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<DIV><FONT face=Arial size=2>Yes you can have multiple scales...however rrdtool
cannot provide the scale. If you normalise the data so it all
fits on a single y axis, i.e. normalise everything to 0-100 %, all you then need
to do is superimpose a scale onto the rrdtrend. DO NOT
LET rrd print the scale just the trend area. it is quite
easy once you create a small picture (png) having the scale.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Imagemagick enables you to combine two .png files
together and is a command line editor/tool for data manipulation under linux or
I think windows. I run it under a SLUG and linux ubuntu. Thus you
could make a complex multiscale axis and you just use imagemagick to combine the
rrd graph and scale. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The image below is just the rrdgraph combined with
a scale to show alarm setpoint etc however theres nothing stopping you creating
an alternative scale. </FONT></DIV>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><A
href="http://img.photobucket.com/albums/v319/rjconway/rob.png">http://img.photobucket.com/albums/v319/rjconway/rob.png</A></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">This is the scale
file, image magic updates this with actual data then overlays the completed
scale onto the trend...and in firefox it shows its
transparency</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><A
href="http://img.photobucket.com/albums/v319/rjconway/tempscale.png">http://img.photobucket.com/albums/v319/rjconway/tempscale.png</A></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"></SPAN></FONT> </DIV></FONT></DIV>
<DIV><FONT face=Arial size=2>I use image magic to update the header on the web
page below that shows real time data above the trend areas</FONT></DIV>
<DIV><A
href="http://smg.photobucket.com/albums/v319/rjconway/?action=view&current=newupdate.jpg">http://smg.photobucket.com/albums/v319/rjconway/?action=view&current=newupdate.jpg</A></DIV>
<DIV> </DIV>
<DIV>RRDTool and imagemagick and you have all the required tools to create a
really nice html interface for you data</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Imagemagic runs under linux and the NSLU2 slug <FONT face=Arial
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">....</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">rob,
Australia</SPAN></FONT></DIV></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=guthrie@mum.edu href="mailto:guthrie@mum.edu">Gregory Guthrie</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=rrd-users@lists.oetiker.ch
href="mailto:rrd-users@lists.oetiker.ch">rrd-users@lists.oetiker.ch</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, October 04, 2007 6:08
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [rrd-users] rrd graph - multiple
graphs on one plot?</DIV>
<DIV><BR></DIV>I wanted to have multiple data on one graph, and also add an
<BR>additional set of y-axis labels.<BR><BR>I'd like to have wind speed and
direction on one graph, and have the <BR>velocity labels as standard on the
left Y-axis, but also add a <BR>direction indicator (N S E W) scale label over
the scaled <BR>(0-360 => 20-30) wind direction on the right
hand side of the graph.<BR><BR>A site with a similar thing is at: <BR>http:/
/<A
href="http://www.iwindsurf.com/windandwhere.iws?regionID=100&siteID=1399"
eudora="autourl">
www.iwindsurf.com/windandwhere.iws?regionID=100&siteID=1399<BR></A>but
they use icons for direction, I wanted to just plot it as a
graph.<BR><BR>Thanks,<BR>Greg<BR><BR><BR>-----------------------------------------------<BR>Gregory
Guthrie<BR><BR>MUM Faculty Mail - FM 1068<BR>Fairfield, IA
52557<BR>(641)472-7773<BR>------------------------------------------------
<BR><X-SIGSEP>
<P></X-SIGSEP>--------------------------------------------------------
<BR><B>Dr. Gregory Guthrie
<BR></B><X-TAB> </X-TAB>
guthrie@mum.edu
(641)472-1125 Fax: -1103
<BR><X-TAB> </X-TAB>Professor
and
Dean<BR><X-TAB> </X-TAB>Computer
Science Department
<BR><X-TAB> </X-TAB>College of
Computer Science and
Mathematics<BR><X-TAB> </X-TAB>Maharishi
University of Management <BR><FONT
color=#0000ff><X-TAB> </X-TAB>
<A href="http://www.mum.edu/cs_dept"
eudora="autourl"><U>http://www.mum.edu/cs_dept</A></U></FONT>
<BR>--------------------------------------------------------<BR>
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