1)  Setup

vi .local_cshrc

<ADD>

setenv IDLUTILS_DIR ~/idl/idlutils
setenv IDLSPEC2D_DIR ~/idl/idlspec2d 
setenv XIDL_DIR ~/idl/xidl  
setenv IDL_PATH +$IDL_DIR\/lib:+$IDL_DIR\/examples:+~/idl:+pro/
  <The last line requires IDL_DIR is set properly.  This is your job!>

2) IDLUTILS 

cd ~/idl
svn co https://www.sdss3.org/svn/repo/idlutils/trunk/ idlutils

cd idlutils
bin/evilmake clean   ; Won't work if you didn't set IDLUTILS_DIR
bin/evilmake 


3) IDLSPEC2D

cd ~/idl
svn co https://www.sdss3.org/svn/repo/idlspec2d/trunk/ idlspec2d

cd idlspec2d
$IDLUTILS_DIR/bin/evilmake clean
$IDLUTILS_DIR/bin/evilmake 


4) XIDL

cd ~/idl

svn co https://svn.ucolick.org/xidl/trunk xidl

cd xidl
bin/evilmake clean
bin/evilmake 

5) Run IDL and try  

  IDL> .com x_splot

and 

  IDL> a = djs_median(findgen(100,100),1)