forestfire: Forest fire occurrence in central Chile

In datana: Datasets and Functions to Accompany Analisis De Datos Con R

Forest fire occurrence in central Chile

Description

Data of forest fire occurrence in central Chile having 7210 observations, with 890 cases of fire occurrence and 6320 cases of non-occurrence. The binary variable (Y) is the occurrence of forest fire, where Y=1 to denotes occurrence and Y=0, otherwise.

Usage

data(forestfire)

Format

The data frame contains four variables as follows:

fire

Occurrence of forest fire (1 yes, 0 no)

xcoord

Geographic coordinate x.utm

ycoord

Geographic coordinate y.utm

aspect

Exposure (degrees from north)

eleva

Elevation (m)

slope

Slope (degrees)

distr

Distance to dirt roads

distcity

Distance to cities

distriver

Distance to paved roads

covera

Land use classifications according to a polygon

coverb

Land use classifications according to a polygon

tempe

Minimum temperature of the coldest month

ppan

Annual precipitation

ndii

Normalized difference infrared index

nvdi

Normalized difference vegetation index

tempe2

Minimum temperature of the warmest month

ppan2

Precipitation of the driest month

frec.fire

Frequency of fires

perc.fire

Percentage of fire frequency

fireClass

Class for frecuency fire

asp.class

Class of variable exposure

eleva.class

Class of numerical variable elevation

slope.class

Class of numerical variable slope

ndii.class

Normalized difference infrared index class

nvdi.class

Normalized difference vegetation index class

Source

Data were provided by Dr Adison Altamirano at the Universidad de La Frontera (Temuco, Chile).

References

-Salas-Eljatib C, Fuentes-Ramírez A, Gregoire TG, Altamirano A, Yaitul V. 2018. A study on the effects of unbalanced data when fitting logistic regression models in ecology. Ecological Indicators 85:502-508. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1016/j.ecolind.2017.10.030")}

• Altamirano A, Salas C, Yaitul V, Smith-Ramirez C, Avila A. 2013. Infuencia de la heterogeneidad del paisaje en la ocurrencia de incendios forestales en Chile Central. Revista de Geografia del Norte Grande, 55:157-170.

Examples

data(forestfire)
head(forestfire)

datana documentation built on June 13, 2025, 1:11 a.m.