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GeoHey-Team / qgis-geohey-toolbox

QGIS geoprocessing plugin tools provided by GeoHey
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why use ’a = 6378245.0‘？ #6

Closed 375000384 closed 11 months ago

375000384 commented 3 years ago

define ellipsoid

a = 6378245.0 f = 1 / 298.3

why use 'a = 6378245.0', rather than ‘a=6378137’ ？ 'a = 6378245.0‘ is Krassovsky ellipsoid ,it is not a WGS84 ellipsoid

warrenwyf commented 3 years ago

That's how the offset algorithm is defined.

yardern commented 11 months ago

Would you be kind to let me know how to use this plugin? I installed it in QGIS 3.32.3-Lima, but I could find it in "Plugins Toolbar".

Thanks.

That's how the offset algorithm is defined.

kerr1024 commented 11 months ago

Would you be kind to let me know how to use this plugin? I installed it in QGIS 3.32.3-Lima, but I could find it in "Plugins Toolbar".

Thanks.

That's how the offset algorithm is defined.

When you installed the plugin, u can find it in the Processing Toolbox.

yardern commented 11 months ago

Would you be kind to let me know how to use this plugin? I installed it in QGIS 3.32.3-Lima, but I could find it in "Plugins Toolbar". Thanks.

That's how the offset algorithm is defined.

When you installed the plugin, u can find it in the Processing Toolbox.

Thanks. My QGIS had "Processing Toolbox" un-checked in the Plugins, so it took me a while to figure out.