grdinfo - Get information about the contents of a 2-D grd file
grdinfo grdfiles [ -C ] [ -L1 ] [ -L2 ] [ -M ]
grdinfo reads a 2-D binary grd file and reports various statistics for
the (x,y,z) data in the grdfile. The output information contains the
minimum/maximum values for x, y, and z, where the min/max of z occur,
the x- and y-increments, and the number of x and y nodes, and
[optionally] the mean, standard deviation, and/or the median, L1 scale
of z, and number of nodes set to NaN.
The name of one or several 2-D grd files.
No space between the option flag and the associated arguments.
-C Formats the report using tab-separated fields on a single line.
The output is w e s n z0 z1 dx dy nx ny [ x0 y0 x1 y1 ] [ med
scale ] [ mean std rms]. The data in brackets are output only if
the corresponding options -M, -L1, and -L2 are used.
-L1 Report median and L1 scale of z (L1 scale = 1.4826 * Median
Absolute Deviation (MAD)).
-L2 Report mean and standard deviation of z.
-M Find and report the location of min/max z-values, and count and
report the number of nodes set to NaN, if any.
To obtain all the information about the data set in file
grdinfo -L1 -L2 -M hawaii_topo.grd
gmt, grd2cpt, grd2xyz, grdedit
Man(1) output converted with