I have a pdf file of the contour lines I’d like to import into Sketch Up and use the sandbox tools to create the 3D landscape. First I opened the pdf in Adobe Illustrator to strip it back to just the contour lines i.e. delete title block and text etc. The file is a vector and each contour line is a distinct polyline - so far so good I think.
In illustrator I export the pdf file into something that I think Sketch Up will prefer - a dwg or dxf file. NB I don’t have autoCAD. Illustrator is the only vector based software I have.
In Sketch Up I import this dwg file and the lines seem to be considered a component (or a group?). I scale the whole thing so it’s the right size. Using the sandbox tool on the component doesn’t work so I exploded it. Now each contour line is made up of dozens of little line segments. I select all anyway and try the sandbox tool “from contours” and it seems to work except for the fact that each contour line is exactly the same elevation so the result is perfectly flat.
SO - how do I give Sketch Up the elevation data for each contour line? I doubt this data already exists in the original pdf file so I’m happy to go through the individual contours to apply an elevation height if necessary but firstly I can’t seem to select an individual contour - it’s either in the component or broken into many line segments - too difficult to select each collection of lines to make up each contour. Secondly, I don’t know where to access the Z axis elevation data.