The files generated by Noddy are not Vulcan files in themselves, however they may be converted into Vulcan triangulations using the following procedure:

1) Create .vul file by selecting Vulcan Option form 3D Options Window, and then selecting 3D Layer menu item from Tools menu, this also creates a .hed
header file. This file may also be used to convert to other vector formats, as it simply consists of 4 line sets of Layer Name; vertex 1; vertex 2; vertex 3 in
ASCII format, and is much easier to convert than a DXF file.

2) Once created on a PC version of Noddy, and where the output files are to be processed on a Silicon Graphics computer, you will need to run the Parse utility, which converts .vul file
into two types of files:

• For stratigraphic surfaces, the files are complete,
• For discontinuity surfaces, a further processing stage is required.

3) Since discontinuity surfaces are quite irregular as now calculated, a smoothing step may be introduced by altering the smooth.prf file, which simply contains an integer which specifies how many smoothing steps are applied to these surfaces, a value of 0 will simply output the surfaces as calculated.

The ASCII file with a .smooth suffix cretaed by Parse will, when exectuted, perform this step for all discontinuity surfaces.

4) The final step is to convert these files into native Vulcan format using the ASCII file with a .load suffix, which, when executed, will use the triload Vulcan routine to convrt the files to binary format.

This will result in a set of files with naming conventions as described in section 2.8.9 plus a suffix of .00T. These files can be read in directly by Vulcan as triangulations.