在r中改变ggbiplot中的点颜色和形状

本文介绍了在r中改变ggbiplot中的点颜色和形状的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我使用ggbiplot（）并希望操作数据点的颜色和形状，使它们更易于打印。目前，我从ggbiplot（）获得了默认的彩虹。我尝试过使用参数+ scale_colour_discrete和+ scale_shape_manual，但groups =参数ggbiplot似乎覆盖了这些参数。如果我消除groups =参数，则不能绘制椭圆。 +主题的论点工作得很好。我的代码如下。我知道我可以在常规biplot（）函数中更容易地操纵颜色/形状，但我喜欢ggbiplot（）提供的置信区间椭圆。 g groups = fieldnames，ellipse = TRUE，ellipse.prob = 0.68，varname.size = 4） $ bg g g legend.position ='top'） print（g ） 解决方案添加 geom_point（ ）参数到您的ggplot脚本和 scale_color_manual 来覆盖组默认颜色，而无需像这样更改分组向量： g 组= fieldnames，ellipse = TRUE，ellipse.prob = 0.68，varname.size = 4）+ geom_point（aes（color = fieldnames），size =your size）+ scale_color_manual （values = c（17,16,16,16,16,16））+ theme_bw（）+ theme（legend.direction ='horizo​​ntal'， legend.position =' （'） $ b print（g） 这应该可行！ p> I am using ggbiplot() and would like to manipulate the colors and shapes of the datapoints to make them more printer friendly. Currently I get the default rainbow of colors from ggbiplot(). I have tried using the arguments "+ scale_colour_discrete" and "+ scale_shape_manual" but the "groups=" argument ggbiplot seems to override these. If I eliminate the "groups=" argument then ellipses can't be drawn. The "+ theme" argument works just fine. My code is below. I know I could manipulate the colors/shapes more easily in the regular biplot() function, but I like the confidence interval ellipses provided by ggbiplot(). g <- ggbiplot(size.pca, choices=1:2, obs.scale = 1, var.scale = 1, groups=fieldnames, ellipse = TRUE,ellipse.prob=0.68, varname.size=4)g <- g + scale_colour_discrete(name=" ") #only the name=" " part of this seems to work.g <- g + scale_shape_manual(values=c(17,16,16,16,16,16), name= " ") #trying to indicate one population different from the rest, but it doesn't seem to do anything (no error either, just no change in the output).g <- g + theme_bw() +theme(legend.direction = 'horizontal', legend.position = 'top')print(g) 解决方案 add a geom_point() argument to your ggplot script and the scale_color_manual to override the group default colour without changing the grouping vector like this:g <- ggbiplot(size.pca, choices=1:2, obs.scale = 1, var.scale = 1, groups=fieldnames, ellipse = TRUE,ellipse.prob=0.68, varname.size=4) +geom_point(aes(colour = fieldnames), size = "your size") +scale_color_manual(values=c(17,16,16,16,16,16)) +theme_bw() +theme(legend.direction = 'horizontal', legend.position = 'top')print(g)This should work! 这篇关于在r中改变ggbiplot中的点颜色和形状的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！