Sorry, more exactly:

(line 5) + image width in pixels * (line 1) = SE longitude.
(line 6) + image height in pixels * (line 4) = SE latitude.

--
Marcelo - http://maps.forum.nu
--


On Aug 6, 8:37 pm, Marcelo <[email protected]> wrote:
> You have NW, (lines 5 and 6), and you can calculate SE using lines 1
> and 4.
> Widht of the image in pixels times line 1 gives you SE longitude.
> Height of the image in pixels times line 4 gives you SE latitude.
>
> --
> Marcelo -http://maps.forum.nu
> --
>
> On Aug 6, 7:57 pm, Bajji <[email protected]> wrote:
>
> > Hi Andy,
>
> > Can you explain how to get pointSW and pointNE using the gfw file.
>
> > The file contents are:
>
> > 0.017971305190311
> > 0.000000000000000
> > 0.000000000000000
> > -0.017971305190311
> > -127.620375523875420
> > 50.406626367301044
>
> > The NWS website explains these fields to be:
>
> > Line 1: x-dimension of a pixel in map units
> > Line 2: rotation parameter
> > Line 3: rotation parameter
> > Line 4: NEGATIVE of y-dimension of a pixel in map units
> > Line 5: x-coordinate of center of upper left pixel
> > Line 6: y-coordinate of center of upper left pixel
>
> > It seems like I have point NW from lines 5 and 6 and not pointSW and
> > pointNE.
>
> > I am also trying to overlay latest weather on my map and would very
> > much appreciate this help.
>
> > Thanks
> > Balaji
>
> > On Jul 30, 10:51 pm, Andrew Trice <[email protected]> wrote:
>
> > > I don't know what "GoogleWeatherMaps" is, but you can use a ground
> > > overlay and show the national US radar available from NOAA on top of a
> > > regulargooglemap.
>
> > > var groundOverlay = new GGroundOverlay(
> > >    "http://radar.weather.gov/Conus/RadarImg/latest_radaronly.gif";,
> > >    new GLatLngBounds(pointSW, pointNE));
>
> > > map.addOverlay(groundOverlay);
>
> > > You can get various radar projections (with varying detail) 
> > > athttp://radar.weather.gov/Conus/RadarImg/
>
> > > Also in that directory, you will see gfw files that can be use to
> > > calculate the SW and NE coordinates (US states and territories only)
>
> > > -Andy
>
> > > On Jul 10, 7:46 pm, Barry Hunter <[email protected]> wrote:
>
> > > > What is "googleweathermaps" ? Never heard of it.
>
> > > > You can embed a map using theGoogleMaps API, and you can overlay
> > > > data - for exampleweatherdata. But you will need to find a source
> > > > for that data, dont thinkGoogleprovide any API for it.
>
> > > > Inputing a city or country and re centering the map is done with a
> > > > Geocoder. The API provides one.
>
> > > > On 10/07/2009, Jyothi N <[email protected]> wrote:
>
> > > > > Hi All,
>
> > > > >       Is is possible to embed googleweathermaps into site.
> > > > > Input will be city or country. displayweatherfor that region.  Please 
> > > > > help
> > > > > me.
>
> > > > > Thanks,
> > > > > Jyothi
>
> > > > --
> > > > Barry
>
> > > > -www.nearby.org.uk-www.geograph.org.uk-
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"Google Maps API" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to 
[email protected]
For more options, visit this group at 
http://groups.google.com/group/Google-Maps-API?hl=en
-~----------~----~----~----~------~----~------~--~---

Reply via email to