[Qgis-user] Mercator projection that shrinks toward pole

[b.j.kobben at utwente.nl]

I am sorry, but that makes no sense. If you scale down the top or bottom
part of a Mercator projected map, it looses the one thing it's useful for
in nautical apps, namely that a compass course is depicted as a straight
line in any direction...


Barend

On 04-02-13 09:49, "feverzsj" <feverzsj at hotmail.com> wrote:

>hi, b.j.kobben
>>> Well, if it's shrinking towards the poles, it basically is not a
>>>Mercator
>>> projection (at least not the traditional normal Mercator where the
>>> cylinder is wrapped around the Equator)...
>
>It shrinks in a way that the whole canvas is scaled down. Considering the
>Mercator is always recommended for nautical application, it should be
>Mercator projection with some post process.
>
>>> Which "nautical chart viewer" did you see this in...?
>
>For example, Transas's ECDIS demo, DEMO_ECDIS_2519.iso :
>http://www.transas.com/support/ecdis_demo/
>
>
>
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