get.vpd.RdCalculate VPD
get.vpd(rh, temp)
| rh | relative humidity, in percent  | 
    
|---|---|
| temp | temperature, degrees celsius  | 
    
vpd: vapor pressure deficit, in mb
Calculate vapor pressure deficit from relative humidity and temperature.
# NOT RUN { temp <- -30:30 plot(temp, get.vpd(0, temp)) # }