I am getting T3d error message like this
20:09:06 --> Input error (file t3d.in, line 7)
(routine t3d_input_vertex, file input1.c, line 585)
Zero mesh size specification detected at vertex 1
What is wrong?
A positive element spacing must be assigned to all vertices and control points defining
curves and surfaces. If you do not specify this spacing directly in the input file you have
to use the -d option on the command line to specify the default element size which is then
used by all vertices and control points with no explicitly prescribed element size in the input
file. Failure to supply the appropriate -d option usually results in the above error message.