[Gvsig_english] geoprocessing

[Sergio Clark]

Hi,

Yes, maybe the names are not so clear ;-), but 'Map Units' are the data 
(cartography) units and these don't must be an election from user, and 
'Measuring Units' are the units that user wants to work with (not only 
for measuring tools, also for every calculation gvSIG does in 
geoprocessing, tables, etc.), and these are shown in the state bar of 
the View.

Best regards,
Sergio


Mithoefer, Klaus escribió:
> Hi Sergio,
>
> Thanks for the reply. If I leave 'Map Units' as Meters and 'Measuring Units' as Kilometers I get the correct result, that is true. But this is exactly what surprises me, that these two settings influence each other. To me, 'Map Units' is the basic setting for the map which influences the geoprocessing. If its Kilometer, the buffer should be 50 km, if its meter, the buffer should be 50 meter, no matter what kind of 'Measuring Units' is use later to measure the buffer.
>
> Nevertheless, I get the result correct but I have a problem understanding the circumstances.
>
> Thanks a gain and best regards,
>
> Klaus
>
>
> -----Original Message-----
> From: gvsig_internacional-bounces at runas.cap.gva.es [mailto:gvsig_internacional-bounces at runas.cap.gva.es] On Behalf Of Sergio Clark
> Sent: Wednesday, March 25, 2009 12:17
> To: Users and Developers mailing list
> Subject: Re: [Gvsig_english] geoprocessing
>
> Hi Klaus,
>
> I think the problem is because you have changed 'Map Units' to 
> Kilometers, and maybe this is not "true" (this means in what units have 
> been made this cartography).
>
> If you leave 'Map Units' as Meters and 'Measuring Units' as Kilometers, 
> then your buffer should be correct (0.05 km=50 meters).
>
> Please try it and let us know if it works for you.
>
> Regards,
> Sergio
>
>
>
> Mithoefer, Klaus escribió:
>   
>> Maybe I was unclear: The problem is that if I choose Kilometers and 50 units  I get a buffer of 50 Meters, not Kilometers. If I want Kilometers I have to change the map units to Meter (!). That does not make sense to me. But I'll download 1228 to check.
>>     
>
>   
>> Regards,
>>
>> Klaus
>>
>> -----Original Message-----
>> From: gvsig_internacional-bounces at runas.cap.gva.es [mailto:gvsig_internacional-bounces at runas.cap.gva.es] On Behalf Of Javier Galán
>> Sent: Wednesday, March 25, 2009 11:19
>> To: Users and Developers mailing list
>> Subject: Re: [Gvsig_english] geoprocessing
>>
>> Dear Klaus:
>>
>> May be I don't understand what you said. I make some test at the 1.9 BN 
>> 1228 and, for my, works all right. When you make a buffer, it makes it 
>> for "50" units If you change the view unit doesn't matter because that 
>> happens is that you are saying that this 50 units are meters, 
>> kilometers, miles....
>>
>> If you have any question just ask.
>>
>> Regards
>>
>> Mithoefer, Klaus wrote:
>>   
>>     
>>> Dear all,
>>>
>>>  
>>>
>>> I use 1.9 build 1221 and tried the geoprocessing / buffer tool with 
>>> the following view setting:
>>>
>>>  
>>>
>>>  
>>>
>>> If I buffer a shape (with the correct projection) now with a distance 
>>> of 50, the resulting buffer zone is 50 Meter not Kilometer. If I 
>>> change the map units to Meter I get a buffer of the 50 km. Why that? 
>>> Is there a bug? To me this does not make sense. Any help?
>>>
>>>  
>>>
>>> Kind regards,
>>>
>>>  
>>>
>>> Klaus
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> Gvsig_internacional mailing list
>>> Gvsig_internacional at runas.cap.gva.es
>>> http://runas.cap.gva.es/mailman/listinfo/gvsig_internacional
>>>   
>>>     
>>>       
>>   
>>     
>
>
>   


-- 

Sergio Clark
Equipo gvSIG
IVER T.I., S.A.
www.iver.es
www.gvsig.com


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