R help - Feb 2012 - Producing KML files

Hi,

I am very new to R and I am trying to write KML files. I am running R-2.13.1 and
I have the following packages:

-          AKIMA

-          RGDAL

-          RSAGA

-          SP


I was trying to run the simple example that I found at the following web page:
http://spatial-analyst.net/wiki/index.php?title=Export_maps_to_GE

The lines that I can run are:

data(meuse.grid)
coordinates(meuse.grid) <- ~x+y
gridded(meuse.grid) <- TRUE
proj4string(meuse.grid) = CRS("+init=epsg:28992")
# raster to polygon conversion;
writeGDAL(meuse.grid["soil"], "meuse_soil.sdat",
"SAGA", mvFlag=-99999)
rsaga.geoprocessor(lib="shapes_grid", module=6,
                       param=list(GRID="meuse_soil.sgrd",
POLYGONS="meuse_soil.shp", CLASS_ALL=1))

and it crashes there with the following error message:

Error in setwd(env$workspace) : character argument expected
In addition: Warning message:
In rsaga.env() :
  SAGA command line program 'saga_cmd.exe' not found in any of the paths
C:/Program Files/R/R-2.13.1/library/RSAGA/saga_vc
C:/Program Files/R/R-2.13.1/library/RSAGA/SAGA-GIS
...

Can someone please let me know what I should do to fix that error?

Thanks,
Mel


	[[alternative HTML version deleted]]

Hi Melicie,

I'm not a Windows user or a user of SAGA but the warning message suggests
part of the problem may be that R can't find your SAGA installation. Is it
in your Windows PATH?

You may be able to get more specialized help on the R-SIG-geo list as well. 

Michael

On Feb 24, 2012, at 12:06 PM, "Desflots, Melicie" <mdesflots at
AIR-WORLDWIDE.COM> wrote:
> Hi,
> 
> I am very new to R and I am trying to write KML files. I am running
R-2.13.1 and I have the following packages:
> 
> -          AKIMA
> 
> -          RGDAL
> 
> -          RSAGA
> 
> -          SP
> 
> 
> I was trying to run the simple example that I found at the following web
page:
> http://spatial-analyst.net/wiki/index.php?title=Export_maps_to_GE
> 
> The lines that I can run are:
> 
> data(meuse.grid)
> coordinates(meuse.grid) <- ~x+y
> gridded(meuse.grid) <- TRUE
> proj4string(meuse.grid) = CRS("+init=epsg:28992")
> # raster to polygon conversion;
> writeGDAL(meuse.grid["soil"], "meuse_soil.sdat",
"SAGA", mvFlag=-99999)
> rsaga.geoprocessor(lib="shapes_grid", module=6,
>                       param=list(GRID="meuse_soil.sgrd",
POLYGONS="meuse_soil.shp", CLASS_ALL=1))
> 
> and it crashes there with the following error message:
> 
> Error in setwd(env$workspace) : character argument expected
> In addition: Warning message:
> In rsaga.env() :
>  SAGA command line program 'saga_cmd.exe' not found in any of the
paths
> C:/Program Files/R/R-2.13.1/library/RSAGA/saga_vc
> C:/Program Files/R/R-2.13.1/library/RSAGA/SAGA-GIS
> ...
> 
> Can someone please let me know what I should do to fix that error?
> 
> Thanks,
> Mel
> 
> 
>    [[alternative HTML version deleted]]
> 
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