[Gvsig_english] querying a shapefile

[Simon Cropper (Botanicus Australia Pty Ltd)]

Nik,

My first choice would be approach Nacho (nachouve at gmail.com) about 
getting a precompiled version, along with instruction on how to set it 
up (relatively easy). I have all the pertinent details and files but I 
would need express permission to send you a copy as Nacho bypassed the 
list server when interacting with me (I took this to mean that compiled 
files were not necessarily public). He did post the source code onto the 
public server as noted on my previous post.

Unfortunately I do not use Ubuntu and I have not yet found an easy way 
of compiling java source to a workable JAR file. By all accounts the 
best option is establishing Eclipse IDE (http://www.eclipse.org/) but I 
have not tried this myself.

Cheers Simon

Simon Cropper
Botanicus Australia Pty Ltd
PO Box 160, Sunshine, Victoria 3020.
P: 9311 5822. M: 041 830 3437.
mailto: scropper at botanicusaustralia.com.au 
<mailto:scropper at botanicusaustralia.com.au>
web: www.botanicusaustralia.com.au <http://www.botanicusaustralia.com.au>


On 12/01/2010 2:18 PM, Nik Go wrote:
> My apologies for the oversight. I asked the same question from the
> Quantum GIS mailing list, and I forgot to edit the question. My bad.
>
> Thank you, Simon for answering. I will look into the requirements of
> the new version and see if I could compile Java without trashing my
> system. Would you have any tips for a 64-bit Ubuntu user on getting
> this done?
>
> On 1/12/10, Simon Cropper (Botanicus Australia Pty Ltd)
> <scropper at botanicusaustralia.com.au>  wrote:
>    
>> Nik,
>>
>> This is the mailserver for gvSIG not QGIS.
>>
>> That said, QGIS has the ability to establish distances between polygons.
>> Look in the [Main Menu] [Vector] [Analysis Tools] [Distance matrix]...
>>
>> gvSIG + Sextante also has the ability to make a matrix -- city name
>> along column and row with intersecting cell containing minimum distance.
>>
>> The latest version of Sextante (the one a lot of people are having
>> trouble setting up at the moment) has a tool called "distance and angle"
>> this may also help.
>>
>> Recently I had a need to establish the distance between polygons/points
>> with the output being Unique ID1, Unique ID2, Distance, Bearing, etc...
>> That is, one row per comparison.
>>
>> I received help from Nacho Uve who can be contacted on the Sextante
>> Mailserver. He is developing a routine called CartTools. The Beta
>> version of this program worked really well -- the only problem was that
>> when comparing two polygons that were the same (zero distance) the
>> bearing and angle output were returned as 90° and 0° respectively when
>> it should actually return an error or warning (i.e. these values are not
>> applicable and should not be returned).
>>
>> In this format it is simply a matter of applying the 'x' and 'y'
>> attribute for each city and you have your answer.
>>
>> Nacho has submitted his routine to the Sextante source code repository
>> http://forge.osor.eu/plugins/scmsvn/viewcvs.php/soft/sextante_lib/vectorTools/src/es/unex/sextante/vectorTools/distanceAndAngle/DistanceAndAngleAlgorithm.java?root=sextante&view=markup
>> <http://forge.osor.eu/plugins/scmsvn/viewcvs.php/soft/sextante_lib/vectorTools/src/es/unex/sextante/vectorTools/distanceAndAngle/DistanceAndAngleAlgorithm.java?root=sextante&view=markup>.
>> If you can compile java you will have no problem.
>>
>> Cheers Simon
>>
>> Simon Cropper
>> Botanicus Australia Pty Ltd
>> PO Box 160, Sunshine, Victoria 3020.
>> P: 9311 5822. M: 041 830 3437.
>> mailto: scropper at botanicusaustralia.com.au
>> <mailto:scropper at botanicusaustralia.com.au>
>> web: www.botanicusaustralia.com.au<http://www.botanicusaustralia.com.au>
>>
>>
>> On 12/01/2010 5:11 AM, Nik Go wrote:
>>      
>>> Hello. Happy new year to all.
>>>
>>> I have a shapefile of cities, is it possible to do the following in QGIS
>>>
>>>      * determine and visually display all cities with attribute "x" or "y"
>>>      * find out if the "x" cities share a border with other "x" cities
>>>            o if they do, I want to add an attribute to the database
>>>              indicating it as a neighbor of another "x" city
>>>      * find out if the "y" cities share a border with other "y" cities
>>>            o if they do, I want to add an attribute to the database
>>>              indicating it as a neighbor of another "y" city
>>>
>>> Thank you and regards.
>>>
>>> Nik
>>>
>>>
>>> _______________________________________________
>>> Gvsig_internacional mailing list
>>> Gvsig_internacional at listserv.gva.es
>>> http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional
>>>
>>>        
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