Lat/Lon need to be constrained to x digits after the decimal

NextDroid / potree

WebGL point cloud viewer for large datasets

http://potree.org

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Lat/Lon need to be constrained to x digits after the decimal #347

Closed jstrinkaND closed 2 years ago

jstrinkaND commented 3 years ago

saying that something is at

latitude 42.48505783081055 longitude -83.083862304687

in our visualizer is nonsense. That is sub-mm size.

Please figure out the appropriate number of digits, then show the appropriate numbers.

dgandhiAM commented 3 years ago

@corylangenbachND Need to figure out what approach to take to determine the number of digits

bcasselsND commented 3 years ago

7 decimal places gives just over 1cm resolution.

julia> earthRadius = 6.371e6
6.371e6

julia> earthDiameter = earthRadius * 2pi
4.003017359204114e7

julia> cm = .01
0.01

julia> cmFraction = cm / earthDiameter
2.498115571996474e-10

julia> cmFraction * 360
8.993216059187307e-8

bcasselsND commented 3 years ago

@jallen-NextDroid Please show @elmassihgND where the latitude and longitude are shown. @elmassihgND I suggest you use .toFixed(7) to print these out.

jallen-NextDroid commented 3 years ago

@elmassihgND They're shown in src/viewer/PropertyPanels/MeasurePanel.js. The function is createAttributesTable To see the longitude/latitude in potree, you can place a measurement point (under Tools -> Measurements in the sidebar). Then scroll down in the sidebar and information is show for that point under Properties.