[R-sig-Geo] Solid and dashed line.

[Enoch Gyamfi Ampadu]

Dear list,

Please I need some assistance. I have been asked to produce a 1:1 line
(dashed) and a line of best fit (solid) in a scatter plot. I have tried
geom_abline() but it gives only the solid line. I also tried lty("dashed")
to get the dashed line but it not working. I would be glad if I could get
some assistance on how to do it.

Best regards,

Enoch.

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