Specific Vector and Gridded Data Products

Find data file names for a region; read VMAP0, GSHHG, and AVHRR data

Find data file names required to cover a geographic region and read data files in certain formats. Find file names for DTED, GLOBE, GTOPO30, and USGS DEM data. Read AVHRR, VMAP0, and GSHHG data.

Functions

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Data File Names

`dteds`	DTED file names for latitude-longitude quadrangle
`globedems`	GLOBE data file names for latitude-longitude quadrangle
`gtopo30s`	GTOPO30 data file names for latitude-longitude quadrangle
`usgsdems`	USGS 1-degree (3-arc-sec) DEM file names for latitude-longitude quadrangle

AVHRR, VMAP0, and GSHHG Data

AVHRR

`avhrrlambert`	Read AVHRR data product stored in `eqaazim` projection
`avhrrgoode`	Read AVHRR data product stored in Goode Projection

VMAP0

`vmap0data`	Read selected data from Vector Map Level 0
`vmap0read`	Read Vector Map Level 0 file
`vmap0rhead`	Read Vector Map Level 0 file headers
`updategeostruct`	Convert line or patch display structure to geostruct

GSHHG

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

Topics

Sources of Terrain Data
United States mapping agencies provide terrain elevation data in the form of data grids. Some data files are published at multiple resolutions.

Featured Examples

Converting Coastline Data (GSHHG) to Shapefile Format

Extract coastline data from the GSHHG data set, extract levels as polygons for map display, and save the results to a shapefile.

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