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RPyGeo (version 0.9-3)

ArcGIS Solar Radiation: Wrappers for solar radiation and viewshed geoprocessing tools

Description

Wrappers for ArcGIS geoprocessing tools for calculating solar radiation and viewsheds (Spatial Analyst extension).

Usage

rpygeo.AreaSolarRadiation.sa(in.surface.raster,  out.global.radiation.raster, latitude = 45, sky.size = 200,  time.configuration, day.interval = 14, hour.interval = 0.5,  each.interval = c("NOINTERVAL", "INTERVAL"),  z.factor = NULL, slope.aspect.input.type = c("FROM_DEM", "FLAT_SURFACE"),  calculation.directions = 32, zenith.divisions = 8,  azimuth.divisions = 8,  diffuse.model.type = c("UNIFORM_SKY", "STANDARD_OVERCAST_SKY"),  diffuse.proportion = 0.3, transmittivity = 0.5,  out.direct.radiation.raster = NULL, out.diffuse.radiation.raster = NULL,  out.direct.duration.raster = NULL, ...)
rpygeo.Viewshed.sa(in.raster, in.observer.features, out.raster, z.factor = 1,  curvature.correction = c("FLAT_EARTH", "CURVED_EARTH"), refractivity.coefficient = 0.13, x.field = "x", y.field = "y", tmpdir = tempdir(), ...)

Arguments

in.surface.raster, in.raster, out.global.radiation.raster, out.raster, out.direct.radiation.raster, out.diffuse.radiation.raster, out.direct.duration.raster
Names of ArcGIS raster datasets, or feature classes in a geodatabase (relative to the current workspace defined in a rpygeo.env environment).
latitude, sky.size, time.configuration, day.interval, hour.interval, each.interval, z.factor, slope.aspect.input.type, calculation.directions, zenith.divisions, azimuth.divisions, diffuse.model.type, diffuse.proportion, transmittivity
Arguments to be passed to the Python geoprocessing tool. See ArcGIS help files (link below) for information on the usage of scripting commands and their arguments.
in.observer.features
Name of shapefile (including file extension ".shp") with observer point or polygon features, or data.frame with observer point features. If this is a data.frame, it will be written to a temporary shapefile in folder tmpdir, and x and y coordinates will be taken from the attributes identified by x.field and y.field
x.field, y.field
(optional) names of x and y coordinates if in.observer.features is a data.frame
tmpdir
(optional) name of folder for temporary files (when in.observer.features is a data.frame
...
Additional arguments to be passed to rpygeo.geoprocessor.

Value

The functions return NULL if no error occurred, otherwise a character vector containing the error message.

Details

These functions simply interface the behaviour of the ArcGIS/Python geoprocessing functions with the equivalent names. See rpygeo.geoprocessor for details on what happens behind the scenes.

ArcGIS 9.2 online help for the georpocessing tools can be accessed through the following URLs:

See Also

rpygeo.geoprocessor, rpygeo.build.env