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barbeau / gpstest

The #1 open-source Android GNSS/GPS test program
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Accuracy: Graph auto scaling labels don't reflect full precision #576

Open bernieEV opened 2 years ago

bernieEV commented 2 years ago

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

  1. Go to 'Accuracy Screen'
  2. Pull up 'Diagrams'
  3. See 'lower Diagram, vertical deviation'
  4. the auto-scaling is "lazy", see list: Zero line, 0m, 1m, 2m, 2m, 2m, 3m

Expected behavior A clean linear scale

Observed behavior see appended screenshot

GPStest v3.9.16 on Android 12 (stock version) on Google PIXEL 6

What version of GPSTest did you encounter this on (see "Help->About")? What make and model device (e.g., Samsung Galaxy S10) did you encounter this on? What Android version (e.g., Android 10.0) are you running? Is it the stock version from the manufacturer or a custom ROM? What version of Google Play Services is running on your device?

Screenshots:

Can be created by pressing the Volume Down and Power Button at the same time on Android 4.0 and higher. Screenshot_20211226-223227

bernieEV commented 2 years ago

if the full scale is less then 6 m, we need one digit after the decimal point. the unit "meters" could be placed after the label.

barbeau commented 2 years ago

@bernieEV Thanks for flagging this. It's a good problem to have, because it only happens at very low error values 😄. I'm using a library for the graph so I'm not sure how much control I have over how this renders with small values, but I'll take a look.