Tolerance not working as intended? about swiftsimplify

[Faydee1220]

I have the same problem, only get two points even tolerance is 0.1

[freeubi]

Same problem here, with 0 tolerance i got only 2 points :S

[koloritcm]

Related to my issue here: #7

Your points differ less than 0.01. A tolerance of 10 seems pretty obvious that it would simplify to only two points.

Maybe you are under the assumption that 10 means 10 meters? The tolerance is in the same unit as the input values, so you have a tolerance of 10 degrees of the earth.

You can't use WGS80 coordinates is you want a consistent tolerance as the conversion between degrees latitude/longitude and meters are different for the two dimensions and also changes for different parts of the world

In your case you could convert the points to MKMapPoint and then find a suitable tolerance by calling MKMapPointsPerMeterAtLatitude(_:) and multiply with your tolerance in meters.

[sungkim23]

Hey Gunnar! Thanks for the help, actually I ended up getting it to work with the following tolerance of 0.00010, I did further research at the time and noticed it was due to how the coordinates were being interpreted xx.xxxxxx instead of xx.xx