MINMAX

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NAME

minmax - Find extreme values in ASCII tables  

SYNOPSIS

minmax [ asciifiles] [ -H ] [ -Idx[/dy] ] [ -: ]  

DESCRIPTION

minmax reads its standard input [or from asciifiles] and finds the extreme values in each of the columns. It recognizes NaNs and will print warnings if the number of columns vary from record to record. As an option, minmax will find the extent of the first two columns rounded up and down to the nearest multiple of dx/dy. This output will be in the form -Rw/e/s/n which can be used directly in the command line for other programs.
xyzfile
ASCII file holding a fixed number of data columns.
 

OPTIONS

#include "explain_-H.txt"
-I
Report the min/max of the first two columns to the nearest multiple of dx and dy, and output this in the form -Rw/e/s/n. #include "explain_-t.txt" Only works when -I is selected.
 

EXAMPLES

To find the extreme values in the file ship_gravity.xygd, try

minmax ship_gravity.xygd

Output should look like

ship_gravity.xygd: N = 6992 <326.125/334.684> <-28.0711/-8.6837> <-47.7/177.6> <0.6/3544.9>

To find the extreme values in the file track.xy to the nearest 5 units and use this region to draw a line using psxy, try

psxy `minmax -I5 track.xy` track.xy -Jx1 -B5 -P > track.ps  

SEE ALSO

gmt #include "refs.i"


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
SEE ALSO

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Time: 07:10:54 GMT, January 07, 2025