By chance, I found myself needing to draw charts on the Web.
The idea is to receive backend data and draw graphs from it.
There are various conceivable approaches, such as using GnuPlot or R,
but for convenience, I downloaded a Flash graphing library.
The result is the graphs below.
Don’t you think they are quite good?
# Well, that means I have completed at least one of my weekend assignments.
However, there is a problem with off-screen drawing in IE. In actual use, though, I can simply place the graph somewhere visible…. There is no problem in Safari or Firefox.
Update: What I wrote about IE’s off-screen drawing not working appears actually to be an IE cache problem.
Apparently, to avoid it, you only need to add a random parameter to the data source.
I cannot do that on this blog, though…orz