遥感影像数据
如果是原始的卫星影像,有可能是磁带存储的二进制格式,即*.bin。
如果是从地面站买到的数据,多半是Geo-Tiff的格式,即带有坐标的Tiff图。 如果是已经格式调整完成,等待分类、分析的影像,一般为*.img格式 Shapefile数据
1. shp存储几何要素的空间信息,即XY坐标 Shapefile文件用于描述几何体对象:点,折线与多边形。
2. shx存储了有关.shp存储的索引信息,即shp中空间数据的存储方式,XY坐标的输入点在哪里,有多少XY坐标对等信息
3. dbf存储地理数据的属性信息的dBase表 4. prj存储了文件的空间参考信息,如坐标系统等 5. shp.xml对元数据浏览后生成的xml元数据文件
6. sbn和sbx存储对shapefile的空间索引,加速空间数据的读取
7. Shapefile无法存储拓扑信息。在ESRI的文件格式中,ArcInfo 的Coverage、以及
Personal/File/Enterprise地理数据库,能够保存地理要素的拓扑信息。
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8. shp文件或.dbf文件最大的体积不能够超过2 GB(或2位)。也就是说,一个
shapefile最多只能够存储七千万个点坐标。
Coverage数据
1. aat弧段属性表,记录弧段的起点和终点坐标信息 2. adf为coverage格式,包括lab.adf、arc.adf、sec.adf、pal.adf、cnt.adf、tic.adf、lnk.adf、
bnd.adf都记录了坐标信息,arx.adf、pax.adf为索引文件和pat.adf、aat.adf为属性文件
3. pat点属性表,记录lable点的坐标信息 4. tic控制点,用于配准地图的点
5. aux保存栅格文件自身不能保存的辅助信息,包括彩色地图信息,直方图或表格,坐
标系统,变换信息,投影信息 6. rrd保存影像金字塔信息索引,加速显示和漫游 7. dat属性信息
8. nit属性表定义文件
9. dir属性表路径管理文件,用于关联dat和nit Geodatabase数据
图像格式转换
Arcmap的toollboxconversion tool
Arccatalog
adf - ARC/INFO coverage data file agf - Atlas GIS native binary geodataset file ain - attribute index file aih - attribute index file alg - ER Mapper algorithm
apr - ArcView Project File (ODB format) avl - legend template file (ODB format) avp - palette file (ODB format) ave - Avenue script
avx - ArcView extension file (ODB format) ai - Adobe Illlustrator picture file bat - DOS batch file
bil - image file (band interleaved by line) bip - image file (band interleaved by pixel) blw - world file for bil image
bmp - Windows bitmap image file bpw - world file for bip or bmp images bsq - image file (band sequential) bqw - world file for bsq image
c - C programming language source code filename cat - UNIX hyperhelp supporting file
cgm - Computer Graphics Metafile cls - geocoding classification file cnt - help file contents
dat - generic data file extension dat - INFO attribute file db - Object Database File (also ODB) dbf - dBASE tabular data file
dbf - Shapefile attribute table file dbg - problem debug log file dcp - default codepage file dct - geocoding dictionary file
dec - UNIX hyperhelp supporting file
def - defaults file (North Arrows, Layout Templates, etc) (ODB format) dem - Digital Elevation Model file dgn - Design drawing file (Intergraph) dir - INFO directory manager file dlg - Digital Line Graph file
dll - Windows Dynamic Link Library file
doc - MS-Word, MS-Wordpad document file dtd - UNIX hyperhelp supporting file dwg - Drawing file (AutoCAD) dxf - Drawing exchange file
e00 - ARC/INFO export file
ecw - ER Mapper Enhanced Compressed Wavelet
eps - Encapsulated PostScript
ers - ER Mapper raster file format exe - DOS/Windows executable file
fbn - spatial index file for read-only datasets fbx - spatial index file for read-only datasets fls - Windows help supporting file ftg - UNIX help supporting file fts - UNIX help supporting file
gen - ARC/INFO UnGenerate format gfw - world file for gif image
gif - image file (CompuServe)
hdr - header file (for ArcView extensions or TIF images) hlp - Windows help file
htm - WWW file (hypertext markup, 3-character DOS version) html- WWW file (hypertext markup language, UNIX version) ico - Icon file
idx - geocoding index for read-only datasets img - ERDAS Imagine image file ini - initialization file
ixc - geocoding index for read-write coverages ixs - geocoding index for read-write shapefiles jpg - image file (Joint Photographic Experts Group) key - geocoding matching keys (ODB format) lin - ARC/INFO lineset symbol file lnk - Windows shortcut icon link file mat - geocoding matching parameters file
mcp - image file (MacPaint)
mid - MapInfo interchange format (always paired with \"mif\") mif - MapInfo interchange format (always paired with \"mid\")
mrk - ARC/INFO markerset symbol file (not compatible w/ArcView) mxc - geocoding index for read-write coverages (ODB format) mxs - geocoding index for read-write shapefiles (ODB format) nit - INFO table definitions file ndx - fonts index file (UNIX only) nls - Codepage language files
odb - Object Database ASCII file (ODB format) pat - geocoding pattern recognition file
pdf - preferences definition file
pif - Windows program information file (for DOS programs) pps - processing set codes prj - projections definition file ps - PostScript. file
rlc - image file (run-length coding)
rs - image file (raster snapshot | Sun rasterfile)
sbn - spatial index for read-write shapefiles sbx - spatial index for read-write shapefiles shd - ARC/INFO shadeset symbol file shp - Shapefile (stores feature geometry) shx - Shapefile (stores file lookup index) stn - geocoding standardization file tab - lookup file
tbl - geocoding support table
tif - image file (Tag Image Format file) tfw - world file for tif image tmp - temporary file ttf - TrueType font file txt - text file (usually ASCII) xbm - image file (X Bitmap) wmf - image file (Windows Metafile) wld - world file for CAD datasets wri - Windows Write.exe file
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