As per DC Rainmaker's site:

"You won’t however get any Garmin Cycling Dynamics – since Garmin locks that down to just themselves. Additionally, PowerTap has stated that they’re looking to move slowly into more advanced metrics – taking a bit of a ‘wait and see’ approach to what individuals and research entities might find useful."

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My garmin fenix3 collects Torque effectiveness and Pedal Smoothness from my powertap p1. Are there other metrics?

Garmin 510 collects them and they are available to view in Garmin Connect/WKO4. At present, however, the GPA/GPR function is doing some weird stuff and providing some very strange numbers! The Torque effectiveness and Pedal smoothness however are both there to view in Garmin Connect.

My Edge 810 collects them. You need the latest firmware on the P1 pedals. As per another thread I started a few days ago on ST, there apparently is no value in TE/PS metrics anyway.

Great, I'll give the garmin 810 a look.

Anyone know if it can be linked with a computer via ant plus?

What I am really interested in is if they develop an application of force graph or similar graphic.

Can you explain what you mean? GPA, GPR, KI, and MEPF are built-in functions, so either your build of the program is somehow munged, or the raw data aren't correct.

EDIT: Upon review, I bet I know what's going on. You're looking at the mean maximal GPR and GPA chart that Hunter created. The problem with that way of analyzing the data is that outliers generated by your powermeter will skew the curve (lots of funky stuff tends to happen at short durations, especially with dual-sided systems).

Instead, I'd recommend that you use a line chart (i.e., GPR, etc., plotted against time) or the Zorro chart to analyze your pedaling. That way the occasional bogus value will be immediately evident, and you can either mentally ignore such points, or rescale the axes (Y or X - yes, you can do that in WKO4) to exclude them and focus on the valid data.

From the sounds of it, what you really need is an ANT+ USB dongle, and a program that will use it to display your powermeter data in real time. There are a number of such programs out there (e.g., PeriPedal), but I don't know if any of them will plot the Garmin pedaling metrics. (The standard ANT+ protocol doesn't include the raw torque data sampled at high frequency, so you won't be able to see your pattern of force application - for that you'd need something like the old wired SRM with the torque analysis option, or the newer Pioneer.)

Thank you Andrew.
I have the ant dongle and will look at that software.

In regards to a head unit or a way of displaying what the p1 is reading what would you get?

Your edit is exactly what is going on. I had been looking at the Zorro chart and, as you suggested, the axis are way out of scale, due to a number of values such as GPA 5000w, GPR 5100w. I hadn't thought to re-scale the chart but will try that tonight. Thank you for your input.

You're welcome! Really, though, credit should go to this man:

https://en.wikipedia.org/wiki/Oliver_H._Lowry

whose book A Flexible System of Enzymatic Analysis really drove home to me the value of carefully analyzing data via scatter plots.