...
Get number of undefined in a grid.
ctable range [calc]
Return type of range in the active standard color tablecolor table specified by the command spe ctb set map | tex | color_table_name. 0: data range, 1: relative absolute range, 2: absolute relative range
The argument map in spe ctb set map is the standard color table while tex is the seismic color table.
The range values are in [gvar rangelo] and [gvar rangehi] . The argument calc means calculate range values from active data when percentage color table option.
Example: spe ctb set Sea ; set type [gvar ctable range] ; puts "Type $type Range: [gvar rangelo] [gvar rangehi] "
ctable numcolors
Return number of colors in the active standard specified color table.
Examples
The following example shows the use of gvar command.
...