Fwd: [Qgis-user] QGIS "Near"

[Zoran Jankovic]

Hi Joe,


On Wed, Oct 20, 2010 at 5:06 PM, Joe Larson <joelarso at gmail.com> wrote:

> Does the function 'snapWithContext'
>
> http://doc.qgis.org/head/classQgsVectorLayer.html#733b974dce13d587e05cf3d4fc24f208
> which "Snaps to segment or vertex within given tolerance." seem like
> what you're looking for? I came across it while trying to get Quantum
> Navigator working recently...seemed relative, but I'm no expert!
>
>
This is similar to the mentioned solution with selecting by radius, or
changing the tolerance of ID tool. Close, but no cigar. Since this is not
very urgent, I've decided to continue pursuing that outlined solution Carson
gave, and write a plugin i Python based on that. Since I actually never used
Python before, it may take a while, but hey, I get to learn sth. new :-).
I never got the word back from Carson, has he developed anything along these
lines, but I have to presume he didn't...
Anyone interested in joning me, or even earning some money, is still invited
to jump on board. My GIS implementation project is well on the way, and it
seems there'll even be some money involved :-).

Zoran

~joe
>
> On Tue, Oct 19, 2010 at 9:55 AM, Andreas Neumann <a.neumann at carto.net
> >wrote:
>
> > Hi Zoran,
> >
> > I believe the infrastructure of what you want is already wihtin the
> > selection and identify tools in QGIS. Isn't this almost implemented in
> the
> > current identify tool?
> >
> >
> It sort of is, but not completely. Identify will ID all the features within
> certain radios (percentage of extent), but it will ID _all_ of the features
> within this radius. I only need the nearest, no matter how far away... Let
> us say it is, for simplicity, within current extent.
>
>
> > The current identify tool selects "near" or "close by" features within a
> > certain tolerance. This tolerance can be set in "Options" --> "Map tools"
> > "search radius". I believe it currently only effects the identify tool.
> Do
> > you want the same tolerance also be used for the click-selection tool?
> >
> >
> Look above. This could be useful, but it is not the functionality I'm
> currently looking after.
>
>
> > Are you also aware that in QGIS 1.6 there are new selection tools?
> >
> > * by click
> > * by rectangle
> > * by polygon
> > * by freehand
> > * by radius
> >
> >
> Yup, these are great, but they all select _multiple_ features within
> radius,
> rectangle, etc.
>
>
> > Maybe this also helps to address your needs?
> >
> > Of course you can combine it with previous selections by pressing the
> ctrl
> > key.
> >
> >
>
> BR,
>
>
> ---
> Zoran Jankovic
> ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and
> Consulting
>
> http://www.zisis.hr
>
> M: 00 385 98 682 902
> T:  00 385 44 683 374
>
> A. Senoe 4
> 44320 Kutina
> Croatia
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