Univiewer is a visualisation program for HEALPix maps. It is written in C++ and uses OpenGL and the wxWidgets library for cross-platform portability. Using it you can:
Since Univiewer uses OpenGL for 3D graphics, its performance is dependent your video card. It has been tested successfuly on computers with as little as 8Mb video memory, but it is recommended to have at least 32Mb to get good peformance.
In the 3D view, a HEALPix map is projected onto a ECP pixelation to create a texture which is wrapped around the sphere. In calculating the power spectrum, the spherical harmonic transforms are computed using the same ECP pixelation. This inevitably leads to some discrepancies at small scales due to repixelation effects, but they are reasonably small.
Univiewer has been tested on a number of Unix/Linux platforms and on Windows XP. To install it you need:
The developers acknowledge support from the Astrophysics Group, Cavendish Laboratory who sponsored the visit of SMM to the UK.
We welcome feedback and suggestions to help us improve the code in the development of Univiewer version 2. Please send all bug reports to the above email addresses.