r - Compression issue when saving anR project -

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i solved problem moving r installation directory out of disk c. joris great suggestions! think r core team should take bug , against protecting mechanism of windows xp.

dear community:

while using biomod packages in r, following problem:

error in xzfile(file, "wb", compression = 9) : cannot open connection in addition: warning message: in xzfile(file, "wb", compression = 9) : cannot initialize lzma encoder, error 5

it said author of package , in file of "save" problem should caused lack of permission write. however, logging in administative account , have assess operations, have no idea problem is. can me out? need run package now. in advance~

sincerely, marco

below illustration in file of "save":

the common reason failure lack of write permission in current directory. 'save.image' , saving @ end of session shown messages like

    error in gzfile(file, "wb") : unable open connection      in addition: warning message:      in gzfile(file, "wb") :        cannot open compressed file '.rdatatmp',        probable reason 'permission denied'  defaults changed use compressed saves 'save' in  2.3.0 , 'save.image' in 2.4.0.  recent version of r can  read compressed save files, , compressed file can  uncompressed (by 'gzip -d') use old versions of r.*

sorry ommision of information: here sessioninfo():

> sessioninfo() r version 2.12.2 (2011-02-25) platform: i386-pc-mingw32/i386 (32-bit)  locale: [1] lc_collate=chinese_people's republic of china.936  [2] lc_ctype=chinese_people's republic of china.936    [3] lc_monetary=chinese_people's republic of china.936 [4] lc_numeric=c                                       [5] lc_time=chinese_people's republic of china.936      attached base packages: [1] splines   stats     graphics  grdevices utils     datasets  methods   [8] base       other attached packages:  [1] biomod_1.1-6.8     foreign_0.8-42     gam_1.04            [4] randomforest_4.6-2 mda_0.4-1          class_7.3-3         [7] gbm_1.6-3.1        lattice_0.19-17    mass_7.3-11        [10] design_2.3-0       hmisc_3.8-3        survival_2.36-5    [13] rpart_3.1-48       nnet_7.3-1         ade4_1.4-16        [16] rgdal_0.6-33       dismo_0.5-19       rjava_0.9-0        [19] raster_1.7-47      sp_0.9-78               loaded via namespace (and not attached):     [1] cluster_1.13.3 grid_2.12.2    tools_2.12.2

now found problem come form lzma encoder in doing "save":

>  x<-runif(100) >  save(x, file = "f:/test.gzip", compress='gzip') >  save(x, file = "f:/test.xz", compress='xz') error in xzfile(file, "wb", compression = 9) : cannot open connection >

i had similar issue when trying project new scenario (a tables containing columns corresponding predictor variables) after having run modeling procedure using 8 models.

the first table (approx 250,000 rows) ran fine, , able save results .csv file. second 1 (approx 380,000 rows) resulted in above error message, , of files not written project folder.

i have since cut tables down maximum of 260,000 rows , no longer recieve error message. bit of pain doing in multiple runs, once had written script once, used find , replace in ms word change each run.


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