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I have ggplot scatters of points and I'm trying to visualize the different decision boundaries i get with glm. I can grab the coefficients from glm and I end up with something like f(x1,x2) = 0 which could have power interactions so I can't just try abline. What's the simplest way to visualize it on the scatter? I was thinking if there's a "solver" maybe which will return a frame of points on a grid that I can then geom_line maybe?

Palace Chan
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    If you are using generalized linear models why would you not use `predict` ? – mfidino Apr 28 '16 at 13:44
  • What I'm trying to plot alongside the 2D point scatter is the decision boundary of the logit. – Palace Chan Apr 28 '16 at 13:50
  • This is a bit abstract to answer generally, it would help if you made it more specific by adding a [reproducible example](http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example). That way solutions can be tested and verified. – MrFlick Apr 28 '16 at 14:26

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