Conversion of the Digital Parcel GIS Map to Survey Grade Acc

ted.madson · 2012-04-19T08:37:53Z

My Ph.D. research at the University of Florida since 2003 shows that today almost all counties (parishes) in the United States and in many other countries now own and maintain public Digital Parcel GIS Maps (“Parcel GIS Map”) which were usually created from the hand-drawn tax maps and other recorded information. Additionally, most jurisdictions also have a relatively current, high accuracy, digital, aerial orthophoto mosaic which can be viewed on the internet as an overlay on its Parcel GIS Map. Many of these Parcel GIS Maps are now in the process of being rectified by ground data such that the corners and lines more closely agree with the aerial orthophoto mosaics and “ground truth.” Once rectified, these Parcel GIS Maps can produce state plane coordinates (and/or latitudes and longitudes) sufficient to produce boundary maps for most, if not all, boundary requirements.Survey grade GPS allows for the use of this coordinate information to locate corners and lines on the ground. As this high grade GPS becomes more available to the public it is inevitable that within a short period of time this new technology will cause the traditional boundary surveys by licensed (registered) land surveyors to be unnecessary. Given these indisputable facts my questions are these:1. Will land surveyors accept, understand and use this new technology?2. How can land surveyors use this new technology to avoid becoming obsolete?3. Is it too late for land surveyors to participate in these conversions?4. Will the interrelated web of all of the parcels in these Parcel GIS Maps act to reduce litigation over disputed boundaries?Ted MadsonApril 19, 2012

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Software, CAD & Mapping

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Perry Williams

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Stephen

He seems to like the hit and run technique. Just post a ludicrous statement and don't even revisit the thread to defend it. He would be considered in internet troll except it appears he is using his real name.

I dunno. Maybe surveyors have located every lost monument in Florida?

Posted : April 23, 2012 8:51 am

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Conversion of the Digital Parcel GIS Map to Survey Grade Acc

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