[GEMPAK #ZUL-859909]: Lat/Lon grid definition

["Unidata GEMPAK Support" <support-gempak@xxxxxxxxxxxxxxxx>]

> Full Name: Mark Hughes
> Email Address: mhughes@xxxxxxxx
> Organization: Global Weather Dynamics, Inc
> Package Version: 5.10.3
> Operating System: Linux
> Hardware: HP Pavillion
> Description of problem: Hi,
> 
> I am using gpmap to draw .vgf files produced from BUFR data.
> I would like to draw lat/lon grid lines with a dotted line which has dots one degree apart.
> 
> Is this possible?
> 
> Thanks,
> 
> Mark Hughes
> Global Weather Dynamics, Inc.
> 
> 


Mark,

One solution I have to ensure 1 degree spacing and allow you the flexibility of
choosing any marker type (dots, crosshair, etc) is to create a station table with
bogus station ids for every lat/lon and then use STNPLT to plot the station locations in the table.
This might be slower than you want, but guaranteed to work. I attached a script to output
those points which you can redirect to a file. Here is the STNPLT line I tested after
running the script and outputting to a file latlonpt.stn:
STNPLT   = 0|3/15/3/1|latlonpt.stn

Another simple solution is to create a 1 degree CED file (eg proj #003) or just grab the latest GFS and use gdplot2
to plot a marker (eg TYPE=m), set IJSKIP=0, MARKER = 3/15/3/1. I like this since it allows you to use IJSKIP
to filter the points to change the spacing (multiples/filter) should you like. 

Anyhow, thats 2 solutions off the top of my head.

Steve Chiswell
Unidata User Support

Ticket Details
===================
Ticket ID: ZUL-859909
Department: Support GEMPAK
Priority: Normal
Status: Closed

Attachment: genstn.csh
Description: Binary data