/************************************************************************/
/**                                                                    **/
/**                   Linux Installation of DISLIN                     **/
/**                                                                    **/
/** Contents: 1.) Introduction                                         **/
/**           2.) Installing the RPM distribution of DISLIN            **/
/**           3.) Installation of the tar.gz Distribution              **/
/**           4.) Compiling, Linking and Running the Example Programs  **/ 
/**           5.) Using DISLIN from Perl                               **/
/**           6.) Using DISLIN from Python                             **/
/**           7.) Using DISLIN from Java                               **/
/**           8.) Getting a DISLIN License                             **/
/**           9.) Web Sites.                                           **/
/**                                                                    **/
/** Date   : 15.11.2005                                                **/
/** Version: 9.0 / Linux RedHat 9, gcc, g77, g95, gfortran             **/
/** Author : Helmut Michels                                            **/
/**          MPI fuer Sonnensystemforschung, Max-Planck-Str. 2,        **/
/**          D-37191 Katlenburg-Lindau, Germany                        **/
/** Mail:    michels@mps.mpg.de                                        **/
/************************************************************************/


1.) Introduction

   DISLIN is a high level and easy to use graphics library for displaying
   data as curves,  bar graphs,  pie charts,  3D-colour plots,  surfaces,
   contours and maps. The software is available for several C, Fortran 77
   and Fortran 90 compilers.

   The UNIX versions of the graphics software  DISLIN  are distributed as 
   compressed tar files with the file names 'dislin-n.m.xxx.tar.gz' where
   'n.m' contains the DISLIN version while the part 'xxx'  identifies the 
   operating system or compiler.  


2.) Installing the RPM distribution of DISLIN

   The installtion of the RPM distribution of DISLIN for Linux is
   very easy. Give the command

                  rpm -i  dislin-9.0.linux.rpm

   This installs DISLIN in the directory '/usr/local/dislin'. The DISLIN
   utilities are copied to '/usr/bin' and links to the DISLIN libraries
   are created in '/usr/lib'.

   To uninstall DISLIN give the command:

                  rpm -e  dislin 

   Notes:  -  You must be root to install the RPM distribution of DISLIN.

           -  It's not necessary to define the environment variable
              DISLIN, or to change the PATH and LD_LIBRARY_PATH 
              environments for the RPM distribution of DISLIN.


3.) Installation of the tar.gz Distribution

a) Uncompress the tar.gz file with the command

                  gzip -d     dislin-9.0.linux.tar.gz


b) Restore files from the tar file with the command

                  tar   xvf   dislin-9.0.linux.tar    

c) Change to the extraction directory of DISLIN

                  cd    dislin-9.0

d) Choose a directory in the file structure where DISLIN should be
   installed and define the environment variable DISLIN with it:

   For example:    DISLIN=$HOME/dislin     (or: /usr/local/dislin)
                   export DISLIN
    
e) Run the install program with the command 

                   INSTALL

   This program copies files to $DISLIN and sets protections.

f) To make DISLIN available for general use, write the following com-
   mands to your .profile or to /etc/profile

                    DISLIN=directory                     
                    export DISLIN
                    PATH=${PATH}:${DISLIN}/bin

                    LD_LIBRARY_PATH=$DISLIN:$LD_LIBRARY_PATH
                    export LD_LIBRARY_PATH

   Note: The environment variable DISLIN is not necessary if DISLIN
         is installed in the default directory '/usr/local/dislin'. 

g) You can delete the directory 'dislin-9.0'.


4.) Compiling, Linking and Running the Example Programs
  
   Now you can compile, link and run the example programs in the
   directory $DISLIN/examples with the commands:

                    clink     -a exa_c      (for gcc)       
                    dlink     -a exa_f77    (for g77)
                    gf77link  -a exa_f77    (for gfortran, Fortran 77)
                    f90link   -a exa_f90    (for g95)
                    gf95link  -a exa_f90    (for gfortran)
   and
                    clink     -a map_c      (for gcc)       
                    dlink     -a map_f77    (for g77)
                    gf77link  -a map_f77    (for gfortran, Fortran 77)
                    f90link   -a map_f90    (for g95)
                    gf95link  -a map_f90    (for gfortran)

   Note:    The utilities above link by default with the DISLIN single 
            precision libraries libdislnc.so and libdislin.so.
            Double precision versions of the libraries for real numbers are
            included in this distribution. They have the names 
            libdislnc_d.so and libdislin_d.so.

5.) Using DISLIN from Perl        

   A DISLIN module for the programming language Perl is included in this
   DISLIN distribution. The module and some examples can be found in the
   directory $DISLIN/perl

   To use DISLIN from Perl, you have to define the  environment variable
   PERL5LIB:

             export PERL5LIB=$DISLIN/perl

   Note: The Perl module was created with Perl version 5.8.0. The
         Source code of the module is included in $DISLIN/perl for
         re-creating the module if your Perl version is not compatible
         with the version above.


6.) Using DISLIN from Python        

   An extension module for the programming language Python is also 
   included in  DISLIN for Linux. The module and examples can be found
   in the directory $DISLIN/python

   To use DISLIN from Python, you have to define the  environment variable
   PYTHONPATH:

             export PYTHONPATH=$DISLIN/python

   Note: Source code of the Python extension is included in $DISLIN/python
         for re-creating the module. The module was created with Python
         version 2.2.


7.) Using DISLIN from Java        

   An interface for the programming language Java is also included in
   the DISLIN distribution for Linux. It allows to use DISLIN routines
   from Java applications. The interface and examples can be found in 
   the directory $DISLIN/java

   To use DISLIN from Java, you have to define the  environment variable
   CLASSPATH:

             export CLASSPATH=$DISLIN/java/dislin.jar:.
   
   The examples in $DISLIN/java can be compiled and executed with the
   commands

   javac  example.java
   java   example 

   Note:  The shareable library disjava-9.0.so in the directory $DISLIN/java
          was created with Java version JSDK 1.4.2_07.


8.) Getting a DISLIN License

   DISLIN is free for non-commercial use. Licenses for selling programs
   linked with DISLIN or for using DISLIN in an environment related to
   business are available from the site http://www.dislin.de. 


9.) Web Sites

   DISLIN is available via ftp anonymous from the following site:

      ftp://ftp.gwdg.de/pub/grafik/dislin 

   The DISLIN home page is:

      http://www.dislin.de
