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GPS Units = Show road steepness?



 
 
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  #11  
Old March 11th 19, 12:01 AM posted to rec.bicycles.tech
Frank Krygowski[_4_]
external usenet poster
 
Posts: 7,283
Default GPS Units = Show road steepness?

On 3/10/2019 6:29 PM, wrote:

GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.


What?? No television??


--
- Frank Krygowski
Ads
  #12  
Old March 11th 19, 01:50 AM posted to rec.bicycles.tech
John B. Slocomb
external usenet poster
 
Posts: 805
Default GPS Units = Show road steepness?

On Sun, 10 Mar 2019 20:01:13 -0400, Frank Krygowski
wrote:

On 3/10/2019 6:29 PM, wrote:

GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.


What?? No television??


The Electric Bike Worldwide Report predicts that the electric bike
industry is poised to grow to 2 billion by 2050. Eventually 84 million
e-bikes could be sold each year.

One can envision a day when bicycles will be totally enclosed and
equipped with air conditioning and stereophonic sound :-)

One can only assume that once the electric bike is established riding
a bicycle will equate with the exercise value of sitting in front of
the T.V.


--
Cheers,
John B.


  #14  
Old March 11th 19, 01:24 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 393
Default GPS Units = Show road steepness?

On Monday, March 11, 2019 at 2:52:23 AM UTC+1, John B. Slocomb wrote:
On Sun, 10 Mar 2019 20:01:13 -0400, Frank Krygowski
wrote:

On 3/10/2019 6:29 PM, wrote:

GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.


What?? No television??


The Electric Bike Worldwide Report predicts that the electric bike
industry is poised to grow to 2 billion by 2050. Eventually 84 million
e-bikes could be sold each year.

One can envision a day when bicycles will be totally enclosed and
equipped with air conditioning and stereophonic sound :-)

One can only assume that once the electric bike is established riding
a bicycle will equate with the exercise value of sitting in front of
the T.V.


--
Cheers,
John B.


40% of the bike sales last year in The Netherlands was an electric assisted bike. Get used to it.
  #15  
Old March 11th 19, 02:18 PM posted to rec.bicycles.tech
Duane[_2_]
external usenet poster
 
Posts: 319
Default GPS Units = Show road steepness?

On 11/03/2019 9:24 a.m., wrote:
On Monday, March 11, 2019 at 2:52:23 AM UTC+1, John B. Slocomb wrote:
On Sun, 10 Mar 2019 20:01:13 -0400, Frank Krygowski
wrote:

On 3/10/2019 6:29 PM,
wrote:

GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.

What?? No television??


The Electric Bike Worldwide Report predicts that the electric bike
industry is poised to grow to 2 billion by 2050. Eventually 84 million
e-bikes could be sold each year.

One can envision a day when bicycles will be totally enclosed and
equipped with air conditioning and stereophonic sound :-)

One can only assume that once the electric bike is established riding
a bicycle will equate with the exercise value of sitting in front of
the T.V.


--
Cheers,
John B.


40% of the bike sales last year in The Netherlands was an electric assisted bike. Get used to it.


A riding buddy of mine got his wife an e-bike last year. She used to
complain about his spending time on his bike. Now she's the one pushing
to ride. I'm not ready for one but I wouldn't necessarily equate an
e-bike with sitting in front of the T.V.
  #16  
Old March 11th 19, 03:41 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 1,260
Default GPS Units = Show road steepness?

On Sunday, March 10, 2019 at 3:29:43 PM UTC-7, wrote:
On Sunday, March 10, 2019 at 1:46:44 AM UTC+1, Sir Ridesalot wrote:
Talking about GPS units on another thread reminded me of something else I wondered if they do. Does a bicycle GPS unit show you the steepness of roads? There's an area that I frequently ride where on road has short but very steep hills, another road a mile or so east of it has much more gradual hills whilst a third road to the west of the first one is a major highway that can be ridden with a bicycle. What I'm wondering is this: if someone unfamiliar with the area got there and used a GPS unit to show those three roads, would the GPS unit show them the different gradients of the roads? Or is that another function that they'd need to download or otherwise install?

Cheers


GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.

Lou


You are correct that actual gradient is absolutely useless except for human curiosity and bragging rights to the gradient climbed.
  #17  
Old March 11th 19, 06:09 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 393
Default GPS Units = Show road steepness?

On Monday, March 11, 2019 at 3:18:06 PM UTC+1, duane wrote:
On 11/03/2019 9:24 a.m., wrote:
On Monday, March 11, 2019 at 2:52:23 AM UTC+1, John B. Slocomb wrote:
On Sun, 10 Mar 2019 20:01:13 -0400, Frank Krygowski
wrote:

On 3/10/2019 6:29 PM,
wrote:

GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.

What?? No television??

The Electric Bike Worldwide Report predicts that the electric bike
industry is poised to grow to 2 billion by 2050. Eventually 84 million
e-bikes could be sold each year.

One can envision a day when bicycles will be totally enclosed and
equipped with air conditioning and stereophonic sound :-)

One can only assume that once the electric bike is established riding
a bicycle will equate with the exercise value of sitting in front of
the T.V.


--
Cheers,
John B.


40% of the bike sales last year in The Netherlands was an electric assisted bike. Get used to it.


A riding buddy of mine got his wife an e-bike last year. She used to
complain about his spending time on his bike. Now she's the one pushing
to ride. I'm not ready for one but I wouldn't necessarily equate an
e-bike with sitting in front of the T.V.


It is certainly not the same as sitting in front of the TV. You may make fun of it but the introduction of the E bike gave cycling an enormous boost in the last 5 years even here in The Netherlands. That is a good thing. Bike sales are way up.

Lou
  #18  
Old March 11th 19, 07:00 PM posted to rec.bicycles.tech
Zen Cycle
external usenet poster
 
Posts: 91
Default GPS Units = Show road steepness?

On Sunday, March 10, 2019 at 6:35:02 PM UTC-4, Roger Merriman wrote:
Sir Ridesalot wrote:
Talking about GPS units on another thread reminded me of something else I
wondered if they do. Does a bicycle GPS unit show you the steepness of
roads? There's an area that I frequently ride where on road has short but
very steep hills, another road a mile or so east of it has much more
gradual hills whilst a third road to the west of the first one is a major
highway that can be ridden with a bicycle. What I'm wondering is this: if
someone unfamiliar with the area got there and used a GPS unit to show
those three roads, would the GPS unit show them the different gradients
of the roads? Or is that another function that they'd need to download or
otherwise install?

Cheers


Various mapping sites will show the gradient, and some GPS units will show
the gradient, in the same way that it can give improbable maximum speeds
they can also give improbable max gradients or sometimes on very short
ramps not notice it, there is a nasty little ramp nr my folks place, which
is the software flattens claiming 12% when it’s a fair cruel 25/30% even
more cruel this weekend with a 50mph headwind.


It's probably an averaging issue - taking enough samples before and after the section so that it flattens the pitch.
  #19  
Old March 11th 19, 07:28 PM posted to rec.bicycles.tech
Radey Shouman
external usenet poster
 
Posts: 1,251
Default GPS Units = Show road steepness?

Zen Cycle writes:

On Sunday, March 10, 2019 at 6:35:02 PM UTC-4, Roger Merriman wrote:
Sir Ridesalot wrote:
Talking about GPS units on another thread reminded me of something else I
wondered if they do. Does a bicycle GPS unit show you the steepness of
roads? There's an area that I frequently ride where on road has short but
very steep hills, another road a mile or so east of it has much more
gradual hills whilst a third road to the west of the first one is a major
highway that can be ridden with a bicycle. What I'm wondering is this: if
someone unfamiliar with the area got there and used a GPS unit to show
those three roads, would the GPS unit show them the different gradients
of the roads? Or is that another function that they'd need to download or
otherwise install?

Cheers


Various mapping sites will show the gradient, and some GPS units will show
the gradient, in the same way that it can give improbable maximum speeds
they can also give improbable max gradients or sometimes on very short
ramps not notice it, there is a nasty little ramp nr my folks place, which
is the software flattens claiming 12% when it’s a fair cruel 25/30% even
more cruel this weekend with a 50mph headwind.


It's probably an averaging issue - taking enough samples before and
after the section so that it flattens the pitch.


It's the same basic issue as the speedometer kerfluffle. Numerical
differentiation amplifies noise.

--
  #20  
Old March 11th 19, 08:23 PM posted to rec.bicycles.tech
JBeattie
external usenet poster
 
Posts: 3,898
Default GPS Units = Show road steepness?

On Monday, March 11, 2019 at 11:09:47 AM UTC-7, wrote:
On Monday, March 11, 2019 at 3:18:06 PM UTC+1, duane wrote:
On 11/03/2019 9:24 a.m., wrote:
On Monday, March 11, 2019 at 2:52:23 AM UTC+1, John B. Slocomb wrote:
On Sun, 10 Mar 2019 20:01:13 -0400, Frank Krygowski
wrote:

On 3/10/2019 6:29 PM,
wrote:

GPS can show the actual gradient but it uses some sort of averaging algorithm which means it has a delay. This makes it pretty useless IMO. Besides this what are you gonna do if you know the exact gradient at that moment? GPS can tell you exactly were you are. For navigation you need a routable map and navigation software. Often people have a too high expectations of a GPS based cycling computer and end up never using the navigation capability and just have an expensive cycling computer or head unit as they are called now because speed sensors, cadence sensors, power meters, radar, lights, action camera's, HRM and your phone all connect to the unit and show their information on the head unit or can be operated using the head unit.

What?? No television??

The Electric Bike Worldwide Report predicts that the electric bike
industry is poised to grow to 2 billion by 2050. Eventually 84 million
e-bikes could be sold each year.

One can envision a day when bicycles will be totally enclosed and
equipped with air conditioning and stereophonic sound :-)

One can only assume that once the electric bike is established riding
a bicycle will equate with the exercise value of sitting in front of
the T.V.


--
Cheers,
John B.

40% of the bike sales last year in The Netherlands was an electric assisted bike. Get used to it.


A riding buddy of mine got his wife an e-bike last year. She used to
complain about his spending time on his bike. Now she's the one pushing
to ride. I'm not ready for one but I wouldn't necessarily equate an
e-bike with sitting in front of the T.V.


It is certainly not the same as sitting in front of the TV. You may make fun of it but the introduction of the E bike gave cycling an enormous boost in the last 5 years even here in The Netherlands. That is a good thing. Bike sales are way up.

Lou


I hate people on eBikes. But then again, I hate people on regular bikes. Traffic is traffic. With eBikes, though, you end up with otherwise unskilled riders who ride really fast in bike traffic. Fast dopes. Really fast unassisted riders are generally skilled -- not always, but generally. Imagine a pack of eBikers. It would make a Cat 5 race look safe.

-- Jay Beattie.

 




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