Honestly Paul, I don't know. The tif is a result from the kriging in
Quantum GIS.
Is very strange, right?
Manuel
On 07/11/2010 07:03 a.m., Paul Hiemstra wrote:
> So what is in the three bands?
>
> Paul
>
> On 11/07/2010 02:06 PM, Manuel Spínola wrote:
>> Species richness (from 3 to 20 more or less)
>>
>> On 07/11/2010 06:46 a.m., Paul Hiemstra wrote:
>>> What is the data captured by the tif file?
>>>
>>> Paul
>>>
>>> On 11/07/2010 12:45 PM, Manuel Spínola wrote:
>>>> Thank you very much Paul.
>>>>
>>>> This is the data frame that I created
>>>>
>>>> > head(riquezakrig_df)
>>>> band1 band2 band3 x y
>>>> 269 1.760396 1.620212 1.272875 460590.1 1216391
>>>> 1686 1.760396 1.620212 1.272875 460540.1 1216341
>>>> 1687 1.760396 1.620212 1.272875 460590.1 1216341
>>>> 3103 1.760396 1.620212 1.272875 460490.1 1216291
>>>> 3104 1.760396 1.620212 1.272875 460540.1 1216291
>>>> 3105 1.760396 1.620212 1.272875 460590.1 1216291
>>>>
>>>>
>>>> You suggest to make a new column with the color, but I don't
>>>> understand which information should I provide to the new column.
>>>>
>>>> Best,
>>>>
>>>> Manuel
>>>>
>>>>
>>>> On 07/11/2010 04:00 a.m., Paul Hiemstra wrote:
>>>>> Hi Manuel,
>>>>>
>>>>> Please do not respond to me alone, include the mailing list in the
>>>>> cc. You waste the option of someone else answering your question
>>>>> and the answers are not stored in the archives for other people.
>>>>>
>>>>> But back to your question. The tiff file has 3 bands, rgb bands.
>>>>> Probably the contents in those bands is a number between 0 and
>>>>> 255, but you do not specify this in your mail. In this case the
>>>>> tiff file does not contain the 'real' values but is a picture. So
>>>>> drawing individual bands does not make sense. What you could try
>>>>> is to construct a new column in the dataset with the color and try
>>>>> to use in the aes() argument (col = col, where col is the name of
>>>>> the column with the color).
>>>>>
>>>>> cheers,
>>>>> Paul
>>>>>
>>>>>
>>>>> On 11/06/2010 03:03 PM, Paul Hiemstra wrote:
>>>>>> Gpplot cannot plot SpatialPixelsDataFrame's in one go. You need to
>>>>>> convert the grid to a data frame.
>>>>>>
>>>>>> An example using the meuse dataset:
>>>>>>
>>>>>> library(sp)
>>>>>> library(ggplot2)
>>>>>> data(meuse.grid)
>>>>>> gridded(meuse.grid) = ~x+y
>>>>>> summary(meuse.grid)
>>>>>>
>>>>>> meuse.grid_df = as(meuse.grid, "data.frame")
>>>>>>
>>>>>> # Now make a plot with ggplot
>>>>>> p = ggplot(aes(x = x, y = y, fill = dist), data = meuse.grid_df) +
>>>>>> geom_tile()
>>>>>> print(p)
>>>>>>
>>>>>> # Add some tricks specially suitable for
>>>>>> # spatial plots
>>>>>> print(p +
>>>>>> scale_x_continuous('', labels = NA, breaks = NA) +
>>>>>> scale_y_continuous('', labels = NA, breaks = NA) +
>>>>>> opts(aspect.ratio = 1, alpha = 0.5))
>>>>>>
>>>>>> cheers,
>>>>>> Paul
>>>>>>
>>>>>> On 11/06/2010 02:28 PM, Manuel Spínola wrote:
>>>>>>
>>>>>>> Thank you very much Paul.
>>>>>>>
>>>>>>> With plot I got a black polygon and with spplpot I got:
>>>>>>>
>>>>>>>
>>>>>>>> spplot(riquezakrig)
>>>>>>>>
>>>>>>> Error: cannot allocate vector of size 22.6 Mb
>>>>>>>
>>>>>>> with image show me what I want but no legend.
>>>>>>>
>>>>>>> Any specific geom to plot with ggplot?
>>>>>>>
>>>>>>> Best,
>>>>>>>
>>>>>>> Manuel
>>>>>>>
>>>>>>> On 06/11/2010 06:46 a.m., Paul Hiemstra wrote:
>>>>>>>
>>>>>>>> On 11/06/2010 11:15 AM, Manuel Spínola wrote:
>>>>>>>>
>>>>>>>>> Dear list members,
>>>>>>>>>
>>>>>>>>> I read a .tif file with readGDAL.
>>>>>>>>> What is the best way to display it?.
>>>>>>>>>
>>>>>>>>>
>>>>>>>> spplot or ggplot
>>>>>>>>
>>>>>>>>> I tried function image but there is no legend.
>>>>>>>>>
>>>>>>>>>
>>>>>>>> true
>>>>>>>>
>>>>>>>>> I tried plot and spplot but I couldn't get them to work.
>>>>>>>>>
>>>>>>>>>
>>>>>>>> why not? What error? What version of R and sp? You're not giving us
>>>>>>>> any information that could give us a clue to what's going wrong.
>>>>>>>>
>>>>>>>> cheers,
>>>>>>>> Paul
>>>>>>>>
>>>>>>>>> Any help will be appreciated.
>>>>>>>>>
>>>>>>>>> Best,
>>>>>>>>>
>>>>>>>>> Manuel
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> R-sig-Geo mailing list
>>>>>>>>> R-sig-Geo@stat.math.ethz.ch
>>>>>>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>>>>>>>>
>>>>>>>>>
>>>>>>>> --
>>>>>>>> Drs. Paul Hiemstra
>>>>>>>> Department of Physical Geography
>>>>>>>> Faculty of Geosciences
>>>>>>>> University of Utrecht
>>>>>>>> Heidelberglaan 2
>>>>>>>> P.O. Box 80.115
>>>>>>>> 3508 TC Utrecht
>>>>>>>> Phone: +3130 253 5773
>>>>>>>> http://intamap.geo.uu.nl/~paul
>>>>>>>> http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
>>>>>>>>
>>>>>>> --
>>>>>>> *Manuel Spínola, Ph.D.*
>>>>>>> Instituto Internacional en Conservación y Manejo de Vida Silvestre
>>>>>>> Universidad Nacional
>>>>>>> Apartado 1350-3000
>>>>>>> Heredia
>>>>>>> COSTA RICA
>>>>>>> mspin...@una.ac.cr
>>>>>>> mspinol...@gmail.com
>>>>>>> Teléfono: (506) 2277-3598
>>>>>>> Fax: (506) 2237-7036
>>>>>>> Personal website: Lobito de río
>>>>>>> <https://sites.google.com/site/lobitoderio/>
>>>>>>> Institutional website: ICOMVIS<http://www.icomvis.una.ac.cr/>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> R-sig-Geo mailing list
>>>>>> R-sig-Geo@stat.math.ethz.ch
>>>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Drs. Paul Hiemstra
>>>>> Department of Physical Geography
>>>>> Faculty of Geosciences
>>>>> University of Utrecht
>>>>> Heidelberglaan 2
>>>>> P.O. Box 80.115
>>>>> 3508 TC Utrecht
>>>>> Phone: +3130 253 5773
>>>>> http://intamap.geo.uu.nl/~paul
>>>>> http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
>>>>
>>>>
>>>> --
>>>> *Manuel Spínola, Ph.D.*
>>>> Instituto Internacional en Conservación y Manejo de Vida Silvestre
>>>> Universidad Nacional
>>>> Apartado 1350-3000
>>>> Heredia
>>>> COSTA RICA
>>>> mspin...@una.ac.cr
>>>> mspinol...@gmail.com
>>>> Teléfono: (506) 2277-3598
>>>> Fax: (506) 2237-7036
>>>> Personal website: Lobito de río
>>>> <https://sites.google.com/site/lobitoderio/>
>>>> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>
>>>
>>>
>>> --
>>> Drs. Paul Hiemstra
>>> Department of Physical Geography
>>> Faculty of Geosciences
>>> University of Utrecht
>>> Heidelberglaan 2
>>> P.O. Box 80.115
>>> 3508 TC Utrecht
>>> Phone: +3130 253 5773
>>> http://intamap.geo.uu.nl/~paul
>>> http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
>>
>>
>> --
>> *Manuel Spínola, Ph.D.*
>> Instituto Internacional en Conservación y Manejo de Vida Silvestre
>> Universidad Nacional
>> Apartado 1350-3000
>> Heredia
>> COSTA RICA
>> mspin...@una.ac.cr
>> mspinol...@gmail.com
>> Teléfono: (506) 2277-3598
>> Fax: (506) 2237-7036
>> Personal website: Lobito de río
>> <https://sites.google.com/site/lobitoderio/>
>> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>
>
>
> --
> Drs. Paul Hiemstra
> Department of Physical Geography
> Faculty of Geosciences
> University of Utrecht
> Heidelberglaan 2
> P.O. Box 80.115
> 3508 TC Utrecht
> Phone: +3130 253 5773
> http://intamap.geo.uu.nl/~paul
> http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770
--
*Manuel Spínola, Ph.D.*
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspin...@una.ac.cr
mspinol...@gmail.com
Teléfono: (506) 2277-3598
Fax: (506) 2237-7036
Personal website: Lobito de río
<https://sites.google.com/site/lobitoderio/>
Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>
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