[R] linear line in x, y plot

[Jim Lemon]

On 10/29/2013 02:30 AM, Ahmed Attia wrote:
> Hi
>
> I have a question about drawing a linear line in x, y plot. I usually
> use the following code, but for this time the x values are to small
> (-0.08 to -0.02)
>
> I wrote the following code, but r does not draw the line. However, it
> does not give an error when it takes the code.
>
>
> reg1<- lm(CWSI~NWI, data=Ahmed)
>
> NWI<- seq(-0.08, -0.02, len = -0.02)
> lines(NWI, predict(reg1, list(NWI =
> NWI)),xlim=c(-0.08,-0.02),ylim=c(0,1),pch=1,col=1,lwd=2, lty=1)
>
> When I wrote the following code
>
> abline(reg1,pch=2,col=2,lwd=2, lty=2,xlim=c(-0.06,-0.02),ylim=c(0.3,0.8))
>
> the line shows up, but I can not control the xlim or ylim. It bascally
> goes across the figure
>
Hi Ahmed,
Have a look at ablineclip in the plotrix package.

Jim