这篇文章主要介绍了ggplot2笛卡尔坐标系x、y轴怎么互换的相关知识,内容详细易懂,操作简单快捷,具有一定借鉴价值,相信大家阅读完这篇ggplot2笛卡尔坐标系x、y轴怎么互换文章都会有所收获,下面我们一起来看看吧。
library('ggplot2') library('reshape2') A = c("A","B","C","D","E") B = c(90,34,56,99,15) C = c(50,20,24,70,14) dat = data.frame(A,B,C) names(dat) = c("type","sample1","sample2") dat = melt(dat,variable.name="Sample",value.name = "Num") head(dat) p = ggplot(dat, aes(x = type,y = Num,fill = Sample))+ geom_bar(stat ="identity",width = 0.6,position = position_dodge(width=0.8))+ scale_fill_manual(values = c("red","blue"))+ labs(x = "",y = "", title = "test")+ geom_text(aes(label = dat$Num),position=position_dodge(width = 0.9),size = 5,vjust = -0.25)+ guides(fill = guide_legend(reverse = F))+ theme(plot.title = element_text(size = 25,face = "bold", vjust = 0.5, hjust = 0.5), legend.title = element_blank(), legend.text = element_text(size = 18, face = "bold"), legend.position = 'right', legend.key.size=unit(0.8,'cm')) p=p+coord_flip() p
不过由此可知,进行坐标互换之后,原来的设置中关于文字图层中文字位置需要进行调整,具体调整vjust和hjust即可。譬如:
library('ggplot2') library('reshape2') A = c("A","B","C","D","E") B = c(90,34,56,99,15) C = c(50,20,24,70,14) dat = data.frame(A,B,C) names(dat) = c("type","sample1","sample2") dat = melt(dat,variable.name="Sample",value.name = "Num") head(dat) p = ggplot(dat, aes(x = type,y = Num,fill = Sample))+ geom_bar(stat ="identity",width = 0.6,position = position_dodge(width=0.8))+ scale_fill_manual(values = c("red","blue"))+ labs(x = "",y = "", title = "test")+ geom_text(aes(label = dat$Num),position=position_dodge(width = 0.9),size = 5,vjust = 0.5,hjust=-0.25)+ guides(fill = guide_legend(reverse = F))+ theme(plot.title = element_text(size = 25,face = "bold", vjust = 0.5, hjust = 0.5), legend.title = element_blank(), legend.text = element_text(size = 18, face = "bold"), legend.position = 'right', legend.key.size=unit(0.8,'cm')) p=p+coord_flip() p
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