Rasters

dem_type:dem_raster

USGS DEM raster features specify a matrix ofx, y,和zcoordinates. If known, the coordinate system will be specified.

Attribute Name	Contents
dem_file_name	这是一个字符串，指定光栅文件的基本名称。
dem_producer	这是一个字符串，指定数据的生成者。
dem_process_code	这是一个单字节整数，指定如何处理数据。范围：1…8 Default:8
dem U截面图	这个3字符字符串仅30分钟DEM，它标识1:100000比例的部分。
dem_origin_code	This is a 4-character string that specifies the mapping origin.
dem炱级\u代码	This is an integer defining the DEM level. FME will not determine or check the validity of this assertion. Level 1:7.5-minute or 30-minute DEM created by autocorrelaton or manual profiling from aerial photographs. Level 2:DEM created from digital line graph contours or equivalent, from any USGS map series up to 1:100,000 scale. Level 3:7.5-minute DEM created from a digital line graph that has vertically integrated with all categores of hypsography, hydrography, ridge line, break line, drain files, and all vertical and horizontal control networks. Level 4:电子成像传感器系统生成的DEM。范围：1-4 Default:1
dem_code_defining_elevation_pattern	This specifies the regularity of the elevation pattern. 范围：regular\|random Default:regular
dem_accuracy_code_for_ elevations	A number that specifies the existence of accuracy information for this dataset. 0 indicates unknown accuracy information. 范围：0\|1 Default:1
dem空间_ resolution_z	用于指定应用于z标注中高程值的比例的正实数。为编写器指定时，高程值将适当缩放。此值与dem_units; resolutions of 1 decimal place for feet and 2 decimals places for meters are permitted. Default:1
dem_units	The unit of measure for the z coordinate (the altitude). 范围：meters\|feet Default:No default
dem最大\u主_ contour_interval	对于级别2 DEM，此整数指定存在两个或多个主轮廓间隔时的最大主轮廓间隔。如果未向编写器提供此字段，则将留空。
dem最大\u主_ contour_interval_units	第2级DEM独有，这对应于最大主轮廓间隔的单位。如果未向编写器提供此字段，则将留空。范围：N.A.\|meters\|feet
dem最小\u主_ contour_interval	此整数是级别2 DEM唯一的，它指定最小或唯一的主轮廓间隔。如果未向编写器提供此字段，则将留空。
dem最小\u主_ contour_interval_units	Unique to level 2 DEMs, this corresponds to the units of the smallest primary contour interval. If this field is not provided to the writer, it will be left blank. 范围：N.A.\|meters\|feet
dem_data_source_date	This specifies the year that the original compilation data was formed. If this field is not provided to the writer, it will be left blank.
dem_data_inspection_and_revision_date	这指定完成日期或修订日期的年份。如果未向编写者提供此字段，则将使用当前年度。
dem_inspection_flag	This flag is blank if quality control has not been performed. Otherwise, it is flagged as “I” to indicate that all quality control processes are complete. If this field is not provided to the writer, it will be left blank.
dem_data_validation_flag	This single-digit integer specifies the type of data validation performed. 范围：0-5 Default:0
dem_suspect_and_void_ area_flag	This is a one-digit integer that indicates if the data contains void areas. If this field is not provided to the writer, it will be left blank. 范围：0-3
dem_data_edition	This is a four-digit integer specifying the data edition or version used. 范围：0…9999 Default:1
dem_percent_void	This is an integer equal to the percentage of nodes in the file set to void (-32767). This is only populated if thedem_data_edition字段表示无效。如果未向编写器提供此字段，则将留空。范围：0...100
dem_edge_match_flag_WEST	This integer flag specifies if edge-matching is required on the western edge of the raster. If this field is not provided to the writer, it will be left blank. 范围：1-4
dem_edge_match_flag_ NORTH	This integer flag specifies if edge-matching is required on the northern edge of the raster. If this field is not provided to the writer, it will be left blank. 范围：1-4
dem_edge_match_flag_EAST	This integer flag specifies if edge-matching is required on the eastern edge of the raster. If this field is not provided to the writer, it will be left blank. 范围：1-4
dem_edge_match_flag_ SOUTH	This integer flag specifies if edge-matching is required on the southern edge of the raster. If this field is not provided to the writer, it will be left blank. 范围：1-4
dem_U垂直_U基准点偏移	This number specifies the value to add to convert to NAVD88. If this field is not provided to the writer, it will be left blank.
file_datum_stats_avail	指示属性中统计信息可用性的代码'文件基准rmse_[x \| y \| z]'. 0 = unavailable, 1 = available 范围：0\|1 Default:No default
文件\u基准\u rmse\u x	RMSE of file’s datum relative to absolute datum (for the x-coordinate). 范围：0…999999 Default:No default
文件\u基准\u rmse\u y	文件基准相对于绝对基准的RMSE（对于y坐标）。范围：0…999999 Default:No default
文件\u基准\u rmse\u z	RMSE of file’s datum relative to absolute datum (for the z-coordinate). 范围：0…999999 Default:No default
file_datum_sample_size	Sample size on which statistics for attributes'文件基准rmse_[x \| y \| z]'are based. 范围：0…999999 Default:No default
dem_datum_stats_avail	指示属性中统计信息可用性的代码‘dem_datum_rmse_[x\|y\|z]’. 0 = unavailable, 1 = available 范围：0\|1 Default:No default
dem_U基准\u rmse\u x	相对于文件基准的DEM基准的RMSE（x坐标）。范围：0…999999 Default:No default
dem_U基准\u rmse\u y	RMSE of DEM datum relative to file’s datum (for the y-coordinate). 范围：0…999999 Default:No default
dem_U基准点\rmse\u z	RMSE of DEM datum relative to file’s datum (for the z-coordinate). 范围：0…999999 Default:No default
dem_datum_sample_size	Sample size on which statistics for attributes‘dem_datum_rmse_[x\|y\|z]’are based. 范围：0…999999 Default:No default