[Qgis-user] Keeping only POIs X kms from a trace?

[Matt Boyd]

Winfried,
it's difficult for people to offer help if they don't know where to start,
the knowledge level of the person asking the question is basic input.
I don't think anyone is going to answer a question if someone says they
know nothing about GIS, it's too much work if it sounds like someone needs
to be taught and hasn't started reading the online help or tried out the
online tutorials (I've no idea if there are any). But here goes anyway.

The question you have asked is relatively simple.

load your vector lines - this is your bike route into QGIS. If it comes in
as points you'll need to make them into lines.
load the points you want to sample - your campsites

create a fixed distance buffer around the lines, this will be a polygon (a
closed shape, not a line, lines are different) there's a tool under the
vector menu called fixed distance buffer or something like that.

use this polygon and the intersect or clip tools to select and save the
points you want that are within the buffer you created,save/export those as
gpx.

Good luck.



On Mon, May 8, 2017 at 10:45 PM, Winfried <codecomplete at free.fr> wrote:

> Hello
>
> Archie's Campings* offers a pretty thorough list of campsites in Europe.
>
> Problem is, files are only country-size, so the number of waypoints is
> overwhelming (Here's the UK for instance**).
>
> To plan bike tours, I'd like to…
> 1) import a trace from a GPX file,
> 2) import Archie's list for a given country,
> 3) filter that list to only keep campsites that are 5 kms from the route,
> and
> 4) export the output to a GPX file.
>
> This can be probably be done with QGIS, but I know nothing about GIS :-/
>
> Thanks for any help.
>
> * http://www.archiescampings.eu/
> ** https://s7.postimg.org/4mck58dbf/Archie.s.Campings.UK.png
>
>
>
> --
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