Getting Native Code

The VisAD native code can be obtained from:

ftp://ftp.ssec.wisc.edu/pub/visad/visad_native.jar

Building Native Code for Applications

Although VisAD is a pure Java system, applications of VisAD may include native code. The reality is that most science code is still written in Fortran.

The applications in visad/paoloa, visad/paoloa/spline, visad/aune and visad/benjamin also include native code in both C and Fortran.

Edit the Makefile in the visad/paoloa, visad/paoloa/spline, visad/aune and visad/benjamin to change the path:

JAVADIR=/opt/java

to point to the appopriate directory where you installed Java.

On systems that support Unix make, change to each of the directories visad/paoloa, visad/paoloa/spline, visad/aune and visad/benjamin run make. This will create the shared object files (i.e., file names ending in ".so") containing native code. To run these applications make sure that your LD_LIBRARY_PATH includes ".", change to one of these directories:

/parent_dir/visad/paoloa
/parent_dir/visad/paoloa/spline
/parent_dir/visad/aune
/parent_dir/visad/benjamin

and run the appropriate java ... command.

Note that the applications in visad/paoloa require data files available from:

ftp://ftp.ssec.wisc.edu/pub/visad/paoloa-files.tar.Z

Building Native Code for the HDF-EOS and HDF-5 File Adapters

Although VisAD is a pure Java system, it does require native code interfaces in its adapters for HDF-EOS and HDF-5 file formats. We believe that the need for these will disappear as the organizations supporting these file formats develop Java interfaces.

The HDF-EOS and HDF-5 file adapters include native interfaces (JNI) to file interfaces written in C. To make the HDF-EOS VisAD native library on systems that support Unix make, change to the visad/data/hdfeos/hdfeosc directory and run make all.

Note that the native code in visad/data/hdfeos/hdfeosc does not include NASA/Hughes' HDF-EOS C file interface code; it only includes our C native code for creating a Java binding to their HDF-EOS C file interface. You must obtain the HDF-EOS C file interface code directly from NASA and NCSA. To do this, please follow the instructions in:

visad/data/hdfeos/README.hdfeos

We have successfully linked these libraries on Irix and Solaris.

Native interfaces can be obtained from:

http://www.hdfeos.org/software/library.php http://www.hdfgroup.org/hdf-java-html/JNI/

Before you can run applications that use the HDF-EOS and HDF-5 file adapters, you must add:

/parent_dir/visad/data/hdfeos/hdfeosc

and:

/parent_dir/ncsa/hdf/hdf5lib

to your LD_LIBRARY_PATH.

Problems

If you have problems, send an email message to the VisAD mailing list at:

visad@unidata.ucar.edu

Join the list by filling out the subscribe form at:

http://www.unidata.ucar.edu/support/mailinglist/mailing-list-form.html

Please include any compiler or run time error messages in the text of email messages to the mailing list.