connection error when calling maxent()

It appears that the MaxEnt output file gets overwritten by another process.
Yes, I also have this impression after some testing (e.g. the temporary raster directories got emptied every time I started a new R raster session in parallel).

The problem disappeared when I updated to R 2.13.2, so no more worries from my side!

Many thanks for the help and the development of raster and associates - it's just great!

Rafael

Rafael,

Please send more info about what you are doing. It appears that the MaxEnt output file gets overwritten by another process. Can you also send your sessionInfo() (after first updating R to a more recent version)?

Robert

On Wed, Jan 4, 2012 at 8:52 AM, rafael.wueest <rafael.wueest at wsl.ch> wrote:
Hi Folks

when I am trying to call the maxent() function within a function I created,
I am getting the following error:

Error in file(con, "r") : cannot open the connection
In addition: Warning message:
In file(con, "r") :
 cannot open file
'/var/folders/ft/fthJYD+6GkCvmcCArZBaQU++waU/-Tmp-/R_raster_tmp/maxent/10943312360/species.lambdas':
No such file or directory

I am here also pasting some output of
traceback()
7: file(con, "r")
6: readLines(paste(dirout, "/species.lambdas", sep = ""))
5: unlist(readLines(paste(dirout, "/species.lambdas", sep = "")))
4: .local(x, p, ...)
3: maxent(background, occ, args = me.args) at run4models_restios.r#558
...

I am using JGR on a Mac and downloaded the newest dismo (CRAN sources) and
maxent version (see below).

Can anyone help me? I am happy to provide more detailed information...

Rafa

maxent()
This is MaxEnt version 3.3.3k

sessionInfo()
R version 2.12.2 (2011-02-25)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

locale:
[1] C

attached base packages:
[1] splines   stats     graphics  grDevices utils     datasets  methods
[8] base

other attached packages:
 [1] gbm_1.6-3.1           survival_2.36-5       gam_1.04.1
 [4] PresenceAbsence_1.1.5 maptools_0.8-10       lattice_0.19-33
 [7] foreign_0.8-42        rgdal_0.6-33          dismo_0.7-14
[10] raster_1.9-13         sp_0.9-84             JGR_1.7-7
[13] iplots_1.1-4          JavaGD_0.5-4          rJava_0.9-1

loaded via a namespace (and not attached):
[1] grid_2.12.2  tools_2.12.2
Warning message:
'DESCRIPTION' file has 'Encoding' field and re-encoding is not possible

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Rafael W?est
Swiss Federal Research Institute WSL
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rafael.wueest at wsl.ch
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connection error when calling maxent()

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