How to convert many triangles to one mesh? I wrote an algorithm to randomly generate terrain and I am trying to load and edit my results with blender.  The problem is that when I load my terrain in blender, the individual triangles are not linked together.




You can see when I shrink/flatten a subset the the faces, the rest don't follow and deform as a single mesh.

I tried deleting the faces and edges and using F to create faces from the points, but it does not give usable results.



How can I go about solving this problem?
You have a mesh with many unconnected faces.
In edit mode select all the triangles with A A. Then press W > Remove Doubles. Or on the tool shelf T under the Tools tab press the Remove Doubles button.