If you have a copy of Nuke...
Grab a copy of TerraConv (free and small prog):
http://pkl.mbnet.fi/tg/TerraConv.htmhttp://www.planetside.co.uk/forums/index.php?topic=2117.0This can convert your .ter file to a 32bit tiff - import this into Nuke and use the
Curve tool to measure the
Max Luma PixelThis will give you the maximum intensity level which will be the maximum height of your terrain.
Usually though, displacement values are relative to the dimensions of the terrain they are taken from. and don't need any conversion -
For example if you take a .ter file from World Machine and the x and z dimensions are 8000 x 8000 units (8km square ) and the maximum luminance of the .ter map is 135 then the highest point in your terrain is 135 metres - no conversion needed, just make sure to map the .ter or displacement map to 8km square area.
(wondering how you are importing these World creator .ter files? you shouldn't have to adjust any displacement values?)
Of course I don't know World Creator, so this may not be applicable, but that's the way I would approach ensuring my dimensions are correct.
p.s World Creator looks very cool!