Installation instructions for an altered NE2001 version.
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The original code is in fortran and was written by Cordes and Lazio 2003 
"NE2001.I. A New Model for the Galactic Distribution of Free Electrons and its Fluctuations" and
"NE2001. II. Using Radio Propagation Data to Construct a Model for the Galactic Distribution of Free Electrons".
Please refer to those publications when presenting any 
results using the altered version of their code found here. 
The original code is available for download at 
http://www.astro.cornell.edu/~cordes/NE2001/  or,
http://rsd-www.nrl.navy.mil/7213/lazio/ne_model/.

First install the NE2001 according to the instructions in the websites above.
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Here we are only interesed in the thermal electron density returned 
by the NE2001 code (there are several more features we do not explore).
We made some crude alterations to the original code to alow it to interface 
with ours. See the comments with CHANGE in the altered source files.

Once you managed to compile (we used g77) the original NE2001 code, untar ALTNE2001.tar
in the src.NE2001 directory. ALTNE2001.tar contains: 
dmdsm.NE2001.f, density.NE2001.f, neclumpN.f, nevoidN.f, neLISM.NE2001.f 
Now compile the NE2001 code again.
The hammurabi makefile will later copy the files it needs. 

Those are:
dmdsm.NE2001.o, density.NE2001.o, neclumpN.o, nevoidN.o, neLISM.NE2001.o
and also the datafiles:
gal01.inp, ne_arms_log_mod.inp, ne_gc.inp, neclumpN.NE2001.dat, nelism.inp, nevoidN.NE2001.dat
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That's it, you are almost there!
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