R Ggplot Map Add Legend. The data is reshaped with tidyr::pivot_longer. This type of problem is usually solved by reshaping the data set from wide to long format. Depending on which argument you use to pass the data and your specific case the output will be different. So if you use color, shape or alpha, a legend will be available. When adding a legend to a plot, there are two main ways to modify the legend position with the R legend function. Adding scale_fill_identity ("Title legend", labels = c ("Below mean", "At mean", "Above mean"), breaks = plotclr, guide = "legend") does solve my question. To have the colors of your choice, use a color scale. Sorry guys, I was using the wrong function.
R Ggplot Map Add Legend. Then just map the long variable SIR to the color aesthetic and the points and lines are automatically plotted with different colors. Change the label for the aesthetic the legend is drawn for in labs (). To have the colors of your choice, use a color scale. Adding scale_fill_identity ("Title legend", labels = c ("Below mean", "At mean", "Above mean"), breaks = plotclr, guide = "legend") does solve my question. The keys can be determined by scale breaks. R Ggplot Map Add Legend.
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So if you use color, shape or alpha, a legend will be available.
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R Ggplot Map Add Legend. Use guides (fill=FALSE), replacing fill with the desired aesthetic. Change the label for the aesthetic the legend is drawn for in labs (). I have a ggplot figure that uses both geom_ribbon and geom_line and want both to show up in the legend. So if you use color, shape or alpha, a legend will be available. My figure has the legend at the bottom, but it's spilling off the sides of the figure.
R Ggplot Map Add Legend.