列出有关给定SRS数量的信息（WKT，PROJ.4等）
~#~# 概要
```
Usage: gdalsrsinfo [options] srs_def
srs_def可以是从中提取SRS信息的GDAL / OGR支持的数据集的文件名
或任何通常的GDAL / OGR表格（完整的WKT，PROJ.4，EPSG：n或包含SRS的文件）
Options:
[~-~-help-general] [-h] 显示帮助并退出
[-p] 漂亮打印（如WKT）
[-V] 验证SRS
[-o out_type] 输出类型 { default, all, wkt_all, proj4,
wkt, wkt_simple, wkt_noct, wkt_esri,
mapinfo, xml }
```
~#~# 描述
gdalsrsinfo实用程序从以下之一报告有关SRS的信息：
~* 包含SRS信息的GDAL / OGR支持的数据集的文件名
~* 任何通常的GDAL / OGR表格（完整的WKT，PROJ.4，EPSG：n或包含SRS的文件）
输出类型：
~* default proj4和wkt（默认选项）
~* all 所有选项都可用
~* wkt_all 所有wkt选项可用
~* proj4 PROJ.4字符串
~* wkt OGC WKT格式（全）
~* wkt_simple OGC WKT（简化）
~* wkt_noct OGC WKT（不含OGC CT参数）
~* wkt_esri ESRI WKT格式
~* mapinfo Mapinfo样式的CoordSys格式
~* xml XML格式（基于GML）
~#~# 示例
```
$ gdalsrsinfo "EPSG:4326"
PROJ.4 : '+proj=longlat +datum=WGS84 +no_defs '
OGC WKT :
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]]
```
```
$ gdalsrsinfo -o proj4 osr/data/lcc_esri.prj
'+proj=lcc +lat_1=34.33333333333334 +lat_2=36.16666666666666
+lat_0=33.75 +lon_0=-79 +x_0=609601.22 +y_0=0 +datum=NAD83 +units=m +no_defs '
```
```
$ gdalsrsinfo -o wkt -p "EPSG:32722"
PROJCS["WGS 84 / UTM zone 22S",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-51],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",10000000],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AXIS["Easting",EAST],
AXIS["Northing",NORTH],
AUTHORITY["EPSG","32722"]]
```
```
$ gdalsrsinfo -o wkt_all "EPSG:4618"
OGC WKT :
GEOGCS["SAD69",
DATUM["South_American_Datum_1969",
SPHEROID["GRS 1967 Modified",6378160,298.25,
AUTHORITY["EPSG","7050"]],
TOWGS84[-57,1,-41,0,0,0,0],
AUTHORITY["EPSG","6618"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4618"]]
OGC WKT (simple) :
GEOGCS["SAD69",
DATUM["South_American_Datum_1969",
SPHEROID["GRS 1967 Modified",6378160,298.25],
TOWGS84[-57,1,-41,0,0,0,0]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]]
OGC WKT (no CT) :
GEOGCS["SAD69",
DATUM["South_American_Datum_1969",
SPHEROID["GRS 1967 Modified",6378160,298.25]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]]
ESRI WKT :
GEOGCS["SAD69",
DATUM["D_South_American_1969",
SPHEROID["GRS_1967_Truncated",6378160,298.25]],
PRIMEM["Greenwich",0],
UNIT["Degree",0.017453292519943295]]
```