3dcontourdxfqgistin
I'm currently trying to import a 3D contour file into a QGIS project.
How can I export the DXF file from Microstation with height information?
I already have imported it to the QGIS project but can not create a TIN because the height info is missing.
I'm using QGIS Lisboa 1.8.0
So, if you have each contour line saved as a separate shapfile, the simplest way to combine them into one shapefile is the Merge tool. Whether this will work properly depends on how your individual contours are created (See GeoKevin's comment below), but it's an easy place to start.
Load your shapefile and right click on the layer in the layers window.
THe resulting dialog lets you select the filename, encoding and crs.
You can then load the file in the cad program of your choice.
You may need to zoom to extents to make the laey visible to you.
According to Bentley you should also be able to import the shp file directly.
http://www.bentley.com/en-US/Products/MicroStation/Whats-New.htm
Best Answer
Use the Interpolation plugin. It is not turned on by default so click Plugins -> Manage Plugins and check the Interpolation Plugin box. Once activated access the plugin by clicking Raster -> Interpolation -> Interpolation.
From the plugin's menu there is a checkbox that will allow you to use the Z value of your layer as the elevation source rather than a value from the attribute table.