mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
synced 2026-02-13 16:18:42 +00:00
50 lines
2.1 KiB
Plaintext
50 lines
2.1 KiB
Plaintext
<!-- $Id: faq.content,v 1.4 2006/07/05 16:59:56 srhea Exp $ -->
|
|
|
|
<p>
|
|
<i>I've downloaded and unpacked the data. Now what do I do with it?</i>
|
|
|
|
<p>
|
|
We highly recommend that you buy and read both Joe Friel's <i>The
|
|
Cyclist's Training Bible</i> and Allen and Coggan's <i>Training and
|
|
Racing with a Power Meter</i>. The former is the definitive book about all
|
|
aspects of cycling training (although we think he's off his rocker in the
|
|
chapter about diet), and the latter is the definitive book about power-based
|
|
training.
|
|
|
|
<p>
|
|
Also, if you buy either of these books through the links below, we'll get a
|
|
referral fee in return, helping us to support this web site. Thanks!
|
|
|
|
<center>
|
|
<iframe
|
|
src="http://rcm.amazon.com/e/cm?t=goldencheetah-20&o=1&p=8&l=as1&asins=B0006JHZ7Q&fc1=000000&IS2=1<1=_blank&lc1=0000ff&bc1=000000&bg1=ffffff&f=ifr"
|
|
style="width:120px;height:240px;" scrolling="no" marginwidth="0"
|
|
marginheight="0" frameborder="0"></iframe>
|
|
|
|
<iframe
|
|
src="http://rcm.amazon.com/e/cm?t=goldencheetah-20&o=1&p=8&l=as1&asins=1931382794&fc1=000000&IS2=1<1=_blank&lc1=0000ff&bc1=000000&bg1=ffffff&f=ifr"
|
|
style="width:120px;height:240px;" scrolling="no" marginwidth="0"
|
|
marginheight="0" frameborder="0"></iframe>
|
|
</center>
|
|
|
|
<p>
|
|
<i>Does the output of <code>ptunpk</code> exactly match that of the software
|
|
included with the PowerTap?</i>
|
|
|
|
<p>
|
|
Almost. If you run it in compatibility mode, using the <code>-c</code>
|
|
option, it matches the PowerTap software's output exactly on everything but
|
|
the time values, at least for the five sample rides we've tried it with.
|
|
The times are a little off, but not by more than 0.1%, so we don't consider it
|
|
a big deal.
|
|
|
|
<p>
|
|
That said, the PowerTap software does some weird things, like converting from
|
|
kilometers to miles by multiplying by 0.62, but then reporting the miles
|
|
values with five digits after the decimal place. If you run
|
|
<code>ptunpk</code> without the <code>-c</code> option, it will unpack the
|
|
data in the way we think it should. The results mostly match up with the
|
|
official ones, and are almost certainly identical within the range of accuracy
|
|
of the device.
|
|
|