Support for arbitrary grid lines

[GoogleCodeExporter]

Through the use of flot for some internal projects we've needed to show
'markers' on graphs, to indicate trends toward a value, etc.

I've made the change to support this in the source, changed the
'setting-options' example to use it and updated the documentation with a
quick note on it's use.

Please see the attached diff for inclusion/consideration.

I'm no 'canvas' expert so please feel completely free to alter the code in
any way that might be necessary.

Take care,
    Ryan

ps. Thanks for flot! It's awesome :)

Original issue reported on code.google.com by ryan.fun...@gmail.com on 17 May 2008 at 12:55

Attachments:

• markers.patch

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I applied your patch and checked it out. The patch itself is great (you even 
added
docs, thanks!). But I'm not going to take it. I think the benefit of 
introducing a
new concept compared to e.g. simply adding another line data series to the 
chart is
too small.

I would rather either see support for plotting functions (I'm thinking along the
lines of { generator: f, samples: 100 }), then simply {generator: function f(x) 
{
return 0; }}, or support for excluding a data series when auto-computing the 
axis
ranges, along the lines of { data: [[-10000, 0], [10000, 0]], 
excludefromranges: true }.

Original comment by olau%iol...@gtempaccount.com on 8 Sep 2008 at 9:19

• Changed state: WontFix
• Added labels: Type-Enhancement
• Removed labels: Type-Defect

[GoogleCodeExporter]

Coming to think of it, support for plotting functions isn't going to help a 
lot, as
it is not going to solve the problem of drawing vertical lines in a 
straightforward
fashion.

I had another look, and I actually think my only real beef with this patch is 
the
name "marker". So I have reopened this bug. I'm not ready to apply it right now,
though. I think taking a callback to generate the list is worthwhile as with the
coloredAreas (which BTW have a lame name). Maybe it is possible to merge the two
concepts into one under a new name, line if you specify some parameters, area 
if you
specify more.

Original comment by olau%iol...@gtempaccount.com on 10 Sep 2008 at 3:59

• Changed title: Support for arbitrary grid lines
• Changed state: New

[GoogleCodeExporter]

Support for lines is in SVN now as "markings", formerly coloredAreas.

Original comment by olau%iol...@gtempaccount.com on 22 Sep 2008 at 5:53

• Changed state: Fixed