[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

20031119: IDV for fMRI : Volume rendering

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: 20031119: IDV for fMRI : Volume rendering
  • Date: Mon, 24 Nov 2003 16:14:31 -0700
>From: Bernard Mendiburu <address@hidden>
>Organization: UCLA
>Keywords: 200311192240.hAJMe2Ob029375 IDV volume rendering

Hi Bernard-

>What is a Linear3DSet ?
>If it's a regular 3D grid where all the voxels get a value, it's Ok for us.

A Linear3D set is a 3D volume where the spacings between the x, y,
and z values are linear spacings.  Most Vis5D data structures use
this so that is why Vis5D is good at volume rendering.

For the IDV, even if the data are linearly spaced, the display
uses a transformation (CoordinateSystem) from data space to
display space.  I think this is screwing up my attempts at
volume rendering.

Don