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特定矢量与网格化数据产品

查找区域的数据文件名；读取 VMAP0、GSHHG 和 AVHRR 数据

查找覆盖特定地理区域所需的数据文件名，并读取特定格式的数据文件。查找 DTED、GLOBE、GTOPO30 和 USGS DEM 数据的文件名。读取 AVHRR、VMAP0 和 GSHHG 数据。

函数

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dteds经纬度四边形区域的 DTED 文件名
globedemsGLOBE data file names for latitude-longitude quadrangle
gtopo30sGTOPO30 data file names for latitude-longitude quadrangle
usgsdemsUSGS 1-degree (3-arc-sec) DEM file names for latitude-longitude quadrangle

AVHRR

avhrrlambertRead AVHRR data product stored in eqaazim projection
avhrrgoodeRead AVHRR data product stored in Goode Projection

VMAP0

vmap0dataRead selected data from Vector Map Level 0
vmap0readRead Vector Map Level 0 file
vmap0rheadRead Vector Map Level 0 file headers
updategeostructConvert line or patch display structure to geostruct

GSHHG

gshhsRead Global Self-Consistent Hierarchical High-Resolution Geography (GSHHG) data

精选示例

Convert Coastline Data (GSHHG) to Shapefile Format

Convert Coastline Data (GSHHG) to Shapefile Format

Extract coastline data from the GSHHG data set, modify the data by merging polygons from different hierarchical levels, and save the results to a shapefile.