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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
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I've set up a page on my website which should enable you to find out
your height above sea-level as well as the sunrise/sunset time. To find it, go to http://www.jstott.me.uk/gmapsgeotools/ All you do is to centre the map on where you are (or where you want to find out about) and click either the "Get Height" or "Get Sunrise/Sunset" buttons (after modifying the date/timezone/dst if you want). Height data covers the whole of the maindland UK and islands up to 60 degrees north, as well as some parts of Ireland, France, Belgium and Holland. If you're interested, the height data is derived from the Shuttle Radar Topography Mission data which has data points every 3 arc seconds between 56 degrees south and 60 degrees north. For the UK, 3 arcseconds works out at aroundabout 90m. Vertical accuracy is reported to be within 16m - the height for my location is given as 7m when I'd previously read it off an OS map as being 8m. It would be interesting to know about your views on user-friendliness, other ideas for geographic tools like that (distance between two points? areas?), apparent accuracy or just plain errors! I already have plans to display the latitude/longitude at the centre of the map as well as the OS grid reference. -- Jonathan Stott Canterbury Weather: http://www.canterburyweather.co.uk/ Reverse my e-mail address to reply by e-mail |
#2
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I clicked on the height button, it came up with my latitude and longitude!
PKH "Jonathan Stott" wrote in message ... I've set up a page on my website which should enable you to find out your height above sea-level as well as the sunrise/sunset time. To find it, go to http://www.jstott.me.uk/gmapsgeotools/ All you do is to centre the map on where you are (or where you want to find out about) and click either the "Get Height" or "Get Sunrise/Sunset" buttons (after modifying the date/timezone/dst if you want). Height data covers the whole of the maindland UK and islands up to 60 degrees north, as well as some parts of Ireland, France, Belgium and Holland. If you're interested, the height data is derived from the Shuttle Radar Topography Mission data which has data points every 3 arc seconds between 56 degrees south and 60 degrees north. For the UK, 3 arcseconds works out at aroundabout 90m. Vertical accuracy is reported to be within 16m - the height for my location is given as 7m when I'd previously read it off an OS map as being 8m. It would be interesting to know about your views on user-friendliness, other ideas for geographic tools like that (distance between two points? areas?), apparent accuracy or just plain errors! I already have plans to display the latitude/longitude at the centre of the map as well as the OS grid reference. -- Jonathan Stott Canterbury Weather: http://www.canterburyweather.co.uk/ Reverse my e-mail address to reply by e-mail |
#3
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On Wed, 02 Nov 2005 23:39:10 +0000, Jonathan Stott
wrote: I've set up a page on my website which should enable you to find out your height above sea-level as well as the sunrise/sunset time. To find it, go to http://www.jstott.me.uk/gmapsgeotools/ Your function function updateHeight() is returning the wrong data. -- Regards, Paul Herber, Sandrila Ltd. http://www.pherber.com/ Electronics stencils for Visio http://www.electronics.pherber.com/ |
#4
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On Thu, 03 Nov 2005 00:01:37 +0000, Paul K Hudson wrote:
I clicked on the height button, it came up with my latitude and longitude! I get Latitude (accurately, which is unusual for Google maps) but not Longitude. There's a clash between the main display for sunset/sunrise, which shows "GMT +0", but the smaller DST (yes "D") box is ticked, so the times are in BST not GMT. XEphem gives sunset time about 3 minutes different, but I don't know which is correct. Mike |
#5
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Paul Herber wrote:
Your function function updateHeight() is returning the wrong data. It is now returning the correct data. -- Jonathan Stott Canterbury Weather: http://www.canterburyweather.co.uk/ Reverse my e-mail address to reply by e-mail |
#6
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Mike Causer wrote:
I get Latitude (accurately, which is unusual for Google maps) but not Longitude. There's a clash between the main display for sunset/sunrise, which shows "GMT +0", but the smaller DST (yes "D") box is ticked, so the times are in BST not GMT. XEphem gives sunset time about 3 minutes different, but I don't know which is correct. The height problem is fixed. I used "DST" as opposed to "BST" because I eventually want to cover more than just the UK. Perhaps "Summer Time" would be better. The box should be checked if the month is April through October which should be generally right for most (northern hemisphere!) countries. -- Jonathan Stott Canterbury Weather: http://www.canterburyweather.co.uk/ Reverse my e-mail address to reply by e-mail |
#7
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Jonathan Stott wrote:
I've set up a page on my website which should enable you to find out your height above sea-level as well as the sunrise/sunset time. To find it, go to http://www.jstott.me.uk/gmapsgeotools/ All you do is to centre the map on where you are (or where you want to find out about) and click either the "Get Height" or "Get Sunrise/Sunset" buttons (after modifying the date/timezone/dst if you want). Height data covers the whole of the maindland UK and islands up to 60 degrees north, as well as some parts of Ireland, France, Belgium and Holland. If you're interested, the height data is derived from the Shuttle Radar Topography Mission data which has data points every 3 arc seconds between 56 degrees south and 60 degrees north. For the UK, 3 arcseconds works out at aroundabout 90m. Vertical accuracy is reported to be within 16m - the height for my location is given as 7m when I'd previously read it off an OS map as being 8m. It would be interesting to know about your views on user-friendliness, other ideas for geographic tools like that (distance between two points? areas?), apparent accuracy or just plain errors! I already have plans to display the latitude/longitude at the centre of the map as well as the OS grid reference. Map doesn't show on Konqueror - OK in Firefox, Epiphany, and Opera. Apparently, from a previous thread, this is a problem Konqueror has with Google maps. However, there are some HTML errors. Don't know whether they are relevant to the problem. Try http://validator.w3.org/. I found moving around the map laborious, even with broadband. It would be an advantage to be able to centre/zoom on a location by clicking on it. -- Graham Davis Bracknell |
#8
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Graham P Davis wrote:
Map doesn't show on Konqueror - OK in Firefox, Epiphany, and Opera. Apparently, from a previous thread, this is a problem Konqueror has with Google maps. However, there are some HTML errors. Don't know whether they are relevant to the problem. Try http://validator.w3.org/. OK, there are lots of errors, but they shouldn't stop the page from working in most browsers. I don't believe that Google Maps work in Konqueror - I've tested it on the two more popular browsers (FireFox and Internet Explorer) and it seems to work ok. Perhaps Google will add support for more browsers soon (even the support for Internet Explorer is a bit ropey for some things!) I found moving around the map laborious, even with broadband. It would be an advantage to be able to centre/zoom on a location by clicking on it. You can centre the map on a point by double-clicking. -- Jonathan Stott Canterbury Weather: http://www.canterburyweather.co.uk/ Reverse my e-mail address to reply by e-mail |
#9
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All you do is to centre the map on where you are
How? Height data covers the whole of the maindland UK It told me the height of the fields just inland from Red Head (80m) were at 0 feet. I could not figure out how to make the map centre on Red Head itself. Anne |
#10
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I found moving around the map laborious, even with broadband. It would
be an advantage to be able to centre/zoom on a location by clicking on it. Agreed. Anne |
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