Changes between Version 28 and Version 29 of Cookbook gdal

Timestamp:

Jan 29, 2010 12:53:32 PM (15 years ago)

Author:

cedric

Comment:

--

Cookbook gdal

@@ -81 +81 @@
 {{{
 require(rgdal)
-readOGR(dsn=PG:"host=locahost user=postgres dbname=CCM password=postgres port=5433",layer="riversegments")
+readOGR(dsn="PG:host=locahost user=postgres dbname=CCM password=postgres port=5433",layer="riversegments")
 }}}
-However the R invariably returns an absolutely not helpful code
+However the R invariably returns an absolutely not helpful code, and the same with R2.10 or R2.10.1
 {{{
 > require(rgdal)
@@ -113 +113 @@
                datasource_name [layer [layer ...]]
 }}}
-There does not seem to be any problem and also nothing is returned ... oh fuck
+There does not seem to be any problem and also nothing is returned ... 
+The next example for writing
+{{{
+library(rgdal)
+writeOGR(meuse[1:10,], "PG:dbname=postgis", "meuse3", "PostgreSQL")
+}}}
+returns
+{{{
+Erreur dans writeOGR(meuse[1:10, ], "PG:dbname=postgis", "meuse3", "PostgreSQL") : 
+  No such driver: PostgreSQL
+}}}
+All examples which do not imply postgres work
+{{{
+logo <- system.file("pictures/logo.jpg", package="rgdal")[1]
+x <- new("GDALReadOnlyDataset", logo)
+x
+getDriverLongName(getDriver(x))
+displayDataset(x)
+ogrDrivers()
+dsn <- system.file("vectors", package = "rgdal")[1]
+ogrInfo(dsn=dsn, layer="cities")
+cities <- readOGR(dsn=dsn, layer="cities")
+summary(cities)
+ogrInfo(dsn=dsn, layer="kiritimati_primary_roads")
+kiritimati_primary_roads <- readOGR(dsn=dsn, layer="kiritimati_primary_roads")
+summary(kiritimati_primary_roads)
+ogrInfo(dsn=dsn, layer="scot_BNG")
+scot_BNG <- readOGR(dsn=dsn, layer="scot_BNG")
+summary(scot_BNG)
+if ("GML" %in% ogrDrivers()$name) {
+        dsn <- system.file("vectors/airports.gml", package = "rgdal")[1]
+        airports <- try(readOGR(dsn=dsn, layer="airports"))
+        if (class(airports) != "try-error") summary(airports)
+}
+dsn <- system.file("vectors/ps_cant_31.MIF", package = "rgdal")[1]
+ogrInfo(dsn=dsn, layer="ps_cant_31")
+ps_cant_31 <- readOGR(dsn=dsn, layer="ps_cant_31")
+summary(ps_cant_31)
+dsn <- system.file("vectors/Up.tab", package = "rgdal")[1]
+ogrInfo(dsn=dsn, layer="Up")
+Up <- readOGR(dsn=dsn, layer="Up")
+summary(Up)
+dsn <- system.file("vectors/test_trk2.gpx", package = "rgdal")[1]
+test_trk2 <- try(readOGR(dsn=dsn, layer="tracks"))
+if (class(test_trk2) != "try-error") summary(test_trk2)
+test_trk2pts <- try(readOGR(dsn=dsn, layer="track_points"))
+if (class(test_trk2pts) != "try-error") summary(test_trk2pts)
+dsn <- system.file("vectors", package = "rgdal")[1]
+ogrInfo(dsn=dsn, layer="trin_inca_pl03")
+birds <- readOGR(dsn=dsn, layer="trin_inca_pl03")
+summary(birds)
+}}}
+mmmh ... and PostgreSQL in not listed in ogrDrivers()
+{{{
+ogrDrivers()
+}}}