如何创建 R 数据框中所有列的直方图?
r programmingserver side programmingprogramming更新于 2025/4/12 12:07:17
要创建 R 数据框中所有列的直方图，我们可以使用 Hmisc 包的 hist.data.frame 函数。例如，如果我们有一个包含五列的数据框 df，那么可以使用一行代码 hist.data.frame(df) 创建所有列的直方图。
示例
考虑下面的数据框 −
set.seed(9) x1<-rnorm(20,5,1.09) x2<-rnorm(20,5,0.80) x3<-rnorm(20,5,0.50) x4<-rnorm(20,5,0.02) x5<-rnorm(20,5,0.15) df<-data.frame(x1,x2,x3,x4,x5) df
输出
x1 x2 x3 x4 x5 1 4.164192 6.405594 4.595772 5.005624 5.017111 2 4.110060 5.145802 3.990309 4.975946 4.841951 3 4.845727 4.786489 4.630638 5.009303 5.023400 4 4.697411 5.741137 5.191443 5.007040 5.195059 5 5.475575 4.445334 5.865432 4.988203 4.826617 6 3.706309 7.145592 4.898459 4.982928 5.032406 7 6.299266 5.178020 4.501801 4.995065 5.120672 8 4.980173 4.434662 4.346732 5.030787 4.890183 9 4.729588 5.333771 4.501084 5.010922 4.757285 10 4.604399 5.295645 4.717486 5.031299 5.125860 11 6.392552 4.268989 5.876029 5.004993 4.947284 12 4.488902 4.746468 4.726114 4.960752 4.892557 13 5.077449 5.839247 4.570737 4.983819 4.858956 14 4.710018 5.134489 5.024647 4.990026 5.109525 15 7.011330 5.025152 4.899978 5.006102 4.934319 16 4.085000 4.191736 4.448023 4.994216 4.962593 17 4.915582 5.306201 5.120294 5.029154 4.899189 18 2.146701 4.344243 5.190557 5.017475 5.120152 19 5.967794 5.289369 6.115229 4.980941 4.776671 20 4.228834 5.074697 5.599601 4.999366 5.068102
加载 Hmisc 包并为数据框 df − 的所有列创建直方图
示例
library(Hmisc) hist.data.frame(df)
输出
让我们看另一个例子 −
示例
y1<-rnorm(5000,5,1.09) y2<-rnorm(5000,5,0.80) y3<-rnorm(5000,5,0.50) y4<-rnorm(5000,5,0.02) df_y<-data.frame(y1,y2,y3,y4) head(df_y,20)
输出
y1 y2 y3 y4 1 7.360122 2.477397 5.692058 4.997948 2 2.834658 5.737269 5.038057 4.995741 3 4.877497 4.688126 4.400630 5.018846 4 7.241674 5.875059 5.376843 4.987899 5 3.871008 3.597722 4.785035 5.012924 6 5.148704 5.933472 5.349004 4.952439 7 5.908375 5.956353 5.606131 4.966737 8 4.537790 4.034598 5.473110 4.969043 9 4.725682 4.965986 4.771915 5.027725 10 4.678440 4.453948 5.607061 5.011792 11 5.387485 5.280068 5.693234 4.979037 12 4.057784 6.449363 5.357565 5.004431 13 3.429349 5.513883 5.054941 5.018333 14 5.102066 5.222584 4.907678 4.966319 15 4.983114 4.286539 4.471304 5.009501 16 6.535382 4.201185 4.994638 5.006412 17 2.647908 4.998439 4.741445 5.006141 18 6.798399 4.785914 6.068729 5.003509 19 5.574891 4.538196 4.722987 5.017613 20 4.149567 5.098584 4.476465 4.990768
为数据框 df_y 的所有列创建直方图 −
示例
hist.data.frame(df_y)
输出
