Today I have been using the spatial adjustment tool in ArcGIS to geo-reference the CAD shapefiles I created. We have been moving towards using these in a effort to save time and set up the data so that automated creation of our other data can begin.
Currently, I have CRI and Woodward Hall CAD shapefiles correctly geo-referenced using the Mecklenburg County building footprint file as my building reference. This process only takes about 20 minutes per building, and is much faster than the previous method of copy and pasting the CAD polygons directly into our geo-database.
I have noticed some descrepincies in the types of CAD files from building to building. In the CRI files, the room numbers are actually contained in the polygon, point, and annotation layers of the CAD shapefiles. From what I have noticed, the Woodward Hall CAD shapefiles do not have this type of information anywhere other than the annotations made on the original CAD files. This will definently be a problem in the future, especially if we find that most building exclude this information from the CAD files.
I am now working on getting the Atkins library files geo-referenced and should be done with that by the end of the day.
Friday, October 31, 2008
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