"Rick Warner" <[email hidden]> wrote in message
"]news:[email hidden]...
Quoted message said:"GaryG" <garyg@shasta_SPAMBEGONE_software.com> wrote
in message
news:<[email hidden]>...
Quoted message said:
Quoted message said:Thanks for the info. I use Topo USA 4.0, but wish it had
a better user interface...it is very kludgy, and
recently the "Search" feature has
stopped
Quoted message said:Quoted message said:working on my system.
Have you compared the "Climbing Elevation" reported by
Topo USA to what
your
Quoted message said:Quoted message said:GPS shows? In my experience, Topo USA overstates
climbing elevation by 10-30%, depending on the route. I
base this on comparisons with two different recording
altimeters (an Avocet Vertech watch, and a Vetta
V100A
Quoted message said:Quoted message said:cycle computer). In my comparisons, the Delorme software
always
reported
Quoted message said:Quoted message said:the highest amount of climbing elevation, followed by
the Vetta and the Avocet. I suspect the Avocet is on the
low side, because of it's 10
meter
Quoted message said:Quoted message said:trigger point for elevation gain (the Vetta's trigger
seems to be 1
meter).
Quoted message said:
My experience, on well known routes, is that TopoUSA
overestimates by
10-60%.
Quoted message said:It is a fundamental flaw in the way it calculates;
basically it is vector oriented and the vectors it uses
are way to long to get accurate results, esp in hilly
terrain with winding roads. This has been discussed ad
nauseum
Quoted message said:in multiple forums over the past few years. DeLorme
refuses to discuss
and/or
Quoted message said:fix. BTW, I have just started using a GPS with a
barometric altimeter and it is close to the known,
actual elevation gain on the couple of known routes I
have tried it on.
- rick
re: "DeLorme refuses to discuss and/or fix"
That is certainly true. I was an early adopter of version
4.0, and alerted them to several bugs which were eventually
resolved. But, since they came out with the initial patch
for version 4.0, in December of 2002, there have been no
further updates to the product, and they have not
acknowledged any of my emails regarding the Climbing
Elevation issue.
DeLorme will be releasing version 5.0 later this month, but
the list of new features makes no mention of the Climbing
Elevation issue. Hopefully, the new version will at least
show some improvements in the user interface (which, in
version 4.0 was pretty awful).
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