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Plot effective sampling area (Borchers and Efford 2008) as a function of increasing buffer width.
● Data Source:
CranContrib
● Keywords: hplot
● Alias: esa.plot
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0 images
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Computes the expected number of individuals detected across a detector layout or at each cluster of detectors.
● Data Source:
CranContrib
● Keywords: models
● Alias: expected.n
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0 images
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Tools to construct spatial covariates for existing mask or traps objects from a spatial data source. Possible sources include GIS data such as ESRI polygon shapefiles input using maptools.
● Data Source:
CranContrib
● Keywords: manip
● Alias: addCovariates
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0 images
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secr-package
(Package: secr) :
Spatially Explicit Capture--Recapture Models
Functions to estimate the density and size of a spatially distributed animal population sampled with an array of passive detectors, such as traps, or by searching polygons or transects.
● Data Source:
CranContrib
● Keywords: package
● Alias: secr, secr-package
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0 images
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fx.total
(Package: secr) :
Activity Centres of Detected and
The summed probability densities of both observed and unobserved individuals are computed for a fitted model and dataset.
● Data Source:
CranContrib
● Keywords: model
● Alias: fx.total
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0 images
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spacing
(Package: secr) :
Detector or Mask Spacing
Extract or replace the spacing attribute of a detector array or mask.
● Data Source:
CranContrib
● Keywords: models
● Alias: spacing, spacing.mask, spacing.traps, spacing<-
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Rows are sorted by fields in covariates or by a provided sort key of length equal to the number of rows.
● Data Source:
CranContrib
● Keywords: manip
● Alias: sort.capthist, sort.mask
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0 images
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plot.mask
(Package: secr) :
Plot Habitat Mask, Density or Resource Surface
Plot a habitat mask either as points or as an image plot. Colours maybe used to show the value of one mask covariate.
● Data Source:
CranContrib
● Keywords: hplot
● Alias: plot.Dsurface, plot.Rsurface, plot.mask, spotHeight
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mask.check evaluates the effect of varying buffer width and mask spacing on either the likelihood or density estimates from secr.fit()
● Data Source:
CranContrib
● Keywords: manip
● Alias: mask.check
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0 images
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This function displays variation in effort (usage) over detectors as a bubble plot (circles with radius scaled so that area is proportional to effort).
● Data Source:
CranContrib
● Keywords: hplot
● Alias: usagePlot
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0 images
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providing 
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