pg.ddx.io  pgsql-sql@postgresql.org mailing list archive  

help / color / mirror / Atom feed

From: Nemo Terry <ntuser155@hotmail.com>
To: pgsql-sql@postgresql.org
Subject: Which function transform x,y to latitude/longitude?
Date: Wed, 25 Apr 2007 17:02:02 +0800
Message-ID: <BAY19-F9735E07E622CE8C977DA8F5490@phx.gbl> (raw)

Hi,

For example x= 38356.62 y= 42365.19.how to transform it to latitude 1.399948, longitude 193.92644?

Which function I could use? I don’t know the algorithm.

Initial data is: ("+proj=cass +a=6378137.0 +rf=298.257223563 +lat_0=1.287639n +lon_0=103.8516e +x_0=30000 +y_0=30000").

Thanks a lot.

bill

_________________________________________________________________
与联机的朋友进行交流，请使用 Live Messenger; http://get.live.com/messenger/overview 

view thread (3+ messages)  latest in thread

Message-ID: <BAY19-F9735E07E622CE8C977DA8F5490@phx.gbl>
Permalink:  ../BAY19-F9735E07E622CE8C977DA8F5490@phx.gbl/
Also on:    postgresql.org/message-id/BAY19-F9735E07E622CE8C977DA8F5490@phx.gbl

copy link · copy postgr.es

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-sql@postgresql.org
  Cc: ntuser155@hotmail.com
  Subject: Re: Which function transform x,y to latitude/longitude?
  In-Reply-To: <BAY19-F9735E07E622CE8C977DA8F5490@phx.gbl>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox