a problem with readOGR

Hello,

I was working on a script (which was working perfectly). For some reason
I updated my packages and readOGR() is not working anymore. I was able
to read those data before. I decided to reinstall everything, and it is
still not working. Does anyone has the same problem. Here is the code,
the warning and session info :

CODE:
setwd("D:/mydirectory");
carte = readOGR("COMMUNE.shp",layer="COMMUNE");

COMMUNE.shp .dbf. and all other required files are in D:/mydirectory. I
was able to build the map before the problem arised.

WARNING:
[8] ERREUR:
impossible d'ouvrir la connexion

That is : "Impossible to open connection".

SESSION INFO:

  > sessionInfo();

R version 2.15.2 (2012-10-26)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=French_France.1252 LC_CTYPE=French_France.1252
LC_MONETARY=French_France.1252 LC_NUMERIC=C
LC_TIME=French_France.1252

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

other attached packages:
   [1] mgcv_1.7-22     sfsmisc_1.0-23  spdep_0.5-56 coda_0.16-1
deldir_0.0-21   maptools_0.8-22 foreign_0.8-52 nlme_3.1-107
Matrix_1.0-9    boot_1.3-7
[11] rgdal_0.8-3     lattice_0.20-13 geoR_1.7-4 sp_1.0-5
Rcmdr_1.9-3     car_2.0-15      nnet_7.3-5 MASS_7.3-22

loaded via a namespace (and not attached):
[1] LearnBayes_2.12     RandomFields_2.0.59 splancs_2.01-32 tcltk_2.15.2


Thank you very much for your help. Best regards. Julien

Hello,

To me, the following works:

setwd("D:/mydirectory/")
carte = readOGR(getwd(),layer="COMMUNE")

HTH,
Pascal

Le 18/01/2013 08:35, Julien Salani? a ?crit :

Hello,

I was working on a script (which was working perfectly). For some reason
I updated my packages and readOGR() is not working anymore. I was able
to read those data before. I decided to reinstall everything, and it is
still not working. Does anyone has the same problem. Here is the code,
the warning and session info :

CODE:
setwd("D:/mydirectory");
carte = readOGR("COMMUNE.shp",layer="COMMUNE");

COMMUNE.shp .dbf. and all other required files are in D:/mydirectory. I
was able to build the map before the problem arised.

WARNING:
[8] ERREUR:
impossible d'ouvrir la connexion

That is : "Impossible to open connection".

SESSION INFO:

  > sessionInfo();

R version 2.15.2 (2012-10-26)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=French_France.1252 LC_CTYPE=French_France.1252
LC_MONETARY=French_France.1252 LC_NUMERIC=C
LC_TIME=French_France.1252

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

other attached packages:
   [1] mgcv_1.7-22     sfsmisc_1.0-23  spdep_0.5-56 coda_0.16-1
deldir_0.0-21   maptools_0.8-22 foreign_0.8-52 nlme_3.1-107
Matrix_1.0-9    boot_1.3-7
[11] rgdal_0.8-3     lattice_0.20-13 geoR_1.7-4 sp_1.0-5
Rcmdr_1.9-3     car_2.0-15      nnet_7.3-5 MASS_7.3-22

loaded via a namespace (and not attached):
[1] LearnBayes_2.12     RandomFields_2.0.59 splancs_2.01-32 tcltk_2.15.2


Thank you very much for your help. Best regards. Julien

On Fri, 18 Jan 2013, Pascal Oettli wrote:

Hello,

To me, the following works:

setwd("D:/mydirectory/")
carte = readOGR(getwd(),layer="COMMUNE")

Yes, thanks for the reports. In the changes made for 0.8-*, an attempt is 
made for the ESRI Shapefile driver to read the LDID byte in the *.dbf file to 
indicate which character set is used for encoding. The current code is:

con <- file(paste(dsn, .Platform$file.sep, layer, ".dbf", sep=""), "rb")

which will fail if dsn is the shapefile itself, but pass if dsn is the data 
source name (the directory in which the shapefiles are placed). I'll try to 
patch this so that both ways of reading shapefiles work again, and report 
back when the fix is committed. The failure was in ogrInfo() inside readOGR() 
- running traceback() after the error would show this.

Best wishes,

Roger

HTH,
Pascal

Le 18/01/2013 08:35, Julien Salani? a ?crit :

Hello,

I was working on a script (which was working perfectly). For some reason
I updated my packages and readOGR() is not working anymore. I was able
to read those data before. I decided to reinstall everything, and it is
still not working. Does anyone has the same problem. Here is the code,
the warning and session info :

CODE:
setwd("D:/mydirectory");
carte = readOGR("COMMUNE.shp",layer="COMMUNE");

COMMUNE.shp .dbf. and all other required files are in D:/mydirectory. I
was able to build the map before the problem arised.

WARNING:
[8] ERREUR:
impossible d'ouvrir la connexion

That is : "Impossible to open connection".

SESSION INFO:

  > sessionInfo();

R version 2.15.2 (2012-10-26)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=French_France.1252 LC_CTYPE=French_France.1252
LC_MONETARY=French_France.1252 LC_NUMERIC=C
LC_TIME=French_France.1252

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

other attached packages:
   [1] mgcv_1.7-22     sfsmisc_1.0-23  spdep_0.5-56 coda_0.16-1
deldir_0.0-21   maptools_0.8-22 foreign_0.8-52 nlme_3.1-107
Matrix_1.0-9    boot_1.3-7
[11] rgdal_0.8-3     lattice_0.20-13 geoR_1.7-4 sp_1.0-5
Rcmdr_1.9-3     car_2.0-15      nnet_7.3-5 MASS_7.3-22

loaded via a namespace (and not attached):
[1] LearnBayes_2.12     RandomFields_2.0.59 splancs_2.01-32 tcltk_2.15.2


Thank you very much for your help. Best regards. Julien