[Qgis-user] Wrong area with OTF activated

[Gino Pirelli]

what is your destination (OTF) crs?


On 3 July 2014 17:37, Carlos Cerdán <sig.upagu at gmail.com> wrote:

> Dear QGIS users
>
> I was preparing a question about calculating areas because I had an issue:
> calculated area in QGIS was different (and wrong) that ArcGIS (right value)
> ... but i found the answer. It can be useful for your work (as it was for
> mine) so here is a comment:
>
> I was working in UTM src (SRC = 32717, in notification, down right
> corner), but with "on the fly SRC transformation" activated. When I use
> field calculator, the value of area is greater (and wrong) than when it's
> calculated with "on the fly.." deactivated (right area value).
>
> So, in QGIS, the right way to make geometry calculus is matching SRC of
> your project and your layers and working deactivating "on the fly..."
>
> Greetings
>
> Carlos
>
>
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