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Friday, March 11, 2011

Tracing Contours to Create Revit Topography

Source: http://whatrevitwants.blogspot.com/2011/03/tracing-contours-to-create-revit.html

What Revit Wants
about an hour ago by Luke Johnson
You have a scanned image of a Contour Plan, and you want to convert that raster image into useful vector data.  How do you go about it?

In the past, I would have used vanilla AutoCAD to trace the contours to polylines, then I might 'spline' them, then convert back to polylines (using a LISP tool), set all the elevations properly, and then import to Revit, then Create from Import to make the Topography.  Fun!

However, this week I have fallen in love with a new tool.  Its called AutoCAD Raster Design.  I'll admit - it's not perfect.  But it is smart, and it makes the process much more bearable.  Just follow these steps:

continue reading: http://whatrevitwants.blogspot.com/2011/03/tracing-contours-to-create-revit.html


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