Bruce,
Ok thanks.. that explains a lot. So really my only course of action is
to transform to UTM, do my buffer, then transform back to WGS84?
Blake
Bruce Rindahl wrote:
A nautical mile is 1 minute measured along a great circle on a sphere
(such as the equator or a longitude line). Thus your query will not
work- it will be too short in the x direction. If you are using UTM a
nautical mile is about 1852 meters.
Bruce
Blake Crosby wrote:
I'm trying to create "circles" by using the buffer function around a
point.
The radius values i'm working with are in nautical miles. The
definition of a nautical mile is 1 minute of 1 degree.
Since this unit of measurement is based on a degree, and WSG84 is
based on degrees of lat/long (and not meters like UTM) will the
following be valid for a circle with a radius of 2 nautical miles
around point (72.3,-45.3)?
st_buffer(st_geomfromtext('POINT(-45.3 72.3)', 4326), 0.0166667*2)
I'm trying to troubleshoot a problem I'm having and want to rule out
any issues with my usage of buffer.
Blake
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