shapeHulls | R Documentation |
This function is used to update plot.procD.lm
and plot.gm.prcomp
ordination plot
objects with convex hulls for different groups. If no groups are defined (groups is NULL) just a single
convex hull will be returned. Groups do not need to be a factor in the original procD.lm
fit.
shapeHulls( x, groups = NULL, group.cols = NULL, group.lwd = NULL, group.lty = NULL )
x |
A |
groups |
An optional vector or factor to define groups for hull. If NULL, only one hull will be generated for all points. |
group.cols |
An optional vector to define hull colors, arranged in the same order as factor levels. If NULL and if multiple groups exist, the general R color sequence (black, red, green, blue, etc.) will be used. |
group.lwd |
An optional vector equal in length to the number of group levels, and arranged in the order of group levels, to modify hull line width. |
group.lty |
An optional vector equal in length to the number of group levels, and arranged in the order of group levels, to modify hull line type. |
This function is a wrapper for the points
function. It is intentionally limited, so
as to not interfere with other plot parameter adjustments.
Michael Collyer
procD.lm
# Via procD.lm and plot.procD.lm data("pupfish") gdf <- geomorph.data.frame(coords = pupfish$coords, Sex = pupfish$Sex, Pop = pupfish$Pop) fit <- procD.lm(coords ~ Pop * Sex, data = gdf, print.progress = FALSE) pc.plot <- plot(fit, type = "PC", pch = 19) shapeHulls(pc.plot) pc.plot <- plot(fit, type = "PC", pch = 19) groups <- interaction(gdf$Pop, gdf$Sex) shapeHulls(pc.plot, groups = groups, group.cols = c("dark red", "dark red", "dark blue", "dark blue"), group.lwd = rep(2, 4), group.lty = c(2, 1, 2, 1)) legend("topright", levels(groups), col = c("dark red", "dark red", "dark blue", "dark blue"), lwd = rep(2,4), lty = c(2, 1, 2, 1)) pc.plot <- plot(fit, type = "PC", pch = 19) shapeHulls(pc.plot, groups = gdf$Sex, group.cols = c("black", "black"), group.lwd = rep(2, 2), group.lty = c(2, 1)) legend("topright", levels(gdf$Sex), lwd = 2, lty = c(2, 1)) # Via gm.prcomp and plot.gm.prcomp data(plethspecies) Y.gpa <- gpagen(plethspecies$land) #GPA-alignment pleth.phylo <- gm.prcomp(Y.gpa$coords, phy = plethspecies$phy) summary(pleth.phylo) pc.plot <- plot(pleth.phylo, phylo = TRUE) gp <- factor(c(rep(1, 5), rep(2, 4))) shapeHulls(pc.plot, groups = gp, group.cols = 1:2, group.lwd = rep(2, 2), group.lty = c(2, 1)) legend("topright", c("P. cinereus clade", "P. hubrichti clade"), col = 1:2, lwd = 2, lty = c(2, 1))
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