Documentation Center

  • Trial Software
  • Product Updates

globedems

GLOBE data filenames for latitude-longitude quadrangle

Syntax

tileNames = globedems(latlim,lonlim)
tileNames = globedems(lat,lon)

Description

tileNames = globedems(latlim,lonlim) returns a cell array of the tile names covering the geographic region for GLOBEDEM digital elevation maps. The region is specified by two-element vectors of latitude and longitude limits in units of degrees.

tileNames = globedems(lat,lon) returns a cell array of the tile names covering the geographic region for GLOBEDEM digital elevation maps. The region is specified by scalar latitude and longitude points, in units of degrees.

Background

GLOBE, the Global Land One-km Base Elevation data, was compiled by the National Geophysical Data Center from more than 10 different sources of gridded elevation data. The data set consists of 16 tiles, each covering 50 by 90 degrees. Determining which tiles are needed to cover a particular region generally requires consulting an index map. This function takes the place of such a reference by returning the file names for a given geographic region.

Examples

Which tiles are needed for southern Louisiana?

latlim =[28.61 31.31];
lonlim = [-91.24 -88.62];
globedems(latlim,lonlim)

ans = 
    'e10g'
    'f10g'

More About

expand all

Tips

The globedems function reads data from the format GLOBE Version 1.0. globedem first reads the corresponding ESRI header file found in the subdirectory '/esri/hdr/' and then the binary data file (with no extension).

See Also

Was this topic helpful?