Show us your.......newbie progress! [4 Sep 2012 - 4 Oct 2014]

[Nomadski]

Although I enjoy the fun of Strava, it is a real shame that it isn't more accurate.

Like Ive said in the past, Strava's only real use is to compare your own performance along similar routes. Why they feel they need to change perfectly good data from Garmins I don't know, especially Garmins with sensors on the bike. When you start to notice land height changes (where the data is readily available from professional land surveys) it makes the rest of its data....cheap.

 

[Nigelnaturist]

Like Ive said in the past, Strava's only real use is to compare your own performance along similar routes. Why they feel they need to change perfectly good data from Garmins I don't know, especially Garmins with sensors on the bike. When you start to notice land height changes (where the data is readily available from professional land surveys) it makes the rest of its data....cheap.

even the sensors arn't very accurate at times

 

[RWright]

even the sensors arn't very accurate at times

I have noticed big differences in my sensor readings when storms are moving through the area and also between day and night time but that could have been because of weather as well.

 

[Nigelnaturist]

My data from rwgps gives me 4,388 meters strava 4,477 using the corrected data from garmin.

 

[SWSteve]

Admit it, you didn't go out, you sat on the setee and watched the cricket and the Tour. Seriously, have you tried deleting the ride and re-uploading it?

I spent 5 hours in the same 3 mile stretch of road. It was a long old day, the hangover didn't help at the start. I cannot wait to just smash off miles when this has finished

 

[Nigelnaturist]

I have noticed big differences in my sensor readings when storms are moving through the area and also between day and night time but that could have been because of weather as well.

Temp sensor effects the barometer readings and if quick pressure changes that will too

 

[Nomadski]

My data from rwgps gives me 4,388 meters strava 4,477 using the corrected data from garmin.

Do you know how Strava correct the data? Because its still miles out. On Garmin Connects page they tell you exactly what they do (they ignore the data from the barometer on the unit and use professional land survey data instead). Strava's corrected data is just as useless as its uncorrected data!

 

[Supersuperleeds]

Give her a tip.

Loose Button in the 3:30; it's bound to come off.

 

[Nigelnaturist]

I think it has something to do with height climbed at a given grade, you can do the same in sportstrack, uncorrected data should display as in the file.

 

[Supersuperleeds]

Do you know how Strava correct the data? Because its still miles out. On Garmin Connects page they tell you exactly what they do (they ignore the data from the barometer on the unit and use professional land survey data instead). Strava's corrected data is just as useless as its uncorrected data!

The problem with Strava is it flattens out the small climbs, why it can't just use fixed data I don't know, it cannot be difficult to match gps coordinates to an elevation database.

 

[SWSteve]

So, I went out today to do some hill repeats.
It looks like STRAVA's elevation changes have given me some extra metres again. I don't mind as I was bored out of my mind come the end of it.
At the start of the day I was flagged down by a lady. Her car had a flat, she didn't have a spare or any phone signal. I took all her details and called the RAC at the bottom of the hill (in town) and they were able to come and help her. I don't know why no one else did this for her, I could not have been the first person to have gone past.
On the final repeat, I started talking to a fellow cyclist. He was shocked how many times I had done the repeats, I let him go as I was flagging at this point.

All in all a good day of hill repeats, some photographers also got quite a few snaps of me on a 20% section of the climb going around a section of the Gorge. I wish I had asked for a copy of it.

http://app.strava.com/activities/68514144

edit: oh, and I've almost completed the Rapha Rising.

 

[Nigelnaturist]

So, I went out today to do some hill repeats.
It looks like STRAVA's elevation changes have given me some extra metres again. I don't mind as I was bored out of my mind come the end of it.
At the start of the day I was flagged down by a lady. Her car had a flat, she didn't have a spare or any phone signal. I took all her details and called the RAC at the bottom of the hill (in town) and they were able to come and help her. I don't know why no one else did this for her, I could not have been the first person to have gone past.
On the final repeat, I started talking to a fellow cyclist. He was shocked how many times I had done the repeats, I let him go as I was flagging at this point.

All in all a good day of hill repeats, some photographers also got quite a few snaps of me on a 20% section of the climb going around a section of the Gorge. I wish I had asked for a copy of it.

http://app.strava.com/activities/68514144

edit: oh, and I've almost completed the Rapha Rising.

Have a look on flickr,
I stop for people too, amazed how many get irate when someone brakes down on a slip road beeps does nothing, what is a woman supposed to do push the car on her own

 

[Nomadski]

The problem with Strava is it flattens out the small climbs, why it can't just use fixed data I don't know, it cannot be difficult to match gps coordinates to an elevation database.

That's precisely what Garmin Connect does when you select the corrected elevation option.

This is my Garmin (data straight from the device, elevation correction on) versus Strava data for the year -

Garmin
46 Activities
Distance: 1,229.06 Miles
Time: 88 Hours 18 Mins 24 Secs
Elevation Gain: 48,779 ft

Strava
46 Activities
Distance: 1,229.3 Miles
Time: 89 Hours 55 mins
Elevation Gain: 46,880 ft

So the distance difference is highly negligible, but its stop/start time is quite off (an extra 1 hour 37 mins spent on the saddle) and its elevation data is massively out (lost 1,899 ft - that's over an Empire State Building!). This is data that should be static between them, given the source is the same.

 

[Nigelnaturist]

It could also depend on the precision of the variables the data is loaded into, @SatNavSaysStraightOn is I.T. she should be able to explain, or any one with a programming back ground, I cant remember it all but it has to do with the number of decimals stored in the variable and if you look at a gps point you will see there are quite a few, so a floating point variable is less precise than a double float point, but the later takes more memory, so it comes down to how the algorithms were designed, the same happens is astro software

 

[SWSteve]

Have a look on flickr,
I stop for people too, amazed how many get irate when someone brakes down on a slip road beeps does nothing, what is a woman supposed to do push the car on her own

I may do so tomorrow. Give them a chance to upload them