NAME
dbevents_calc_mapparams - computes xdelmin, xdelmax, ydelmin, ydelmax for use in dbevents.pf
SYNOPSIS
dbevents_calc_mapparams
SUPPORT
Contributed code: NO BRTT support.
THIS PIECE OF SOFTWARE WAS CONTRIBUTED BY THE ANTELOPE USER COMMUNITY. BRTT DISCLAIMS ALL OWNERSHIP, LIABILITY, AND SUPPORT FOR THIS PIECE OF SOFTWARE.
FOR HELP WITH THIS PIECE OF SOFTWARE, PLEASE CONTACT THE CONTRIBUTING AUTHOR.
DESCRIPTION
To be used in conjunction with dbevents.pf to find the parameters
xdelmin, xdelmax, ydelmin, ydelmax when the user has specified the
lowerleft and upperright corners of the map projection in gmt
(eg. -JE and -R with r option).
Note that these are the map projection parameters for Equal-Distance
projection (edp) maps only. The script is interactive and prompts the
user for input.
PARAMETERS
The following values are interactively requested of the user:
latc - centre latitude
lonc - centre longitude
lat_ll - latitude lower left
lon_ll - longitude lower left
lat_ur - latitude upper right
lon_ur - longitude upper right
EXAMPLE
% dbevents_calc_mapparams
Enter centre latitude: 58
Enter centre longitude: -125
Enter latitude lower left: 46.1
Enter longitude lower left: -138
Enter latitude upper right: 70
Enter longitude upper right: -97
xdelmin -9.03041
ydelmin -11.0653
xdelmax 9.33432
ydelmax 14.0601
---
Input values can also be specified in a file (with line returns between values) and redirected into the script:
% dbevents_calc_mapparams < dbevents_calc_mapparams.in
where file dbevents_calc_mapparams.in consists of:
latc
lonc
lat_ll
lon_ll
lat_ur
lon_ur
SEE ALSO
dbevents(1)
AUTHOR
Taimi Mulder
Antelope User Group Contributed Software