Parcel fabrics may not be legal lot surveys, but they should be as accurate as possible. You might also consider regeoreferencing the new photomosaic and then spatially adjusting the new shapefile to match, but again same deal. Another alternative would be to use the spatial adjustment tool and shift the whole thing to match your old shapefile, but this would apparently involve some rubbersheeting so I'd be hesitant to waste my time fixing a contractors error. to copy it over one parcel at a time or use a spatial join and add attribute fields to your existing shapefile. If there is new information in the New parcel shapefile pertaining to existing parcels then you can use the attribute transfer tool. I wasn't able to do anything with the xml file you posted, but it sounds like you've resolved things anyway with the news that the original was drawn from survey plans. AND to boot, it is also important since you've noted that all sorts of utilities layers are based on the same datum. If you have confirmed that the old parcel shapefile is accurate then you should stay with it, period. Question: how do I re-align these so they match?Ĭan anyone explain why the 'correct version''s coordinates do not match those of Google Earth? If I have left any information out that might help solve the problem please let me know and I will do my best to answer. When comparing the same google earth coordinates to the same point on the new land parcels layer they differed by 3m and 8m for Eastings and Northings respectively. Some places line up well but others are skewed, either to the north east, south east, you name it.īoth shapefiles are projected on NAD 1983 in zone 18N, and when comparing some coordinates on the original map to coordinates on google earth (plotted on WGS 84)they were a close match - 0.5m difference. Some of the parcel's edges were misaligned by up to 20 metres in some places.īiggest issue - not a uniform misalignment. This would not usually cause any problems but when I uploaded the new shapefile and placed it over the existing one, the road edges and property lines did not line up. This update is in fact a new shape file that I am to replace the old shapefile with. I have been given an updated version of the land parcels layer for a geodatabase that covers the company's service area (From Hunter GIS).
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