I am continuing my explorations.  Images of my big dataset have some odd
features, so I am looking at a simple case.  The following .dx file contains
two tetrahedra, making an upside-down pyramid.  MapToPlane images look fine,
but the volume rendering of this object looks OK at some angles but has
chunks missing at other angles.  That is, if I rotate the image it often
looks as if slices have been taken out of it.

My .net script does:

Import > Mark("conc") > AutoColor(Intensity=10) > Image

The dx file is:

object "tetra connection list" class array type int rank 1 shape 4 items
2 data follows
  0  3  1  4
  3  2  1  4
attribute "element type" string "tetrahedra"
attribute "ref" string "positions"
object "position list" class array type float rank 1 shape 3 items     5
data follows
  0  0  0
 10  0  0
 10 10  0
  0 10  0
  5  5 -5
object "conc list" class array type float rank 1 shape 1 items     5 data
follows
  1.00
  1.00
  1.00
  1.00
 10.00
attribute "dep" string "positions"
object "conc_data" class field
  component "positions"    "position list"
  component "connections"  "tetra connection list"
  component "conc"         "conc list"
end

I'd like to know if the faulty images I'm getting are specific to
W98/Cygwin.  Can anyone throw some light on this?

Thanks
Gib

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