Fwd: [Qgis-user] QGIS "Near"

[Zoran Jankovic]

Hi Stefan,

Yes! This is exactly what I was looking for! You were too fast for me, I'm
still on my first step: Python for Dummies :-))
As I can see the main stuff is in "featurefindertool.py"? And it works
through all the features in the selected layer every time?

But, I really do not have that many features, and it takes 2-3 seconds to
find the nearest feature on my, not so very new laptop, in a layer with cca
4200 point features.

Best regards,

PS Stefan, do you have a PayPal account? Or, does anyone know any better way
of transfering (modest, I'm afraid) amount of money? PayPal is limited to
paying only in Croatia...


---
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


On Wed, Oct 20, 2010 at 8:54 PM, Ziegler Stefan <Stefan.Ziegler at bd.so.ch>wrote:

>  Hi Zoran
>
> I had some time left, took all my code snippets and also the one from
> Carson. Please try the plugin "Nearest" that should cover your example 1:
>
> http://www.catais.org/qgis/plugins.xml
>
> regards
> Stefan
>
> -----Ursprüngliche Nachricht-----
> *Von:* Zoran Jankovic [mailto:zoran.jankovic at zisis.hr]
> *Gesendet am:* Mittwoch, 20. Oktober 2010 19:21
> *An:* qgis-user
> *Betreff:* Re: Fwd: [Qgis-user] QGIS "Near"
>
> 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
>>   _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
>
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