Re: Creating a chart or graphic line...
Re: Creating a chart or graphic line...
- Subject: Re: Creating a chart or graphic line...
- From: Brian Johnson <email@hidden>
- Date: Fri, 22 Oct 2004 09:51:19 -0700 (PDT)
On Fri, 22 Oct 2004, Bernardo Hoehl wrote:
I have a little app that writes a log showing temperature in a furnace,
thermal expansion and time.
Example:
10:15, 230º C, 0.10%
10:45, 250º C, 0.15%
and so goes on... up to 800ºC
I would like to generate a chart, a graphic line displayed on screen, that
could be printed, using x and y axes, using temperature and expansion values
only.
I mean a graphic line like you would see printed in a newspaper in the stock
exchange section.
Questions:
1) How would you approach the problem? Use your own built app? Or use some
exiting app?
2) Any tips of how to get it done?
Depends on desired outcome. You could do this with straight-forward HTML
(assuming the data can be presented as a web page, with or without a web
server)
<img src=bar.gif height=10 width=xxx > where xxx = f(expansion)
put a stack of these (representing the different temperatures) together
and you've got a simple bar char.
Alternatively, you could use Smile, which includes lots of nifty
chart-making featuers from what I can see on the web site, or Excel, or
you could do your own line drawing with something like clip2gif and a
bunch of applescript to do scaling & etc.
HTH.
- brian johnson
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