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资源说明：This readme file contains information on the ETOPO1 binary grid formats.
ETOPO1 comes in two different binary formats: 2-byte/16-bit integer (i2) and
4-byte/32-bit float (f4); float refers to the file format, not the elevation values in the
grids, which have been rounded to whole integers for all versions.
Each zip file contains the binary grid and an associated header file that describes
the grid format.
ESRI ArcGIS users should use the f4 version and convert using 'Float to Raster'.
An example 4-byte float header file, of the ETOPO1 Ice Surface grid-registered
grid (etopo1_ice_g_f4) is:
ncols 21601
nrows 10801
xllcenter -180.00
yllcenter -90.00
cellsize 0.01666666667
NODATA_value -99999
byteorder LSBFIRST
NUMBERTYPE 4_BYTE_FLOAT
MIN_VALUE -10898.0
MAX_VALUE 8271.0
An example 2-byte integer header file, of the ETOPO1 Bedrock cell-registered
grid (etopo1_bed_c_i2) is:
NCOLS 21600
NROWS 10800
XLLCORNER -180.000000
YLLCORNER -90.000000
CELLSIZE 0.01666666667
NODATA_VALUE -32768
BYTEORDER LSBFIRST
NUMBERTYPE 2_BYTE_INTEGER
ZUNITS METERS
MIN_VALUE -10803
MAX_VALUE 8333
ETOPO1 1 Arc-Minute Global Relief Model
本源码包内暂不包含可直接显示的源代码文件，请下载源码包。
