Displaying 2 results from an estimated 2 matches for "lai_simulation".
2017 Jul 06
1
Convert date to continuous variable in R
Thanks it worked for me. I wanted to plot days since planting on
x-axis 1 and years on x-axis 3.
LAI_simulation$Date <- as.Date( LAI_simulation$Date, '%Y/%m/%d')
LAI_simulation$Date <- as.integer(LAI_simulation$Date - as.Date("2009-10-07"))
plot(LAI~Date,data=LAI_simulation,xlab="Days since Oct, 7,
2009",cex=0.3,cex.lab=1.2,xaxt="n",xaxs="i",yaxs="i&...
2017 Jul 05
1
Convert date to continuous variable in R
...axes (1 and 3).
Ex;
Date LAI
10/7/2009 0
10/8/2009 0.004173
10/9/2009 0.009997
10/10/2009 0.009998
10/11/2009 0.009999
10/12/2009 0.009999
10/13/2009 0.009999
10/14/2009 0.009999
10/15/2009 0.009998
10/16/2009 0.009998
10/17/2009 0.009998
10/18/2009 0.009998
10/19/2009 0.009998
10/20/2009 0.009998
LAI_simulation$Date <- as.Date( LAI_simulation$Date, '%Y/%m/%d')
plot(LAI~Date, data=LAI_simulation)
LAI_simulation$Date<- as.numeric(LAI_simulation$Date,origin="2009-10-07")
#R does not see the origin
axis.Date(side=3,at=LAI_simulation$Date)
Ahmed Attia, Ph.D.
Agronomist & Soil Sc...