[GSoC-PortA] chart.* as generics

[Ross Bennett]

No vignette yet. I'll add some examples to the sandbox folder.

Ross


On Sat, Aug 24, 2013 at 10:10 AM, Doug Martin <martinrd at comcast.net> wrote:

> Ross,****
>
> ** **
>
> Is there a vignette yet for using these chart functions?  If not, a couple
> of code examples?****
>
> ** **
>
> Doug****
>
> ** **
>
> ** **
>
> *From:* gsoc-porta-bounces at lists.r-forge.r-project.org [mailto:
> gsoc-porta-bounces at lists.r-forge.r-project.org] *On Behalf Of *Ross
> Bennett
> *Sent:* Monday, August 19, 2013 10:17 PM
> *To:* PortfolioAnalytics
> *Subject:* Re: [GSoC-PortA] chart.* as generics****
>
> ** **
>
> Brian,****
>
> ** **
>
> I have just a couple quick questions regarding chart.Weights and
> chart.RiskReward as generic functions and cleaning up the documentation as
> you did with the versioned functions.****
>
> ** **
>
> My plan is to use an alias for the chart.Weights.* functions for the
> different classes and then have a generic chart.Weights function with a
> call to UseMethod("chart.Weights"). The first argument is RP for
> chart.Weights.RP, DE for chart.Weights.DE, and so on. Should the
> arguments of the chart.Weights.* functions be the same?****
>
> ** **
>
> Should we have the @param and other tags only for one function? Would that
> go on the generic chart.Weights function?****
>
> ** **
>
> My approach would be the same for the chart.Scatter.* functions.****
>
> ** **
>
> Thanks,****
>
> Ross****
>
> ** **
>
> On Sun, Aug 18, 2013 at 1:21 PM, Brian G. Peterson <brian at braverock.com>
> wrote:****
>
> Sounds good.  - Brian****
>
>
>
> On 08/18/2013 03:06 PM, Ross Bennett wrote:****
>
> Brian,
>
> Thanks for clarifying, I was worried that might be the case. I could add
> a new function named chart.RiskReward and make that our generic function
> and use an alias for the existing chart.Scatter.* functions. It could
> look something like this:
>
> chart.RiskReward.optimize.portfolio.ROI <- chart.Scatter.ROI
> chart.RiskReward.optimize.portfolio.random <- chart.Scatter.RP
>
> Would that be ok and worthwhile to do?
>
> Ross
>
>
>
> On Sun, Aug 18, 2013 at 12:05 PM, Brian G. Peterson <brian at braverock.com**
> **
>
> <mailto:brian at braverock.com>> wrote:
>
>     On 08/18/2013 01:35 PM, Ross Bennett wrote:
>
>
>         The PerformanceAnalytics packages already has a chart.Scatter
>         function.
>         Will we have any naming or masking issues if I make chart.Scatter a
>         function for the different optimize.portfolio.objects?
>
>
>     It's easy to make chart.Weights a generic, but it will be much
>     harder with chart.Scatter.*****
>
>     Because PerformanceAnalytics is on CRAN and much more widely used,****
>
>
>     we'd need to match the argument list, and create a
>     chart.Scatter.default in PerfA.  I don't see any way to match the
>     argument list though.
>
>     --
>     Brian****
>
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