Power spikes in CSV files not found in IBR files

Power spikes in CSV files not found in IBR files

Postby blp » Thu May 04, 2017 8:00 pm

When I export csv file for Strava and Golden Cheetah, I often get power data anomalies that is completely inaccurate.

For example, in the attached ibr file, the max is 583W according to Isaac and in the exported csv file is is 1733W. There are 5 or 6 anomalies in the csv file.

The only adjustment I made to the ibr file is correct starting and ending elevation in Analyze Route.

This happens frequently. Why is that?
Attachments
iBike_05_04_2017_1415_38_km_HiDef.csv
Corrected elevation in Analyze Route
(676.53 KiB) Downloaded 7 times
iBike_05_04_2017_1415_38_km_HiDef.ibr
Corrected elevation in Analyze Route
(1.18 MiB) Downloaded 8 times
blp
 
Posts: 114
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada

Re: Power spikes in CSV files not found in IBR files

Postby Velocomp » Fri May 05, 2017 8:53 am

You have two speed glitches. Why? I don't know. These cause the watts glitches. You can find them by setting filtering to zero.

The simple thing to do is to edit out the glitches with the Edit command.
Attachments
Screen Shot 2017-05-05 at 8.49.45 AM.png
Screen Shot 2017-05-05 at 8.49.45 AM.png (30.01 KiB) Viewed 273 times
Screen Shot 2017-05-05 at 8.50.00 AM.png
Screen Shot 2017-05-05 at 8.50.00 AM.png (31.76 KiB) Viewed 273 times
John Hamann
Velocomp
Velocomp CEO
 
Posts: 4196
Joined: Fri Jan 11, 2008 9:43 am

Re: Power spikes in CSV files not found in IBR files

Postby blp » Fri May 05, 2017 2:53 pm

How do I
Velocomp wrote:edit out the glitches with the Edit command
?
I know once you tell me it will be obvious.

Thanks John.
blp
 
Posts: 114
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada

Re: Power spikes in CSV files not found in IBR files

Postby Velocomp » Fri May 05, 2017 3:51 pm

1) Set graph filtering to zero

2) Set scale to the minimum amount (2 min, or 1 mile/KM)

3) scroll to the place where the blip is

4) highlight the blip with your cursor. The area will be highlighted in blue

5) Use the command "File/Combine-Split/Delete Selection"
Attachments
Screen Shot 2017-05-05 at 3.49.54 PM.png
Screen Shot 2017-05-05 at 3.49.54 PM.png (329.47 KiB) Viewed 268 times
John Hamann
Velocomp
Velocomp CEO
 
Posts: 4196
Joined: Fri Jan 11, 2008 9:43 am

Re: Power spikes in CSV files not found in IBR files

Postby blp » Fri May 05, 2017 3:57 pm

Done. Thanks again.
blp
 
Posts: 114
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada


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