[Xastir-dev] Davis Weather Station Corrections/hacks

[Curt, WE7U]

On Mon, 14 Mar 2005, Curt, WE7U wrote:

> On Sun, 13 Mar 2005, Clay Jackson wrote:
>
> > The formula for Dew Point is inolves a whole bunch of steps (finding the
> > vapor pressure, then the max vapor pressure, then the difference; some
> > stuff with natural logs) and so I was wondering if Xastir already had
> > support for some sort of table (there are lots of dewpoint tables
> > available, it's basically a 100 x 100 matrix).
>
> Nope.  No support for tables that I know of.  There aren't any
> formulas for computing these that the tables were derived from?
>
>
> > Also, the three hour barometer is an interesting problem - I was
> > thinking of building a table of pressures and times and then just taking
> > the value that was 3 hours old every time I got a new report.   Again,
> > any sort of table/list/array handing already built into Xastir would be
> > good.
>
> Again, a formula would be better than some tables.  If possible.

There's also "humidex" and "heat index" (those two might mean the
same thing).  Keep an eye towards implementing those too, as they
appear to be similar to wind chill & dew point calculations.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
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