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Problems loading hydrosanity package
5 messages · BRWIN338 at aol.com, Felix Andrews, Roger Bivand
On Thu, 28 May 2009, BRWIN338 at aol.com wrote:
Good Morning: I need to construct a set of Thiessen Polygons centered around approximately 4500 longlat positions in the US. After searching the R site, I was going to attempt to use the arealsubPolygons function in the hydrosanity package. I am using a Windows system. When attempting to call the package I get the following error messages under both R2.8.1 and R2.9.0. ##################################################################
require(hydrosanity)
Loading required package: hydrosanity Loading required package: playwith Loading required package: lattice Loading required package: cairoDevice Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library 'C:/PROGRA~1/R/R-28~1.1/library/cairoDevice/libs/cairoDevice.dll': LoadLibrary failure: The specified module could not be found. Error: package 'cairoDevice' could not be loaded ################################################################### I have tried downloading the package and it's dependencies from several locations and get the same errors each time. Any suggestions with respect to this package or others that I might use to construct my polygons would be appreciated. I need a set of polygons that cover the entire US county polygon.
The package description does say that it is "under development and should not be considered stable", seems honest. Look at the code in its URL: http://code.google.com/p/hydrosanity/source/browse/trunk/R/spatial_functions.R find the function and its dependencies, load sp first, and probably a matrix of boundary coordinates for a representation that has a coercion method to gpc.poly, your point matrix, a vector of IDs, and source the function locally. That avoids resolving all the dependencies needed for the GUI in the package, and ought to work. Watch the min.area.pct= argument as small polygons may go away. Should work with some tweaking. Roger
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Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: Roger.Bivand at nhh.no
2009/5/29 Roger Bivand <Roger.Bivand at nhh.no>:
On Thu, 28 May 2009, BRWIN338 at aol.com wrote:
Good Morning: I need to construct a set of Thiessen Polygons centered around approximately 4500 longlat positions in the US. After searching the R site, I was going to attempt to use the arealsubPolygons function in the hydrosanity package. I am using a Windows system. When attempting to call the package I get the following error messages under both R2.8.1 and R2.9.0. ##################################################################
require(hydrosanity)
Loading required package: hydrosanity Loading required package: playwith Loading required package: lattice Loading required package: cairoDevice Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library 'C:/PROGRA~1/R/R-28~1.1/library/cairoDevice/libs/cairoDevice.dll': LoadLibrary failure: The specified module could not be found. Error: package 'cairoDevice' could not be loaded ################################################################### I have tried downloading the package and it's dependencies from several locations and get the same errors each time. Any suggestions with respect to this package or others that I might use to construct my polygons would be appreciated. I need a set of polygons that cover the entire US county polygon.
The package description does say that it is "under development and should not be considered stable", seems honest. Look at the code in its URL: http://code.google.com/p/hydrosanity/source/browse/trunk/R/spatial_functions.R find the function and its dependencies, load sp first, and probably a matrix of boundary coordinates for a representation that has a coercion method to gpc.poly, your point matrix, a vector of IDs, and source the function locally. That avoids resolving all the dependencies needed for the GUI in the package, and ought to work. Watch the min.area.pct= argument as small polygons may go away. Should work with some tweaking.
I tried library(sp) library(tripack) library(gpclib) foo <- arealSubPolygons(state.center, IDs = state.name) class(foo) [1] "SpatialPolygons" But I can't seem to plot the result... spplot(foo) Error in function (classes, fdef, mtable) : unable to find an inherited method for function "spplot", for signature "SpatialPolygons" Note also that you can construct Thiessen / Voronoi Polygons for plotting with the tileplot function in latticeExtra: library(latticeExtra) tileplot(x ~ x * y, state.center, border = "black", points=FALSE) See the code for panel.voronoi for how it is done (it has two implementations, based on either tripack or deldir). Hope that helps -Felix -- Felix Andrews / ??? Post-Doctoral Fellow Integrated Catchment Assessment and Management (iCAM) Centre Fenner School of Environment and Society [Bldg 48a] The Australian National University Canberra ACT 0200 Australia M: +61 410 400 963 T: + 61 2 6125 1670 E: felix.andrews at anu.edu.au CRICOS Provider No. 00120C
On Fri, 29 May 2009, Felix Andrews wrote:
2009/5/29 Roger Bivand <Roger.Bivand at nhh.no>:
On Thu, 28 May 2009, BRWIN338 at aol.com wrote:
Good Morning: I need to construct a set of Thiessen Polygons centered around approximately 4500 longlat positions in the US. After searching the R site, I was going to attempt to use the arealsubPolygons function in the hydrosanity package. I am using a Windows system. When attempting to call the package I get the following error messages under both R2.8.1 and R2.9.0. ##################################################################
require(hydrosanity)
Loading required package: hydrosanity Loading required package: playwith Loading required package: lattice Loading required package: cairoDevice Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library 'C:/PROGRA~1/R/R-28~1.1/library/cairoDevice/libs/cairoDevice.dll': LoadLibrary failure: The specified module could not be found. Error: package 'cairoDevice' could not be loaded ################################################################### I have tried downloading the package and it's dependencies from several locations and get the same errors each time. Any suggestions with respect to this package or others that I might use to construct my polygons would be appreciated. I need a set of polygons that cover the entire US county polygon.
The package description does say that it is "under development and should not be considered stable", seems honest. Look at the code in its URL: http://code.google.com/p/hydrosanity/source/browse/trunk/R/spatial_functions.R find the function and its dependencies, load sp first, and probably a matrix of boundary coordinates for a representation that has a coercion method to gpc.poly, your point matrix, a vector of IDs, and source the function locally. That avoids resolving all the dependencies needed for the GUI in the package, and ought to work. Watch the min.area.pct= argument as small polygons may go away. Should work with some tweaking.
I tried library(sp) library(tripack) library(gpclib) foo <- arealSubPolygons(state.center, IDs = state.name) class(foo) [1] "SpatialPolygons" But I can't seem to plot the result... spplot(foo) Error in function (classes, fdef, mtable) : unable to find an inherited method for function "spplot", for signature "SpatialPolygons"
Well, there isn't a method, because they only exist for Spatial*DataFrame objects for obvious reasons. Just use base graphics plot() methods for the Spatial* classes. I guess that the boundary argument is usually a matrix - does it have to be a single ring, or can it be several rings? By the way, was there an explanation for the failed cairoDevice dependency? Keeping control of dependencies like those in this package is seriously challenging. Roger
Note also that you can construct Thiessen / Voronoi Polygons for plotting with the tileplot function in latticeExtra: library(latticeExtra) tileplot(x ~ x * y, state.center, border = "black", points=FALSE) See the code for panel.voronoi for how it is done (it has two implementations, based on either tripack or deldir). Hope that helps -Felix
Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: Roger.Bivand at nhh.no
1 day later
2009/5/29 Roger Bivand <Roger.Bivand at nhh.no>:
On Fri, 29 May 2009, Felix Andrews wrote:
2009/5/29 Roger Bivand <Roger.Bivand at nhh.no>:
On Thu, 28 May 2009, BRWIN338 at aol.com wrote:
Good Morning: I need to construct a set of Thiessen Polygons centered around approximately 4500 longlat positions in the US. After searching the R site, I was going to attempt to use the arealsubPolygons function in the hydrosanity package. I am using a Windows system. When attempting to call the package I get the following error messages under both R2.8.1 and R2.9.0. ##################################################################
require(hydrosanity)
Loading required package: hydrosanity Loading required package: playwith Loading required package: lattice Loading required package: cairoDevice Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library 'C:/PROGRA~1/R/R-28~1.1/library/cairoDevice/libs/cairoDevice.dll': LoadLibrary failure: The specified module could not be found. Error: package 'cairoDevice' could not be loaded ################################################################### I have tried downloading the package and it's dependencies from several locations and get the same errors each time. Any suggestions with respect to this package or others that I might use to construct my polygons would be appreciated. I need a set of polygons that cover the entire US county polygon.
The package description does say that it is "under development and should not be considered stable", seems honest. Look at the code in its URL: http://code.google.com/p/hydrosanity/source/browse/trunk/R/spatial_functions.R find the function and its dependencies, load sp first, and probably a matrix of boundary coordinates for a representation that has a coercion method to gpc.poly, your point matrix, a vector of IDs, and source the function locally. That avoids resolving all the dependencies needed for the GUI in the package, and ought to work. Watch the min.area.pct= argument as small polygons may go away. Should work with some tweaking.
I tried library(sp) library(tripack) library(gpclib)
Sorry, I forgot the crucial step of sourcing the function -- as an
alternative to installing the whole package, with its dependencies on
RGtk2 etc --:
source("http://hydrosanity.googlecode.com/svn/trunk/R/spatial_functions.R")
foo <- arealSubPolygons(state.center, IDs = state.name) class(foo) [1] "SpatialPolygons"
ok, try
with(state.center, {
plot(foo, xlim=range(x), ylim = range(y))
text(x, y, state.abb) })
But I can't seem to plot the result... spplot(foo) Error in function (classes, fdef, mtable) : unable to find an inherited method for function "spplot", for signature "SpatialPolygons"
Well, there isn't a method, because they only exist for Spatial*DataFrame objects for obvious reasons. Just use base graphics plot() methods for the Spatial* classes.
Those reasons are not obvious to me: I prefer to use Lattice graphics rather than base graphics, even if I do not need to use conditioning. The Lattice system is object-based and very flexible; e.g. one can concatenate or overlay Lattice plot panels using the tools in the latticeExtra package.
I guess that the boundary argument is usually a matrix - does it have to be a single ring, or can it be several rings?
Yes, you can use a matrix like boundary = coordinates(myPolygon) (from an sp Polygon class) But in theory you can supply anything that can be converted with as(boundary, "gpc.poly") It should be possible to specify multiple polygons that way; check the gpclib package.
By the way, was there an explanation for the failed cairoDevice dependency? Keeping control of dependencies like those in this package is seriously challenging.
Yes, the error message indicated that the cairoDevice DLL was missing. The most likely cause of that is that the GTK+ libraries have not been installed. Installation instructions are available at http://hydrosanity.googlecode.com/ The comment about the package being unstable/incomplete is certainly true, and it has not been actively maintained for the last year or so.
Roger
Note also that you can construct Thiessen / Voronoi Polygons for plotting with the tileplot function in latticeExtra: library(latticeExtra) tileplot(x ~ x * y, state.center, border = "black", points=FALSE) See the code for panel.voronoi for how it is done (it has two implementations, based on either tripack or deldir). Hope that helps -Felix
-- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: Roger.Bivand at nhh.no
-- Felix Andrews / ??? Post-Doctoral Fellow Integrated Catchment Assessment and Management (iCAM) Centre Fenner School of Environment and Society [Bldg 48a] The Australian National University Canberra ACT 0200 Australia M: +61 410 400 963 T: + 61 2 6125 1670 E: felix.andrews at anu.edu.au CRICOS Provider No. 00120C