Shell Programming and Scripting

I want to graphical display on Unix and It can be in the viewable form of a Excel chart, web page, jpg image or perhaps something else.

The input would contain a start time and duration for each line segment and they may not be contiguous. The input from XML file data. The output look like as attached file.
Please provide some suggestion.

How to write vertical text ??
How to convert a text data file to image file??
Please suggest some solution

Vertical text is not possible on the console (except maybe with Unicode characters). To create an image based on data, I suggest looking at a graph library or a generic image manipulation library (such as GD)

Thanks Pludi for prompt reply
One more thing, is GD available on UNIX?
GD provide horizontal and Vertical graph on Unix?
please suggest or give some link for download GD.

GD is Open Source, so there's a good chance a binary is available for your choice of UNIX. If not, feel free to compile.
It's primary use is that of an generic image manipulation library, which means that it doesn't support graph generation out of the box, but instead hands to the possibility to create your own, customized routines for those.
As for use in scripting, Perl (and many others) do have support for the GD lib, including pre-made graph generation