Wildfires are very common, and even necessary in mediterranean forests.

The climate favors its occurance in summer, due to the combination of high temperatures and drough.

NDVI data: gimms package (R) <- AVHRR NOAA satelite <- raster data

Fire data: government <- vector data

Wildfire area over 60 ha situated in Catalonia, NE Spain.

Selection of a control area close to the burned area

QNDVI = mean(Wildfire Area) / mean(Control Area)

QNDVI<- function(fire, control, start, end, frequency){
  mean_fire=cellStats(fire, stat='mean')
  mean_control= cellStats(control, stat='mean')
  qndvi = mean_fire/ mean_control
  qndvi_ts <- ts(qndvi, start=start, end=end, frequency=frequency)
  return(qndvi_ts)
}