  Thank you very much Robert,

Now I have this error:

 > me <- maxent(bio1res, arb)
Error en .local(x, p, ...) :
   more than half of the presence points have NA predictor values

It could be related to the raster "bio1res"?  The origin of this file is 
.bil files.  Which is the best file format to work with bioclim data?
The plot(bio1res) display with a legend with values from 0 to 50000 and 
the raster is for temperature.

bio1res
class       : RasterLayer
filename    :
nrow        : 382
ncol        : 407
ncell       : 155474
min value   : 47
max value   : 55537
projection  : NA
xmin        : -85.95
xmax        : -82.55833
ymin        : 8.041667
ymax        : 11.225
xres        : 0.008333333
yres        : 0.008333333

Best,

Manuel


On 14/10/2010 02:44 p.m., Robert J. Hijmans wrote:
> I think it should be:
>
> res<- mask(bio1cr, crmask)
>
> On Thu, Oct 14, 2010 at 1:22 PM, Manuel Spínola<mspinola10@gmail.com>  wrote:
>>   Dear list members,
>>
>> I am working with bioclim variables to model species distribution.
>> The files downloaded from Worldclim.org are generic raster files (.bil)
>> I transform this files to raster:
>>
>> bio1<- raster("bio1_23.bil")
>>
>> cr = readOGR(dsn="C:/ProyectoRespacial/EvalHab_reporte",
>> layer="Cr_wgs84_meso")
>>
>> bio1cr<- crop(bio1, cr)
>> crmask<- polygonsToRaster(cr, bio1cr)
>> res<- mask(bio1, crmask)
>> Error en compare(x, mask) : Different bounding box
>>
>> plot(bio1cr) the scale legend shows numbers from 0 to 55000
>>
>> Best,
>>
>> Manuel
>>
>>
>> --
>> *Manuel Spínola, Ph.D.*
>> Instituto Internacional en Conservación y Manejo de Vida Silvestre
>> Universidad Nacional
>> Apartado 1350-3000
>> Heredia
>> COSTA RICA
>> mspinola@una.ac.cr
>> mspinola10@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/>
>>
>>         [[alternative HTML version deleted]]
>>
>>
>> _______________________________________________
>> R-sig-Geo mailing list
>> R-sig-Geo@stat.math.ethz.ch
>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>>
>>


-- 
*Manuel Spínola, Ph.D.*
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspinola@una.ac.cr
mspinola10@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/>

	[[alternative HTML version deleted]]

