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Re: [pcp] Event trace visualisation in pmchart

To: Paul Smith <psmith@xxxxxxxxxx>
Subject: Re: [pcp] Event trace visualisation in pmchart
From: Nathan Scott <nathans@xxxxxxxxxx>
Date: Wed, 19 Sep 2012 23:12:23 -0400 (EDT)
Cc: pcp@xxxxxxxxxxx
In-reply-to: <E750CF84-6885-41C7-84AF-88D0436EE494@xxxxxxxxxx>
Reply-to: Nathan Scott <nathans@xxxxxxxxxx>
Hey TallPaul!

Thanks for the feedback...

----- Original Message -----
> ...
> "She's looking good Vern!" (anyone else get that Far Side reference?)

Heh, yeah, guess that waay simple chart did look a bit like an inflatable
cow!  Hopefully some real data next time. :)

> One thing I think would help when trying to correlate things against
> the trace plot would be to have an option to 'pin' a chart/trace
> just like an Excel freeze pane.  If I have a lot of charts I want to
> compare against the trace to see which ones look like a smoking gun,
> I have 2 problems.
> 
> * pmchart scales ALL the charts to fit the current window bounds.
>  You have a lot of charts, and you get almost spark-line style
> views, hardly readable.  Be better if there was a scroll pane
> allowing one to scroll down through a longer list of charts each
> with a bigger natural style
> 
> * However it would be good to pin a trace, and/or a set of other
> charts 'above the line' (the scrollbar pane) allowing a fixed set of
> panels to stay to the top/bottom, and the scroll bar pane of other
> charts can then be scrolled to compare with the base set for
> comparison.

Most excellent idea.  Almost needs some way of shearing off the
timeline and allowing independent pmtime "Stops" for independent
groups of charts.  Intriguing concepts.

> I wonder if being able to click on an event point adds a subtle
> vertical line at that time point on each of the other visible charts
> to aid with correlation, even in the event of the scrollbar idea
> above, it's nice to have that to aid the eye.

Ah, yes - good call.  I've wished for that with just the regular
sampling charts too in the past - thanks.  That one's eminently
doable relative quickly too, will add that to the short-term list.

cheers.

--
Nathan

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