When I compiled PHP on my LinuxPPC box, I didn’t have GD installed and
didn’t want to add another layer of complexity by compiling it in. GD
will let you do all kinds of cool things – creating gifs, complex charts, etc,
if you use libraries from the Sample Code Archive here on this site and PHP’s
built in functionality.
didn’t want to add another layer of complexity by compiling it in. GD
will let you do all kinds of cool things – creating gifs, complex charts, etc,
if you use libraries from the Sample Code Archive here on this site and PHP’s
built in functionality.
I didn’t want the lack of GD to stifle me too much, so I started hunting around
for a way to generate html-based graphs and charts. Fortunately, someone
had already gone to the trouble of writing up a class to handle that.
at
WebGuys
provided a nifty class called HTML_Graphs.
for a way to generate html-based graphs and charts. Fortunately, someone
had already gone to the trouble of writing up a class to handle that.
at
WebGuys
provided a nifty class called HTML_Graphs.
At first, I was a little taken back by the complexity of the class. It does
all kinds of things, from vertical bar charts to multiple horizontal bar charts.
Because I knew I was going to use the class a lot, I spent some time creating a
couple of wrapper functions.
all kinds of things, from vertical bar charts to multiple horizontal bar charts.
Because I knew I was going to use the class a lot, I spent some time creating a
couple of wrapper functions.
Many of the functions of the class don’t need to be used for basic graphing,
which is what I am showing here. For instance, I don’t see any need to
go into detail on creating multiple charts at once. And vertical charts
are created as easily as horizontal charts – just change the “type” parameter
in the GraphIt() function that I detail elsewhere.
which is what I am showing here. For instance, I don’t see any need to
go into detail on creating multiple charts at once. And vertical charts
are created as easily as horizontal charts – just change the “type” parameter
in the GraphIt() function that I detail elsewhere.
So let’s get started. I will at first lay out the functions I have written,
and then we’ll talk about a specific use for them.
and then we’ll talk about a specific use for them.
