[Geowanking] Converting Lat Long to X Y
mnl at well.com
Thu Jan 31 21:16:30 PST 2008
>> Will King wrote: " The "local" coordinates for this light switch
>> would then be (x)10.000, (y)5.000, (z)2.000.
seems like the right way to internally map a mobile object, but wouldn't
it make more sense to describe a - place - [ indoor room] in a common
geodetic standard coordinate system? is there a mathematical or
programmatic reason why not?
>> First measure the lengths of your walls with tape or disto. Lets say
>> your room is 10 metres by 5 metres. Then divide this into
>> theoretical grid squares of your choosing ie 1 metre squares.
By the way, this looks like great fun. i'm bringing my carpenter's
laser level to wherecamp. to use , unless someone brings some pro indoor
surveying gear to help map [ and render? and geotag?] an indoor space,
in detail. now i'm wondering what's the cheapest, most accurate short
-distance range finding hack. - something like a very low power lidar
for rendering indoor terrain.
>> Pick a corner and call this 0.000, 0.000 (this is your bottom left of
>> your living room "grid" if you drew it on paper). Diagonally across
>> (ie top right corner) from this coordinate is 10.000, 5.000. You can
>> then get any coordinate in the room from this grid.
>> To get a z level (elevation) measure up from your floor and "set a
>> level" one metre or whatever up, mark it with pencil etc.
>> On Jan 31, 2008 10:24 PM, Mike Liebhold <mnl at well.com
>> <mailto:mnl at well.com>> wrote:
>> I'm thinking of mapping my living room. Does anyone have any
>> sugggestions How should I convert the location of furniture,
>> lamps, into location coordinates? I think I know how to do x
>> and y, but z is a problem, though highly useful for finding
>> things like books.
>> - mike
>> John Handelaar wrote:
>>> On Jan 31, 2008 9:34 PM, Paul Harwood <paul at harwood-leon.com> <mailto:paul at harwood-leon.com> wrote:
>>>> Just a lazy question from a novice geowanker I suppose...but it might save
>>>> me an evenings surfing though if you can help.
>>>> I have googled a bit, with a few solutions... but does anyone have a perl
>>>> script (or a site) to hand, to do Lat Long conversions to X Y? I have UK
>>>> postcode/outcode/location database that I want to convert from L Lo to X Y.
>>> Again, "X Y" doesn't seem to mean anything specific, but a number of
>>> useful tools and code samples, including stuff relating to OSGB grid refs,
>>> can be found here:
>>> Geowanking mailing list
>>> Geowanking at lists.burri.to <mailto:Geowanking at lists.burri.to>
>> Geowanking mailing list
>> Geowanking at lists.burri.to <mailto:Geowanking at lists.burri.to>
>> Will King
>> 0044 (0) 77950 96645
>> GPS Surveying | Location Data Capture | GIS Digital Mapping
>> Geowanking mailing list
>> Geowanking at lists.burri.to
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Geowanking