RHQ/JON Chart Types Decision -- Input needed

mike thompson mithomps at redhat.com
Wed Oct 31 19:28:35 UTC 2012







On Oct 31, 2012, at 11:28 AM, Alan Santos <asantos at redhat.com> wrote:

> Any chance you could include examples of the four types with the same data?

Not easily. It is not like GFlot where one can just change the chart type. D3 is not a charting API it is a low level toolkit for building (coding) visualizations (that is how it is able to produce such a wide variety of non-traditional graphs). The code has be tailor fitted to the problem. One of the problems with d3 is that each chart type uses different data models so that is not so easy. 

I have included the attachment of some sample chart types that we are comparing (without similar data):

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> 
> 
> On Oct 30, 2012, at 11:59 PM, mike thompson <mithomps at redhat.com> wrote:
> 
>> Visualizing RHQ Metrics Data
>> 
>> On the issue of chart types...  More specifically, how do we want visually depict our metric data?
>> 
>> We are nearing the end of implementing the RHQ chart replacement (using http://d3js.org) and want to get our chart types dialed in with input from our community before they are completely finished.
>> 
>> This isn’t a new issue, here is a link to previous design discussion: https://docs.jboss.org/author/display/RHQ/Design-NewChartingLib
>> 
>> Future Chart Types under consideration:
>> 
>> 1) Line/Area chart - shows progression over time, needs to be supplemented with high/low and OOB data (but all these lines become an area graph and easy visual deciphering is lost)
>> 2) Bar chart - familiar, easy to understand, needs high/low and OOB to convey complete information, not entirely accurate as lower bar near axis depicts values that were never part of the metric range
>> 3) Candlesticks - accurately shows the range but not when values trended or fluctuated during that time slice; users might need training to understand. OOB data would need to be supplemented with high/low peak OOB data
>> 4) Box Charts with whiskers: http://en.wikipedia.org/wiki/Box_plot; nice looking, sophisticated, but might be confusing to users. We could replace the quartiles with high/low data and whiskers with OOB data
>> 
>> Today, there is several ways of representing various time series metrics throughout RHQ.  We are trying to consolidate these into a couple standardized charts. For reference to current RHQ Graph types please see attachments
>> 
>> <RHQ Chart Gallery.pdf>
>> 
>> 
>> There has been many opinions on this issue and we wanted further feedback from the community on their thoughts. So please, reply back with your thoughts...
>> 
>> 
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> 
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