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pbreheny / visreg

Visualization of regression functions
http://pbreheny.github.io/visreg/
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Change the transparency of the confidence band #43

Closed ManuelSpinola closed 6 years ago

ManuelSpinola commented 6 years ago

Is it possible to change the transparency of the confidence band in visreg?

pbreheny commented 6 years ago

Well, the way it's set up in base R is that transparency is a property of the color, so by changing the color, you can change the transparency:

fit <- lm(Ozone ~ Solar.R + Wind*Temp, data=airquality)
visreg(fit, "Wind", fill.par=list(col=grey(0.5, 0.05)))  # Really transparent
visreg(fit, "Wind", fill.par=list(col=grey(0.5, 0.95)))  # Nearly opaque

Does that help?

visreg doesn't currently support this, but I suppose it might be possible to allow something like fill.par=list(alpha=0.3), so that you could change the transparency directly and leave the shade/tint unaffected.

ManuelSpinola commented 6 years ago

Thank you very much Patrick. I have been using and teaching visreg. Is a great package and very necessary to plot the results from models.

Manuel

2018-03-12 13:53 GMT-06:00 Patrick Breheny notifications@github.com:

Well, the way it's set up in base R is that transparency is a property of the color, so by changing the color, you can change the transparency:

fit <- lm(Ozone ~ Solar.R + Wind*Temp, data=airquality) visreg(fit, "Wind", fill.par=list(col=grey(0.5, 0.05))) # Really transparent visreg(fit, "Wind", fill.par=list(col=grey(0.5, 0.95))) # Nearly opaque

Does that help?

visreg doesn't currently support this, but I suppose it might be possible to allow something like fill.par=list(alpha=0.3), so that you could change the transparency directly and leave the shade/tint unaffected.

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pbreheny commented 6 years ago

Thanks, Manuel!