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I'm new to R and I have been experimenting with different data visualization techniques. I was trying out scatter-plot matrices and this is my code 

scatterplotMatrix(~Salary+Percent_MBA+Percentile_ET, 
              data = placedET,
              main = "Scatter Plot Matrix",
              spread = FALSE,
              )

My question is can I access attributes of the red line (non-parametric regression), can I alter its type? I found that the color can be altered through col but can't I change the line type .I have managed to change the green lines attributes by lty but I can't access the other one. I read the help section for scatter-plot matrices and stumbled upon smoother.args .Is this related to it somehow? I've posted an image link to show my current scatter-plot.

(P.S : It's my first question here so I'm sorry if I have made any mistakes. Please point them out.)

Kazza
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  • I haven't used that function myself, but looking at the documentation https://www.rdocumentation.org/packages/car/versions/2.1-5/topics/scatterplotMatrix I don't see any arguments for altering the attributes of the non-parametric regression lines. – Florian Jul 15 '17 at 14:04
  • The attributes can be changed, if you're interested check the answer below. – Kazza Jul 18 '17 at 09:12

1 Answers1

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OK, finally I got the answer. My initial suspicion was right. To get the lines to be dotted include smoother.args=list(lty=2) in the code.

Kazza
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