Feature Representation
In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Attributes), this format adds the format-specific attributes described in this section.
NGrid features specify a matrix of x, y, and z coordinates.
Attribute Name |
Contents |
ngrid_type |
This will always be |
ngrid_rasterID |
A number that specifies the identification number for each raster. |
ngrid_tableName |
A string that specifies the name of the MapInfo TAB header file associated with each raster file. |
ngrid_coordSys This attribute has been deprecated. |
A string that specifies the MapInfo CoordSys coordinate system of each raster. |
ngrid_coordSysName This attribute has been deprecated. |
A string that specifies the CoordSys Name as seen in a MapInfo CoordSys string. |
ngrid_rasterDesc |
A string that specifies a description of the raster and its data. |
ngrid_XYUnitName This attribute has been deprecated. |
A string that specifies the name for the type of units used in the X and Y dimensions of the raster. Range: Any valid MapInfo coordinate string unit name |
ngrid_coordUnits This attribute has been deprecated. |
A number that specifies the units used in the X and Y dimensions of the raster, stored as a MapInfo unit value. Range:
|
ngrid_rasterVersion |
A number that specifies the current version of each NGrid raster. Default: 2.0 |
ngrid_displayStatus |
A number whose bits specify the display properties of each raster. Range: One byte Default: 0 |
ngrid_datatype |
Specifies the data type for surface (non-paletted) NGrid files. The REAL16 data type is less precise but may have better compatibility with viewing applications. Range: Default: |
ngrid_reserve1 |
A reserved value. |
ngrid_reserve2 |
A reserved value. |
ngrid_rasterModified |
A number that specifies whether the raster has been modified. Range: 0|1 Default: 0 |
ngrid_colorStructures |
A number that specifies a pointer to the color structures in the NGrid raster handler. Default: 0 |
ngrid_GRDZMin |
A number that specifies the minimum value for the elevation data in each raster. (Valid only for continuous rasters) |
ngrid_GRDZMax |
A number that specifies the maximum value for the elevation data in each raster. (Valid only for continuous rasters) |
ngrid_GRDZUnitType |
A number that specifies the unit type of the coordinate system of the Z dimension of each raster. (Valid only for continuous rasters) |
ngrid_GRDZUnits |
A string that specifies the name of the coordinate system name of the Z dimension of each raster. (Valid only for continuous rasters) |
ngrid_GRDlightAzimuth |
A number that specifies the azimuth of light for each raster. (Valid only for continuous rasters) Range: Any real number between 0 and 360 |
ngrid_GRDlightAngle |
A number that specifies the angle of light for each raster. (Valid only for continuous rasters) Range: Any real number between 0 and 360 |
ngrid_GRDoptFlag |
A number whose bits specify the continuous raster options. (Valid only for continuous rasters) Range: One byte |
ngrid_GRDoptMask |
A number whose bits specify the a mask for the Range: One byte |
ngrid_GRDHSBrightness |
A number that specifies the brightness of hill-shading for each raster. (Valid only for continuous rasters) Range: 0 to 255 |
ngrid_GRDHSContrast |
A number that specifies the contrast of hill-shading for each raster. (Valid only for continuous rasters) Range: 0 to 255 |
ngrid_GRDnumInflectPts |
A number that specifies how many valid inflection points there are for each raster. (Valid only for continuous rasters) Range: 0 to 64 |
ngrid_InflectionPt_ZValue |
A number that specifies the Z dimension value (elevation) of the inflection points of each raster. (Valid only for continuous rasters) Range: Between |
ngrid_InflectionPt_Red |
A number that specifies the red component of the color of the inflection points of each raster. (Valid only for continuous rasters) Range: 0 to 255 |
ngrid_InflectionPt_Green |
A number that specifies the green component of the color of the inflection points of each raster. (Valid only for continuous rasters) Range: 0 to 255 |
ngrid_InflectionPt_Blue |
A number that specifies the blue component of the color of the inflection points of each raster. (Valid only for continuous rasters) Range: 0 to 255 |
ngrid_HistZMin |
A number that specifies the minimum value in the Z dimension (elevation) of the histogram for each raster. (Valid only for continuous rasters) |
ngrid_HistZMax |
A number that specifies the maximum value in the Z dimension (elevation) of the histogram for each raster. (Valid only for continuous rasters) |
ngrid_HistNumNonNull |
A number that specifies the number of Z dimension values (elevations) in each raster that are not null values. (Valid only for continuous rasters) Range: 0 up to the total number of raster elements |
ngrid_HistNumValues |
A number that specifies the number of values in the histogram for each raster. (Valid only for continuous rasters) Range: 0 to 65536 |
ngrid_HistData |
A number that specifies a pointer to values in the histogram for each raster. (Valid only for continuous rasters) |