ROTANG -- HMV

HMV

HMV displays color slices of gridded data, and allows the user to arithmetically difference slices. HMV was originally intended as a debugging tool for atmospheric models, but has proven itself useful for a variety of tasks. HMV uses a simple text format for input files which can be created easily from within a running program or with post-morterm output.

Download HMV Now:

Release 1.2

HMV is surprisingly portable for a Motif program. HMV is known to build clean on DEC-UNIX, OSF-UNIX, SunOS, Solaris, Irix, AIX, and Linux (when Motif is present). It will probably build for your system too. There are no build instructions, just type "make".

HMV is distributed exclusively under the HMV BeerWare License:

You owe me beer.
If you like HMV, you owe me more beer.
You may not sell HMV, or software derived from HMV.

Learn about these features and more! Groove on the HMV manpage, too!

HMV Displaying raw slab data
Arithmetically differencing two fields fields. Useful for comparing results relative to baseline. Patterns in the difference (error) between two fields can help diagnose certain types of bugs: boundary conditions, nudging/forcing, message passing, etc. These two examples are using the same dataset, but are differencing different timesteps and using different color models.
Mapping entire domain over the entire colormap. This is example shows the default two-color mapping with the default 32 colors. The user can specify the number of colors HMV should use. By default (seen), the dynamic range of the entire domain is mapped evenly across the entire colormap.
This frame is the same data as above, except I have put a threshold on both the minimum and maximum values to show (the blackened areas). The threshold value is chosen by clicking on a cell which is to serve as the threshold. The remaining dynamic range is then remapped over all the colors. This increases contrast to resolve fine details.
One Color (Grayscale Colormap)
Two Color (Blue through Red)
Three Color (Blue through green through red)
Spawning multiple windows and looking at the same data different ways.

But That's Not all!

User assignable Missing data value allows ommission of cells.
Load multiple files, Loads multiple files, each file can contain one or more 2D slices of data.
Display the cell column and row, the cell value(s), and difference between the two (if in difference mode).

About The Name

HMV stands for Her Majesty's Viewer (multiple spellings accepted). The name comes from song I was listening to when I "finished" the version I intended to hand in for a grad school project. It was late, I was in the lab by myself listening to the Beatles, Abbey Road, and just as I was finishing up the album was finishing up: Her Majesty. My project still didn't have a name, but it needed one in order to hand it in... Her Majesty's Viewer was born.

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