUMOVLP Default: SZOVLP
Units	String	0 - 1	Geocoded, Pixel Default: Geocoded
Tile Size	Integer	0 - 1024
Overlap	Float	0 - 1024	Default: 0,0
Number of Tiles *	Integer	1 - 2
Overhanging Tiles	String	0 - 1
Initialization Value	Float	0 - 1
Set as NoData value	String	0 - 1	Y | N Default: N

* Required parameter

Parameter descriptions

InputLayer: Input raster channels

The channel or channels in the input file to partition into tiles.

You cannot specify duplicate channels.

Tile Output File

The prefix to use for the file name of each output tile. The tile number will be appended to the prefix you specify.

For example, if the value of this parameter is "/data/tiles/demo", the output GeoTIFF file holding the tile at row 2, column 3 would be named "/data/tiles/demo2_3.tif".

Tile Format

The format, or file name extension, of the output file.

The default value is PIX.

For a complete list of GDB-recognized file types, see GDB-supported file formats.

Tile Method

The tiling method to determine the number and size of tiles to create.

Units

The units to use with the Tile Size (TILESIZE) and Overlap (TILEOVLP) parameters. Geocoded units are defined by the projection; for example, meters or feet.

Tile Size

The size of the tile in x and y dimensions, in the units of the Units (TILEUNIT) parameter. This parameter is mandatory when you specify Use tile size and overlap (SZOVLP) for the Tile Method (TILEMETH) parameter.

Overlap

The amount of overlap, in x and y dimensions, to apply to each adjacent tile, in the units of the Units (TILEUNIT) parameter. The default is no overlap.

Number of Tiles

The number of tiles to create, in x and y direction.

For example, a value of 4,4 indicates four tiles across and four tiles down

This parameter is mandatory when you specify Use Number of Tiles and Overlap (NUMOVLP) for the Tile Method (TILEMETH) parameter.

Overhanging Tiles

An overhanging tile refers to the portion of a tile that lies outside the tile size you specify. If an image has tiles outside the specified tile size, the overhang is displayed so that none of the image is lost. You need only specify a value for this parameter when you specify Use tile size and overlap (SZOVLP) for the Tile Method (TILEMETH) parameter.

Initialization Value

The initialization value for the raster output. The full extent of the output rasters will be initialized to this value before the clipped data is written to them.

Acceptable values include any coordinate value in the projection system of the data. The default value is 0.0.

You need only specify a value for this parameter when you specify FULL for the Overhanging Tiles (OVRTILES) parameter.

Set as NoData value

To use the value of the Initialization Value parameter as the NoData pixel value in the image metadata, select this check box. You need only specify a value for this parameter when you select Full Tiles in the Overhanging Tiles list.

Details

From the input file, TILE can create a subset of many tiles by using one of two tiling methods: tile size and overlap, or number of tiles and overlap. Raster, vector, and bitmap layers are clipped to the tile boundary, whereas other segment data types, such as, PCTs, LUTs, ORBs, and so on are transferred to the resultant tiles only.