Dear R-helpers,
I can not invoke maxent() in Mac OSX. Could you give me any directions
on that? Thank you in advance.
Here is my info:
# (1) the error
> me <- maxent(predictors, occtrain, factors='biome')
me <- maxent(predictors, occtrain, factors='biome')
Error in .jcall(mxe, "S", "fit", c("autorun", "-e", afn, "-o", dirout, :
java.lang.NoClassDefFoundError: Could not initialize class
density.DirectorySelect
# (2) the variables for maxent: predictors, and occtrain
> summary(predictors)
summary(predictors)
Cells: 35712
NAs : 0 0 0 0 0 0 0 0 0
1 2 3 4 5 6 7 8 9
Min. -23.0 0.0 0.0 0.0 97.0 -207 64.0 -66.0 1.000
1st Qu. 171.0 715.5 317.0 30.0 306.0 29 132.0 213.0 1.000
Median 230.0 1271.0 513.0 87.0 322.0 131 183.0 249.0 4.000
Mean 209.3 1364.0 570.3 136.3 314.4 103 210.4 225.9 5.135
3rd Qu. 257.0 1879.0 834.0 216.0 336.0 188 275.0 262.0 8.000
Max. 289.0 7091.0 2458.0 1496.0 422.0 242 449.0 322.0 14.000
summary based on a sample of 5000 cells, which is 14.0008960573477 %
of all cells
> summary(occtrain)
summary(occtrain)
lon lat
Min. :-85.93 Min. :-23.450
1st Qu.:-79.47 1st Qu.: -2.750
Median :-75.58 Median : 5.300
Mean :-72.22 Mean : 2.823
3rd Qu.:-65.40 3rd Qu.: 9.150
Max. :-46.73 Max. : 13.950
# (3) my OS and R version
> version
version
_
platform x86_64-apple-darwin9.8.0
arch x86_64
os darwin9.8.0
system x86_64, darwin9.8.0
status
major 2
minor 12.1
year 2010
month 12
day 16
svn rev 53855
language R
version.string R version 2.12.1 (2010-12-16)
> sessionInfo()
sessionInfo()
R version 2.12.1 (2010-12-16)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
locale:
[1] en_US/en_US/en_US/C/en_US/en_US
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] evaluate_0.3 dismo_0.5-14 rJava_0.8-8 raster_1.7-29 sp_0.9-76
loaded via a namespace (and not attached):
[1] grid_2.12.1 lattice_0.19-17 plyr_1.4 stringr_0.4
[5] tools_2.12.1
--
Jian-Feng, Mao
the Institute of Botany,
Chinese Academy of Botany,
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