Re: How to plot outline of overlapping circles

Hi Kristof

You can use grdmath and the operator PDIST to obtain distances to points in
a grid, then you can plot the contour of the desired distance. This will
work if the coverage distance is the same for all the points.

Best regards
Jose
El 09/12/2013 06:45, "Kristof Koch" <[email protected]> escribió:

> Hi Jim,
>
> I thought of your idea
> > […] to plot circles filled with red, then the same circles
> > filled with the background colour but with a smaller diameter […]
> as well.
>
> Unfortunately, these boundaries are not exclusively over water. On land,
> the idea collides with the terrain elevation data. Another problem with
> this approach is the line thickness. On average, the change in line
> thickness due to projection distortion is negligible, but it looks quite
> strange in the more "extreme" cases (i.e. close to the Poles), depeding on
> the type of projection used.
>
> Nonetheless thank you for your swift answer.
>
> All the best,
> Kristof
>
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