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#1
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In July 1997 I plotted a route from Philadelphia to Williamsburg VA using Delorme Ver 3 and bicentennial copy of Adventure Cycling East Coast map. The Bicentennial maps was from Baltimore to Fredericksburg. Delorme was use for the other distances including the return through the DeMaVa Peninsula. The following, with Garmin GPS II+ I plotted a bicycled from Philadelphia to Wellesley MA using a computer and moving map. http://www.billcotton.com/bike.htm I have since made constant use of the Delorme and Mapsource software for route making for club rides. I have found ways to help the software to use the type of roads that I prefers to uses. I will give a talk on this subject this Sunday March 27, 2004 at the Trophy bicycle shop in Philadelphia PA. A outline of my procedure is post here http://www.billcotton.com/Mapping%20...ing%20text.prn -- Billcotton@billcotton.com www.billcotton.com N40° 3.744' W75° 6.180' |
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#2
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"Bill Cotton" <Billcotton@comcast.net> wrote in message news:Pv2dnc4cxud3JP_dRVn-hA@comcast.com... > In July 1997 I plotted a route from Philadelphia to > Williamsburg VA using Delorme Ver 3 and bicentennial copy > of Adventure Cycling East Coast map. The > Bicentennial maps was from Baltimore to Fredericksburg. > Delorme was use for > the other distances including the return through the > DeMaVa Peninsula. The following, with Garmin GPS II+ I > plotted a bicycled from Philadelphia to Wellesley MA using > a computer and moving map. > http://www.billcotton.com/bike.htm I have since made > constant use of the Delorme and Mapsource software for > route making for club rides. I have found ways to help the > software to use the type of roads that I prefers to uses. > I will give a talk on this subject > this Sunday March 27, 2004 at the Trophy bicycle shop in > Philadelphia PA. A > outline of my procedure is post here http://www.billcotto- > n.com/Mapping%20and%20route%20making%20text.prn > > > -- > Billcotton@billcotton.com www.billcotton.com N40° 3.744' > W75° 6.180' > 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 working on my system. Have you compared the "Climbing Elevation" reported by Topo USA to what your 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 cycle computer). In my comparisons, the Delorme software always reported 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 trigger point for elevation gain (the Vetta's trigger seems to be 1 meter). -- ~_-* ...G/ \G http://www.CycliStats.com CycliStats - Software for Cyclists |
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#3
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"GaryG" <garyg@shasta_SPAMBEGONE_software.com> wrote in message news:10668so13t2v378@corp.supernews.com... > "Bill Cotton" <Billcotton@comcast.net> wrote in message > news:Pv2dnc4cxud3JP_dRVn-hA@comcast.com... > > In July 1997 I plotted a route from Philadelphia to > > Williamsburg VA using > > Delorme Ver 3 and bicentennial copy of Adventure Cycling > > East Coast map. > The > > Bicentennial maps was from Baltimore to Fredericksburg. > > Delorme was use > for > > the other distances including the return through the > > DeMaVa Peninsula. The > > following, with Garmin GPS II+ I plotted a bicycled from > > Philadelphia to Wellesley MA using a computer and moving > > map. http://www.billcotton.com/bike.htm I have since > > made constant use of the Delorme and Mapsource software > > for route making for club rides. I have found ways to > > help the software to use > > the type of roads that I prefers to uses. I will give a > > talk on this > subject > > this Sunday March 27, 2004 at the Trophy bicycle shop in > > Philadelphia PA. > A > > outline of my procedure is post here http://www.billcot- > > ton.com/Mapping%20and%20route%20making%20text.prn > > > > > > -- > > Billcotton@billcotton.com www.billcotton.com N40° 3.744' > > W75° 6.180' > > > > 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 > working on my system. > > Have you compared the "Climbing Elevation" reported by > Topo USA to what your > 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 cycle computer). > In my comparisons, the Delorme software always reported > 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 trigger point for elevation > gain (the Vetta's trigger seems to be 1 meter). > > -- > ~_-* ...G/ \G http://www.CycliStats.com CycliStats - > Software for Cyclists I never used a Vetta or Avocet but being aware of the trigger points as you mention, I feel that even if you coast up a small incline after a downhill, it is still should be recorded. In reference to the gps reading, before I begun using TopoUSA, I would save the track file as text, convert it to Excel. I made a template that would strip the negative elevation reading and total the positive reading. ( I had to strip the "ft" after the elevation nunbers) The elevation I got was very close to TopoUSA. I have a table of rides in the Philadelphia, and several in other states. http://www.billcotton.com/bicycle_ri...ing_system.htm This page is an example of a route on the fly while vacationing in Florida a couple of years ago. Several local has use the route. http://www.billcotton.com/stpete.htm I plotted a route from Philadelphia to St John VT for someone that asked on this list, The person reported that they picked the route up in New Jersey and followed it all the way. I have used it to the northern part of New Jersey myself. I when back to try to lessen the climbs in northern New Jersey resulting in a longer route. |
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#4
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"GaryG" <garyg@shasta_SPAMBEGONE_software.com> wrote in message news:<10668so13t2v378@corp.supernews.com>... > 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 working on my system. > > Have you compared the "Climbing Elevation" reported by > Topo USA to what your 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 cycle computer). In my comparisons, the Delorme > software always reported 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 > trigger point for elevation gain (the Vetta's trigger > seems to be 1 meter). My experience, on well known routes, is that TopoUSA overestimates by 10-60%. 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 in multiple forums over the past few years. DeLorme refuses to discuss and/or 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 |
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#5
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"Rick Warner" <rickwarner@earthlink.net> wrote in message news:bc2b2f85.0403251630.3d1dff1c@posting.google.com... > "GaryG" <garyg@shasta_SPAMBEGONE_software.com> wrote > in message news:<10668so13t2v378@corp.supernews.com>... > > > 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 > > working on my system. > > > > Have you compared the "Climbing Elevation" reported by > > Topo USA to what your > > 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 > > cycle computer). In my comparisons, the Delorme software > > always reported > > 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 > > trigger point for elevation gain (the Vetta's trigger > > seems to be 1 meter). > > My experience, on well known routes, is that TopoUSA > overestimates by 10-60%. > 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 > in multiple forums over the past few years. DeLorme > refuses to discuss and/or > 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). -- ~_-* ...G/ \G http://www.CycliStats.com CycliStats - Software for Cyclists |
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#6
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"Rick Warner" <rickwarner@earthlink.net> wrote in message news:bc2b2f85.0403251630.3d1dff1c@posting.google.com... > "GaryG" <garyg@shasta_SPAMBEGONE_software.com> wrote > in message news:<10668so13t2v378@corp.supernews.com>... > > > 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 > > working on my system. > > > > Have you compared the "Climbing Elevation" reported by > > Topo USA to what your > > 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 > > cycle computer). In my comparisons, the Delorme software > > always reported > > 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 > > trigger point for elevation gain (the Vetta's trigger > > seems to be 1 meter). > > My experience, on well known routes, is that TopoUSA > overestimates by 10-60%. > 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 > in multiple forums over the past few years. DeLorme > refuses to discuss and/or > 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 Which GPS are you using now, the 60cs? I am considering up it as a upgrade. I plan to wait until the G-V is upgraded and see if it has the increase memory and the bicycle features of the 60c/s. I am aware of the discussions and since I haven't experience conditions of hilly winding roads I am content with the results that I have gotten. I understand that some GPS allow you to change the sampling rate. I think that the 60c/s has that feature. If the gps is reading every 5 seconds and you are going up on each reading, you reading will be higher that reality. When the tracks are captured in Excel, it show the time and coordinates of each reading. Retracing the route may shed light on your reading. |
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#7
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"Bill Cotton" <Billcotton@comcast.net> wrote in message news:<h76dna-aefY5k_ndRVn-vw@comcast.com>... > Which GPS are you using now, the 60cs? I am considering up > it as a upgrade. Naww, just the Vista. Was going to get the 60CS, but it is too big. On paper it did not sound too big, but once I had one in hand, and mounted on the bike, the size was an issue. Too many things competing for space, and cannot give up that much more at the moment. > I am aware of the discussions and since I haven't > experience conditions of hilly winding roads I am content > with the results that I have gotten. Well, hilly and windy is 80-90% of what I ride. So .... big issue for me and DeLorme does not respond. > I understand that some GPS allow you to change the > sampling rate. I think that the 60c/s has that feature. If > the gps is reading every 5 seconds and you are going up on > each reading, you reading will be higher that reality. Hmmm, not necessarily. If the sampling rate is so coarse that it does not accurately sample the various types of changes there can be sampling error; but it can be high or low, depending on whether increases or decreases are underrepresented in the sample. Even though I am relatively fast as a climber (for a >50 year old guy riding heavy steel bikes) I doubt that I can get any significant sampling error on an altimeter on a climb. But, I can get sampling error as I bomb down the hills ;-) Great fun looking at how wildly off a track log can be when you have a long period between samples and descend a hill at 30-50MPH; looks like I am cutting off switchbacks :-) I try to keep a fairly short period between samples. - rick |
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