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) |