What is the Image module in Perl?

[Public Interest]

I want to make changes to .gif and .jpeg files, such as resize them and cut
80% of the pictures. Add new text. Is TK only for GUI interface or TK can
handle graphics? How does those only stock chart make the realtime chart? Do
they draw the chart using text data from database, or they pre-draw realtime
graph for every stock using some 3rd party program unrelated to web server,
perl, php, then anyone requests 1 graph, it just displays the saved graph.

 

[Gregory Toomey]

It was a dark and stormy night, and Public Interest managed to scribble:

I want to make changes to .gif and .jpeg files, such as resize them and
cut 80% of the pictures.

Use Image::Magick available from www.cpan.org

Add new text. Is TK only for GUI interface or TK

can handle graphics? How does those only stock chart make the realtime
chart? Do they draw the chart using text data from database, or they
pre-draw realtime graph for every stock using some 3rd party program
unrelated to web server, perl, php, then anyone requests 1 graph, it just
displays the saved graph.

Well if you look at the stock market graph I have at www.ipo-australia.com or htttp://www.float.com.au/scgi-bin/prod/graph.cgi?ticker=wow I use:
- the Perl GD module from cpan (version 1.18)
- the graph is created in real time and included in the HTML (have a look at the HTML)
- I access an Oracle datbase for all the data
- you can speed up response time by sending back the static head of a web page straight away, while concurrently working generating the dynamic part; recommended for those obsessed with decreasing response time

gtoomey