change                  Compute the change in the population over a
                        time interval.
checkFit                Check goodness of fit of a trend model.
goldcrest               Data for goldcrest from the Swedish Bird
                        Survey.
greenfinch              Data for greenfinch from the Swedish Bird
                        Survey.
hessBootstrap           Compute bootstrap confidence intervals based on
                        sampling from the variance-covariance matrix.
plot.trend              Plot an estimated trend.
poptrend                Analyze population trends from survey count
                        data.
print.trend             Print a trend object.
ptrend                  Fit a smooth or linear trend to count survey
                        data.
simTrend                Simulate population survey data.
summary.trend           Summary of trend estimates
trend                   Define a trend component.
