Auto CAD Integration

NCSU Future Development Using AutoCAD Integration

Problem: This problem requires georeferencing CAD data using different layers in GIS. This provides campus planners with a visual representation of the current use and future development plans for the North Carolina State University Campus.

Analysis:  In order to solve this problem, I have to determine how to locate available data, determine the formatting of provided geodatabase and CAD files, and figure out how to georeference CAD files in order to provide planners with their requested materials.  I received a CAD file and a geodatabase file from North Carolina State University’s GIS department.  I will use this provided data in ArcMap, and format it in a way that will provide a georeferenced map.

I opened ArcMap and directed it to open the files that were provided by NCSU.  I first opened the NCST_Massterplan05.dwg file and changed its projection to that of North Carolina so we can have consistent data frame coordinates.  After that, I georeferenced the polyline to the .sid image that was also provided by NCSU.  The layer attributes get reduced so that I only see the features that the planning team is requesting, such as buildings, streams, lakes, roads, and athletic fields.  In order to make the .sid and the polyline file about the same size, I make both layers about the same size, line up the buildings as best as possible and then use the ‘Add Control Points’ tool in order for the entire map to overlap consistently between both files.

Now that both files line up properly, we have to convert some data to its proper format, from a polyline to a polygon.  Specific attributes are isolated, and then exported to shape files.  Once the shape files are for specific attributes, the formatting from polyline to polygon can begin. This is done through a tool called ‘Feature to Polygon’.  After the feature to polygon process has been completed for the selected attributes, they are converted to a geo-database file.  Where they all act independently, and can be utilized as necessary based on the types of problems that are in question.

Results:
Map after georeferencing processes

Application and Reflection

Problem Description:  Natural resource managers always need to consider how surrounding land is being used.  Whether the land is an easement, development, or privately held open space, natural resource managers can use autoCAD integration to make more precise decisions that will affect the future of the park.

Data Needed:  Data required for this assessment would include geodatabase files along with images of the land.  This data, if available, can be found through academic GIS libraries, or through various government agencies.

Analysis Procedures:  This process would include ensuring that the files have the correct projections.  Then the files need to be georeferenced, and control points added for increased precision.  Finally, data need to be exported to the required format and presented in a way that assists with increased levels of community support for the specific management consideration.