[Gvsig_english] raster iamge wrong band value

[Guillermo Tamburini]

Sorry but,

did you check my last proposal? Or was I wrong?

This is an example of my result.

Regards.

Mithoefer, Klaus wrote:
> Thanks a lot Benjamin, but It didn't help.
>
> Kind regards,
>
> Klaus
>
> -----Original Message-----
> From: gvsig_internacional-bounces at listserv.gva.es [mailto:gvsig_internacional-bounces at listserv.gva.es] On Behalf Of Benjamin Ducke
> Sent: Thursday, July 01, 2010 12:54 AM
> To: Users and Developers mailing list
> Subject: Re: [Gvsig_english] raster iamge wrong band value
>
> Have you tried updating the layer's band statistics after
> importing the raster?
>
> Ben
>
> ----- Original Message -----
>   
>> Thank you Guillermo and Vincent!
>>
>> I guess Vincent might be right. The data source I am using can be
>> found on the web at
>> ftp://guestglobcover:Pir8Eefo@us-ext-nas.eo.esa.int/regional/07_Globcover_200412_200606_V2.2_Africa.zip
>> I use the file GLOBCOVER_200412_200606_V2.2_Africa_Reg.tif from this
>> package which is an 8 bit unsigned file format. It seems really that
>> gvSIG is interpreting this as 8 bit signed.
>>
>> I tried to convert is using GDAL to Eras IMG, but the effect remains.
>>
>> Thank you.
>>
>> Klaus
>>
>>
>> -----Original Message-----
>> From: gvsig_internacional-bounces at listserv.gva.es
>> [mailto:gvsig_internacional-bounces at listserv.gva.es] On Behalf Of
>> Guillermo Tamburini
>> Sent: Wednesday, June 30, 2010 14:46
>> To: Users and Developers mailing list
>> Subject: Re: [Gvsig_english] raster iamge wrong band value
>>
>> hi,
>>
>> I have no idea what could be your problem. And i can not test with
>> other softwares because I haven't it now.
>>
>> Well, my only proposal is that you try to make sure that the different
>> software are understanding the data in the same data type. Raster
>> layers could be byte, float, integer... Or to export the data to other
>> formats for testing if the result is always the same.
>>
>> From gvSIG you could check the data type in the general tab of the
>> layer proprieties. May be in ESRI and in that case you get only real
>> positive numbers, and gvSIG is understanding numbers up and down the
>> zero. In that case you would obtain the data moved a half to the
>> negative values.
>>
>> If you want you can send us some data example for testing it.
>>
>> Best regards.
>>
>> Mithoefer, Klaus wrote:
>>     
>>> Dear List,
>>>
>>> I use globecover vegetation data. When I try to retrieve the band
>>> value by using the information picker or assign values to a point
>>> layer I get the wrong value (e.g. for lakes I get-46 instead of
>>> 210). I compared this with ArcGIS and FWtools.
>>>
>>> I tried gvSIG 1.2, 1.9 and 2010 OADE with Geotif and Erdas IMG
>>> format. They all do the same. What is the problem?
>>>
>>> Thank you,
>>>
>>> Klaus
>>>
>>> Klaus Mithöfer
>>> Geographic Information Systems (GIS) Officer
>>> icipe - International Centre of Insect Physiology and Ecology
>>> P.O. Box 30772 - 00100
>>> Nairobi, Kenya
>>> Phone: +254-20-8632000, Extn. 2147
>>> Fax: +254-20-8632001/2
>>> Mobile: +254-724-308404
>>> E-Mail: kmithoefer at icipe.org
>>> web: www.icipe.org
>>>
>>>
>>> ----------------------------------------------------------------------------
>>> This position is supported by German development cooperation //
>>> Centre for international Migration and Development -
>>> http://www.cimonline.de/en/index.asp
>>>
>>> Klaus.mithoefer at cimonline.de
>>>
>>>
>>> _______________________________________________ Gvsig_internacional
>>> mailing list
>>> Gvsig_internacional at listserv.gva.es
>>> http://listserv.gva.es/cgi-bin/mailman/listinfo/gvsig_internacional
>>>
>>>
>>>
>>>       
>> -- Guillermo Tamburini Beliveau
>> Proyecto gvSIG
>> Consellería de Infraestructuras y Transportes (GVA)
>> Valencia (Spain)
>>
>>
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>
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-- 
Guillermo Tamburini Beliveau
Proyecto gvSIG 
Consellería de Infraestructuras y Transportes (GVA) 
Valencia (Spain) 
 

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