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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Being a big fan of Tobias’ work, SmokePing uses a JavaScript
library (appears to be using something like this code <a
href="http://www.defusion.org.uk/code/javascript-image-cropper-ui-using-prototype-scriptaculous/">http://www.defusion.org.uk/code/javascript-image-cropper-ui-using-prototype-scriptaculous/</a>)
to achieve the zoom in/out that I think you are talking about. It is as simple
as dragging a dropping in a pre-canned graph. I haven’t personally
messed around with it but I love the functionality and it could be a good
working example to start off with. Whatever you come up with will
likely be a custom solution as I don’t think this I’ve seen anyone
share a working example of this that is MRTG specific. Just don’t
forget to give credit where it is due.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="http://oss.oetiker.ch/smokeping/">http://oss.oetiker.ch/smokeping/</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Check out the Demo on the links on the left and then select an
individual graph. From there you’ll see a time indication in a pair
of text boxes and be able to quickly drag-select a time span represented
on the graph. Steve makes a valid point that you can’t see data
that isn’t there but I know that the “WOW” factor for my
superiors is there with this solution in SmokePing even though they usually zoom
in so far as to have 2-3 CDPs on screen </span><span style='font-size:11.0pt;
font-family:Wingdings;color:#1F497D'>J</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'>. Sometimes it’s
easier to add a widget than explain why they don’t actually need it.<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
mrtg-bounces@lists.oetiker.ch [mailto:mrtg-bounces@lists.oetiker.ch] <b>On
Behalf Of </b>Steve Shipway<br>
<b>Sent:</b> Wednesday, December 24, 2008 10:47 PM<br>
<b>To:</b> Sheikh, Nasarullah; mrtg@lists.oetiker.ch<br>
<b>Subject:</b> Re: [mrtg] Zooming in to mrtg graphs<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>The first thing you needto understand is the nature of the RRD
files. Because the data is normally only polled every 5minutes, and then
rolled up into 'RRA's at 5min, 30min, 2hr and 1day granularity which are
preserved for <800 CDPs (combined data points), the practical upshot is
that, in many cases, the details you want simply are not there.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>A
1-hour graph can give you only the granularity you poll at; if you do 5min
polls, then you will get only 12 data points in an hour.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Similarly,
if you are looking at the weekly graph (30min CDPs) and want to zoom in on a
point 4 days ago, then your 5min RRA has already expired by this point and you
are already looking at the best detail available. Zooming in to a 1-hour
graph would give you the grand total of 2 points on your graph.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Having
said all that, if you use the Routers2 frontend, there are 'zoom in' and 'zoom
out' buttons; these will simply move between daily, weekly, monthly and yearly
graphs. If you enable RRD Archiving then you will be able to select Daily
graphs for any date you have archived. Finally, an 'Export to CSV' option
is available on all graph pages to give you the data in the best available
granularity.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>If
you modify your RRD file to store data much longer in the RRAs, and to poll at
1min granularity, then the data will be available to make the graphs you
want. However, as this would be highly customised, you'd need to define
your own functions to call the RRD library with the necessary parameters to
generate the graphs. None of the available frontends (routers2, 14all,
mrtg-rrd) cater for this as they deal with the standard configurations.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Steve</span><o:p></o:p></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
mrtg-bounces@lists.oetiker.ch [mrtg-bounces@lists.oetiker.ch] On Behalf Of
Sheikh, Nasarullah [Sheikh.Nasarullah@uk.bp.com]</span><o:p></o:p></p>
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<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Is there a
way to zoom in and out on the graph area. I want to see the graphs of a particular
time in details..e.g a hour graph rather than a 24 hour graph.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Is there a
way that the data that generates the image can be exported to xls later.</span>
<o:p></o:p></p>
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