Hi Nicolas, The visad/examples/Rivers.java program draws lines from Java. Each sequence of line segments is constructed as a Gridded2DSet with manifold dimension = 1, and several sequences are combined in a UnionSet. You can execute Python code form a Java program using the visad/python/RunJPython.java class. See its main() method for an example. You basically construct a new RunJPython object, then pass filenames to its execfile() method, or lines of Python code to its exec() or eval() methods. Good luck, Bill On Fri, 6 Jun 2003, [iso-8859-1] nicolas guegan wrote: > Hi, > > I'm sorry, but I don't well understand the visad-jython connection. > > My code is in java with a little visad. > > I want to draw line but I don't want to change my code into the python code. > I want to keep my java code because it's very long and it use the applet. > > Could I use the draw line or use the jython 's package with java code > without create a file.py?