auremask | R Documentation |
An AURELHY window of analysis ('auremask' object) specifies the regions relative to the point that define the various variables describing the landscape.
auremask(type = "radial", dist = c(1, 6, 11, 16, 21, 26),
angles = 0:7 * pi/4 + 0.01, n = 11, keep.origin = FALSE)
## S3 method for class 'auremask'
print(x, geomat, ...)
## S3 method for class 'auremask'
plot(x, y, ...)
type |
the type of window, either |
dist |
A vector of distances (in km) to consider in the window for the
|
angles |
A vector of angles in radians to use to construct a
|
n |
The number of grid points in latitude and longitude to use for a
|
keep.origin |
Is the origin where the window is centered considered as one point of the grid, or not (by default, not, as in the original implementation of the AURELHY method) |
x |
An 'auremask' object |
geomat |
A reference grid, as a 'geomat' object against which the window of analysis is tested (print or plot the number of points that are located in each sector of the window) |
y |
Same as |
... |
further arguments passed to the function |
auremask()
creates a new window of analysis. The object has print()
and
plot()
methods.
An 'auremask' object with all information required to mask a 'geotm' object (terrain model) for creating landscape variables required by the AURELHY method.
Philippe Grosjean <phgrosjean@sciviews.org>
polar.coords
, geomat
# Default window of analysis
am <- auremask()
am
# Get an example terrain model and apply the window on it
data(morocco)
plot(am, morocco)
# Further statistics are displayed with print() if a grid is provided too
print(am, morocco)
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