No, not soon, but food for thought for GIS developers. Research every piece of real estate back to its legal beginning and codify it. Well, we can't do all of that, but maybe we could do ....
Is the computerized map important or is it expendable? That is, would a database accessed without a map not be as valuable?
In this state some political boundaries require a survey, so even that is a bit scary that the GIS person didn't realize it. A city can't annex land without one. May be different in other states, but...........
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When I left big giant computer company to start collecting gps and gravity and found land surveying, I was asking the same question because I had no idea yet how big that problem is to solve.
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Woohoo!
Yes the map part is what I do anyway. If I had a list of landowners with all that data cross-referenced in TRS-LBS format that would do what I want. When I set up a job I reference it to a job card, which places the reference the job in TRS-LBS format. Then if I need to access my information in that area all I need to do is pull up any job in the area of concern.?ÿ
That's what I thought. That seemed to me to be the way that Esri and Autodesk together could be of help, but I think that alliance is headed toward BIM and architectural applications.?ÿ
I don't know what TRS-LBS format is, but I can see a big ol' relational database accessible by address, coordinates, PLSS location, etc. It would take people far smarter than me and years of work to do a big county, and a good bit of the work would be resolving century-old errors, but what a product at the end.?ÿ
have to keep the lawyers out of it, though.
Math is easy, words are hard. Oscar Adam's dream of having coordinates to identify every important point on the ground is still just a dream.?ÿ
Survey lazy shorthand for Township, Range, Section,,,,,,,,Lot, Block, Subdivision.
LOL! Even an Easterner should have figured that out. I jumped to the conclusion that it was some dot suffix that I didn't know.
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So, how does GIS get those lines for property boundaries? I see coordinates in the script and the different geometries, but where do they come from?
Are some of them actually "best guesses?"
So, if I'm going to create a GIS for 30 lots in my neighborhood, will I look at 30 deeds, or will I import the aerial photo and assign a coordinate or two and then draw lines where it "seems" that they should go?
Being a purist here..the GIS is lots of pieces. It's more than A.?ÿ ?????ÿ
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When you want to add data into the GIS, If you're using legals/deeds/napkins etc, the software front end should allow you to draft the lines based upon the method (direction and distance, etcetcetc...)
Before you do that, you'll have to establish a template map, or set up your reference system first each time, and once you're up and ready, within the default geodatabase you have from creating a map in the GIS application, you'd import data for cadastre and other known location data to pick your starting points for your lines.
Of course just like in Autodrafting land, you can draw up your lines referring to each other and collectively bring in the arbitrary lines and attach them to real world coordinates.
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This is a really high 50000 Agl view and very simple for the fact I'm typing this into my phone, so I'm less adept at giving more info through this little soda straw device.
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We could zoom some time if you're interested in digging deeper .
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Image is last in the scope of important except when you're using weird or unknown coordinate data or find your points are not where you want to be....this could be a long dialogue.
Good enough. For me, I'm focused on coordinate systems, so the takeaway is that coordinates are assigned to plats at some point. However, not all of the source data show coordinates, so there seems to be a built-in source of possible positional discrepancy between the GIS and the survey.
I've always been amazed that our local county GIS is as good as it is. It allows thematic shp files to be downloaded and that's something that I look for in other GIS implementations. It's probably not important to surveyors.
That's the frankest exchange I've had with a GIS professional. Thanks for the candor. More of it from others would bridge a lot of gaps.
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I'm low level compared to GISPs.
The difference I bring is I've collected the data, planned the projects for collection, reduced the data, built the database or tuned them, explained why we can't do that and that's usually where I get ostracized by the higher up GIS echelon because they don't like learning you know more than they do...
Thanks for the compliment. We can all do better to be honest and actively discuss our professional areas, it's not incriminating, it's liberating.
In a perfect reality I'll be at the top of the ladders ( certification and license ) before I die someday.
That is a good goal.
