You're hiding some context in which this happens, I can't see whether it
is i that is -1 or something else. Please try to reproduce the error
message with a fixed file name, or even better in some way someone else
can reproduce it.
On 08/31/2010 08:55 PM, gianni lavaredo wrote:
> Dear reseearchers,
>
> I have a problem to save a SpatialPolygonsDataFrame in a shape file
> my SpatialPolygonsDataFrame = sub.area.SPDF
>
> thanks in Advance
> Gianni
>
>> writeOGR(sub.area.SPDF,".", paste("Sub_Area",rand.patch[[i]],sep=""),
> driver="ESRI Shapefile")
> Error in writeOGR(sub.area.SPDF, ".", paste("Sub_Area", rand.patch[[i]], :
>
> GDAL Error 1: Invalid index : -1
> In addition: Warning message:
> In writeOGR(sub.area.SPDF, ".", paste("Sub_Area", rand.patch[[i]], :
> Non-fatal GDAL Error 6: Normalized/laundered field name:
> 'rep.0..length.IDs..' to 'rep.0..len'
>
>
> # Attribute
>
>> class(sub.area.SPDF)
> [1] "SpatialPolygonsDataFrame"
> attr(,"package")
> [1] "sp"
>> str(sub.area.SPDF)
> Formal class 'SpatialPolygonsDataFrame' [package "sp"] with 5 slots
> ..@ data :'data.frame': 1 obs. of 1 variable:
> .. ..$ rep.0..length.IDs..: num 0
> ..@ polygons :List of 1
> .. ..$ :Formal class 'Polygons' [package "sp"] with 5 slots
> .. .. .. ..@ Polygons :List of 1
> .. .. .. .. ..$ :Formal class 'Polygon' [package "sp"] with 5 slots
> .. .. .. .. .. .. ..@ labpt : num [1:2] 1669500 7112500
> .. .. .. .. .. .. ..@ area : num 40000
> .. .. .. .. .. .. ..@ hole : logi FALSE
> .. .. .. .. .. .. ..@ ringDir: int 1
> .. .. .. .. .. .. ..@ coords : num [1:5, 1:2] 1669400 1669400 1669600
> 1669600 1669400 ...
> .. .. .. ..@ plotOrder: int 1
> .. .. .. ..@ labpt : num [1:2] 1669500 7112500
> .. .. .. ..@ ID : chr "1"
> .. .. .. ..@ area : num 40000
> ..@ plotOrder : int 1
> ..@ bbox : num [1:2, 1:2] 1669400 7112400 1669600 7112600
> .. ..- attr(*, "dimnames")=List of 2
> .. .. ..$ : chr [1:2] "x" "y"
> .. .. ..$ : chr [1:2] "min" "max"
> ..@ proj4string:Formal class 'CRS' [package "sp"] with 1 slots
> .. .. ..@ projargs: chr NA
>>
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>
>> sub.area.SPDF
> An object of class "SpatialPolygonsDataFrame"
> Slot "data":
> rep.0..length.IDs..
> 1 0
>
> Slot "polygons":
> [[1]]
> An object of class "Polygons"
> Slot "Polygons":
> [[1]]
> An object of class "Polygon"
> Slot "labpt":
> [1] 1669500 7112500
>
> Slot "area":
> [1] 40000
>
> Slot "hole":
> [1] FALSE
>
> Slot "ringDir":
> [1] 1
>
> Slot "coords":
> [,1] [,2]
> [1,] 1669400 7112400
> [2,] 1669400 7112600
> [3,] 1669600 7112600
> [4,] 1669600 7112400
> [5,] 1669400 7112400
>
>
>
> Slot "plotOrder":
> [1] 1
>
> Slot "labpt":
> [1] 1669500 7112500
>
> Slot "ID":
> [1] "1"
>
> Slot "area":
> [1] 40000
>
>
>
> Slot "plotOrder":
> [1] 1
>
> Slot "bbox":
> min max
> x 1669400 1669600
> y 7112400 7112600
>
> Slot "proj4string":
> CRS arguments: NA
>
> [[alternative HTML version deleted]]
>
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--
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics e.pebe...@wwu.de
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