S57系列¶
也被称为S57。IHO S-57格式是用于海图的矢量交换格式。它是由国际水文学组织(IHO)开发的。欲了解更多有关国际移民组织的信息,请访问:https://iho.int/
文件列表¶
每个S57数据文件的扩展名为*.000。例如:
US1BS02M.000
数据访问/连接方法¶
通过OGR访问MapServer中的S57 S57 driver 。
连接型OGR 必须指定。
指定从SHAPEPATH到.000文件的完整路径或相对路径 CONNECTION
使用Data参数指定S57图层名
特别注释¶
在MapServer中读取S57数据时,底层OGR代码需要GDAL/OGR安装中的两个文件: s57objectclasses.csv 和 s57attributes.csv 。这些文件位于/GDAL/Data/文件夹(Unix: /usr/local/share/gdal 窗口: /ms4w/gdaldata )。如果在MapServer中收到错误,如:
msDrawMap(): Image handling error. Failed to draw layer named 's57'.
msOGRFileOpen(): OGR error. xxx failed for OGR connection
您可能需要使用映射文件主部分中的config参数将mapserver指向这些文件:
CONFIG GDAL_DATA "C:\ms4w\gdaldata"
Ogrinfo示例¶
在S57文件上使用ogrinfo获取层名:
> ogrinfo us1bs02m.000
ERROR 4: S57 Driver doesn't support update.
Had to open data source read-only.
INFO: Open of `us1bs02m.000'
using driver `IHO S-57 (ENC)' successful.
1: ADMARE (Polygon)
2: CBLSUB (Line String)
3: CTNARE
4: COALNE (Line String)
5: DEPARE
6: DEPCNT (Line String)
7: LNDARE
8: LNDELV
9: LNDRGN
10: LNDMRK
11: LIGHTS (Point)
12: OBSTRN
13: RDOSTA (Point)
14: SEAARE
15: SBDARE
16: SLCONS
17: SOUNDG (Multi Point)
18: UWTROC (Point)
19: WATTUR
20: WRECKS
21: M_COVR (Polygon)
22: M_NPUB (Polygon)
23: M_NSYS (Polygon)
24: M_QUAL (Polygon)
25: C_ASSO (None)
使用ogrinfo检查S57层的结构:
> ogrinfo us1bs02m.000 DEPARE -summary
ERROR 4: S57 Driver doesn't support update.
Had to open data source read-only.
INFO: Open of `us1bs02m.000'
using driver `IHO S-57 (ENC)' successful.
Layer name: DEPARE
Geometry: Unknown (any)
Feature Count: 297
Extent: (165.666667, 48.500000) - (180.000000, 60.750000)
Layer SRS WKT:
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]]
GRUP: Integer (3.0)
OBJL: Integer (5.0)
RVER: Integer (3.0)
AGEN: Integer (2.0)
FIDN: Integer (10.0)
FIDS: Integer (5.0)
LNAM: String (16.0)
LNAM_REFS: StringList (16.0)
DRVAL1: Real (0.0)
DRVAL2: Real (0.0)
QUASOU: String (0.0)
SOUACC: Real (0.0)
VERDAT: Integer (0.0)
INFORM: String (0.0)
NINFOM: String (0.0)
NTXTDS: String (0.0)
SCAMAX: Integer (0.0)
SCAMIN: Integer (0.0)
TXTDSC: String (0.0)
RECDAT: String (0.0)
RECIND: String (0.0)
...
映射文件示例:
LAYER
NAME "s57"
TYPE POLYGON
STATUS ON
CONNECTIONTYPE OGR
CONNECTION "./s57/us1bs02m.000"
DATA "DEPARE"
CLASS
STYLE
COLOR 247 237 219
OUTLINECOLOR 120 120 120
END #style
END #class
END #layer