The talk submission for the big-data Apache Conference (Vancouver) has
been accepted:

    Geospatial Track - Hiding some of geospatial complexity

The talk will explain issues related to "referencing by coordinates"
like legal boundaries expressed in legacy systems (NAD27, NTF...) or
water apparently flowing toward up under gravity (because of ellipsoid
not matching well the real surface), and how users can just take a code
like "EPSG:5624" and let SIS do the rest of the work. Other issues like
envelope crossing the anti-meridian will also be reminded.

An other email later today will give some tips for those who would like
to start experimenting EPSG codes with SIS.

    Martin


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