SPPREV: Overall Preavalences for Species Presence/Absence Data

In PresenceAbsence: Presence-Absence Model Evaluation

Overall Preavalences for Species Presence/Absence Data

Description

This data set is summary prevalence for Presence/Absence data for 13 species from 1930 forested locations. SPPREV is the prevalence data from the full dataset (training and test data). Note that SPDATA is the model predictions from the test data subset (20 percent of total plots) of this original dataset, and therefore the species in SPDATA have slightly different prevalence than the overall prevalence given in SPPREV.

Usage

data(SPDATA)

Format

A data frame with data for 13 species. Dataframe consists of species names, number of plots where the species was present, and the overall prevalence for each species:

SPECIES

a character vector of species codes

NUMPLOTS

a numeric vector of plot counts

PREV

a numeric vector of prevalence

Source

This dataset is from:

Moisen, G.G., Freeman, E.A., Blackard, J.A., Frescino, T.S., Zimmerman N.E., Edwards, T.C. Predicting tree species presence and basal area in Utah: A comparison of stochastic gradient boosting, generalized additive models, and tree-based methods. Ecological Modellng, 199 (2006) 176-187.

Examples

data(SPPREV)

PresenceAbsence documentation built on Jan. 7, 2023, 9:09 a.m.