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A Gentle Introduction to NEMO

1: NEMO is a package

NEMO is a collection of programs running under most Unix environments (Linux, Solaris, SGI). It is normally operated within a Unix shell, in which a number of environment variables are used to control NEMO. Any scripting environment (e.g. C-shell, perl, tcl/tk) can be used to assemble tools in a variety of ways for complex data processing.

How does one start NEMO

One has to change the interactive shell (C-shell) a little bit, by adding some environment variables and adding NEMO's bin directory to the search-path. This is normally done in one step. E.g. at INAOE:

	 % source /net/nemo/nemo_start       # older version (2.5.4) 
         % source ~teuben/nemo/nemo_start    # latest version (3.0.2)

which can be done via the .cshrc file, or providing an alias the loads NEMO on-demand (cf. astromake)

	 % alias nemo 'source ~nemo/nemo_start; unalias nemo'

Recall...

Collection of programs and functions to compose new programs (Toolbox vs. Package)
Communication via datafiles (unix pipe), in a portable efficient binary format
Uniform command line user interface (CLUI), which can be easily extended to a GUI (e.g. Khoros, tkrun)
Consistent error, warning and debug reporting
Simple graphics interface via YAPP (e.g. yapp_pgplot, yapp_gl, yapp_sm, ...)
Geared for batch usage, there are not many interactive tools
Does not only Snapshot's, but also Orbit, Potential, Table, Image, FITS....
Relies heavily on classic tools (man, gv, gimp, CVS, make, ...) and public libraries (pgplot, plplot, vogl, cfitsio, HDF)
Web page: http://www.astro.umd.edu/nemo/