is the coastline data requisites for the Seagrid?

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chenkeyu · #1 Unread post by **chenkeyu** » Tue Oct 09, 2007 3:01 am

hi,i have two problems,could you help me?
1.I have the bathymetry data ,but i havn't the coastline data of them,is the coastline data requisites for the Seagrid?
2.The bathymetry data I have is based on relative coordinate ,but the coastline data downloaded from http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html is based on the
spherical coordinate.

Could you give me some advice to solve the two problems?
thanks~!

kate · #2 Unread post by **kate** » Tue Oct 09, 2007 6:13 pm

I can't speak to Seagrid, but you should in principal be able to make a grid using x,y coordinates. If you wanted to know how the coastline lay relative to your grid, you'd have to find a coastline in your coordinates. Both Seagrid and the Fortran tools are expecting things in lat/lon - doing anything else will take hacking on your part. For ROMS, set the "spherical" flag to false if you don't have valid lat/lon values. If you decide to go with x,y, try looking into Pavel Sakov's grid tool mentioned in this thread:
viewtopic.php?t=372

chenkeyu · #3 Unread post by **chenkeyu** » Wed Oct 10, 2007 12:44 am

thanks

rsignell · #4 Unread post by **rsignell** » Wed Oct 10, 2007 11:10 am

I've added some more information about how to create and format coastline and bathymetry data for SeaGRID to the WikiROMS. Check

https://www.myroms.org/wiki/index.php/seagrid

-Rich