[rrd-users] Re: Changing line color

[Alex van den Bogaerdt]

On Thu, Jan 23, 2003 at 03:29:22PM -0500, Vargas, Miguel wrote:

> Is it possible to do changing colors on LINE? graphs?  The AREA trick
> doesn't work on line graphs because the lines aren't connected, this is
> especially noticeable on low resolution graphs.  For example I tried this
> 
> DEF:in=my.rrd:In:AVERAGE 
> CDEF:under=in,34000,LT,in,UNKN,IF 
> CDEF:over=in,34000,GT,in,34000,-,UNKN,IF 
> LINE2:under#00ff00 
> STACK:over#ff0000
> 
> And here is what it looks like: http://miguel.vargas.com/test.png.

?

This picture seems to show two normal lines, not one stacked on top
of the other.

I do see the gaps.  From what I see on the graph, you are displaying
the red line between 09:15 (or so) and 18:15 (or so).

If you do indeed use LTIME, make the two lines overlap.

pseudo code:

change
   if (time >= 09:15) and (time <= 18:15) then display in red
   else display in green
into
   if (time >= 09:15) and (time <= 18:15) then display in red
   if (time <= 09:15) or  (time >= 18:15) then display in green

Never tried this, but should work in theory.

HTH
Alex
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