check.cols

ddf.obj

segment data as defined in <code><a rd-options="" href="/link/dsm?package=dsm&version=2.2.17" data-mini-rdoc="dsm::dsm">dsm</a></code>

segment.data

observation data as defined in <code><a rd-options="" href="/link/dsm?package=dsm&version=2.2.17" data-mini-rdoc="dsm::dsm">dsm</a></code>

observation.data

strip width if strip transects are being used

strip.width

segment.area

Internal function to check that supplied `data.frames` have the correct columns and checks that sample labels are all unique.

Density surface modelling of line transect data. A Generalized
Additive Model-based approach is used to calculate spatially-explicit estimates
of animal abundance from distance sampling (also presence/absence and strip
transect) data. Several utility functions are provided for model checking,
plotting and variance estimation.

Laura Marshall

Density Surface Modelling of Distance Sampling Data

check.cols function

segment data as defined in <code><a rd-options='' href='dsm'>dsm</a></code>

observation data as defined in <code><a rd-options='' href='dsm'>dsm</a></code>

check.cols: Check column names exist

Description

Usage

Arguments

Value