I'll survey it for you after the Where Camp Mike;-) If it's a standalone grid then it will not be in any coord reference system. Basically when surveying we call it a "local grid" ie a flat grid not taking any earth curvature into consideration. You actually could link it to WSG84 (a common gps lat/long reference system) by making your grid larger to take in your garden for example. Then you could use GPS outside to give you a starting set of coordinates. With consumer grade GPS this wouldn't be very accurate though.
Again the level is just a "local" level without GPS. I meant just measure up from your floor and mark the wall every metre up. Imagine your light switch was in the top right corner of your imaginary room and it was 2 meters of the floor. The "local" coordinates for this light switch would then be (x)10.000, (y)5.000, (z)2.000. You can use height data in kml I believe. Will On Jan 31, 2008 11:10 PM, Landon Blake <[EMAIL PROTECTED]> wrote: > Just hire a surveyor. He will set up his reflectorless total station or > laser scanner in the middle of the room and will give you a complete > topographic survey when he is done. :] > > Landon > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Pall Thayer > Sent: Thursday, January 31, 2008 3:11 PM > To: [email protected] > Subject: Re: [Geowanking] Converting Lat Long to X Y > > I think the only accurate means for doing this would be for you to > trace the grid onto the floors and walls with either a large > permanent marker or, even better, industrial grade, oil-based paint > to prevent it rubbing or flaking away during your daily routines. > Also, it's not enough to just measure the ends and trace string > between them. You're bound to introduce slight errors when actually > making the marks. These errors, although small to begin with, can > escalate to devastating proportions as the project progresses. You'll > have to make regular, incremental measurements progressing from your > 0,0 corner. The smaller the increments, the higher the accuracy. > > Please send us photos when you've finished tracing the grid. I'd > really like to see it. > > > On 31.1.2008, at 22:58, Will King wrote: > > > Mike > > > > After asking myself why;-) here's a quick and dirty method. > > > > 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. > > > > 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. > > > > Will > > > > On Jan 31, 2008 10:24 PM, Mike Liebhold <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> wrote: > >>> > >>> Hi, 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: http://www.nearby.org.uk/ > >> downloads.html _______________________________________________ > >> Geowanking mailing list [email protected] http:// > >> lists.burri.to/mailman/listinfo/geowanking > > > > > > _______________________________________________ > > Geowanking mailing list > > [email protected] > > http://lists.burri.to/mailman/listinfo/geowanking > > > > > > > > -- > > Will King > > 0044 (0) 77950 96645 > > > > http://geodatasolutions.co.uk > > > > GPS Surveying | Location Data Capture | GIS Digital Mapping > > > > _______________________________________________ > > Geowanking mailing list > > [email protected] > > http://lists.burri.to/mailman/listinfo/geowanking > > > > > -- > Pall Thayer > [EMAIL PROTECTED] > http://www.this.is/pallit > > > > _______________________________________________ > Geowanking mailing list > [email protected] > http://lists.burri.to/mailman/listinfo/geowanking > > > Warning: > Information provided via electronic media is not guaranteed against > defects including translation and transmission errors. If the reader is not > the intended recipient, you are hereby notified that any dissemination, > distribution or copying of this communication is strictly prohibited. If you > have received this information in error, please notify the sender > immediately. > _______________________________________________ > Geowanking mailing list > [email protected] > http://lists.burri.to/mailman/listinfo/geowanking > -- Will King 0044 (0) 77950 96645 http://geodatasolutions.co.uk GPS Surveying | Location Data Capture | GIS Digital Mapping
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