Hi predrag,

So, all these images with that chart should be saved under the same file name. And that image file will be inserted in html page. When data change, new image will be saved and automatically will become visible in html page after page refreshing or a new visiting? Did I understood well?

Yes, exactly!

The only con is that it can't show data in a table.

The same principle can be applied to HTML pages as well: In the Perl script that generates the charts, you could also generate an HTML page that is saved to the web server directory that includes the data in a table as well. (This Perl script that is run at a fixed interval, in this case twice a day, can generate as many different files as it likes.)

Regards,
-- Hauke D