要使用 barplot 函数创建堆叠条形图,我们需要使用矩阵而不是数据框对象,因为在 R 中,条形图函数只能用于向量或矩阵。如果我们想使用 barplot 函数创建堆积条形图,我们必须非常小心,因为条形图仅用于计数数据。在这里,您将看到一些计数和连续数据的示例,仔细阅读图表并了解图表之间的不同之处。
M1<−matrix(rnorm(40),ncol=4) M1输出结果
[,1] [,2] [,3] [,4] [1,] −1.3035243 1.3221939 1.9557782 0.1202694 [2,] −1.2548522 −1.7679306 0.5101073 0.9979115 [3,] 0.1095688 −1.5652809 1.1426236 −0.2278059 [4,] 0.6143122 −0.6680945 −0.9518161 0.7849978 [5,] 0.7078449 0.2490338 −1.1855153 0.3580386 [6,] −1.3651111 −1.2632633 −0.7954036 0.5127274 [7,] −0.4638549 −0.9650625 0.7063811 −2.2920743 [8,] −0.3006626 0.6249937 −0.5921453 0.5214382 [9,] 0.5874841 0.1630416 1.4858325 0.2483941 [10,] −0.5604357 −2.1200705 1.7315785 0.4596253
barplot(M1)输出结果
M2<−matrix(rpois(40,10),ncol=4) M2输出结果
[,1] [,2] [,3] [,4] [1,] 12 11 11 8 [2,] 9 14 7 5 [3,] 11 6 8 14 [4,] 5 10 10 9 [5,] 8 8 14 10 [6,] 12 12 12 11 [7,] 6 15 4 11 [8,] 12 6 10 10 [9,] 6 10 11 11 [10,] 13 7 15 7
barplot(M2)输出结果
M3<−matrix(sample(0:9,100,replace=TRUE),ncol=10) M3输出结果
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [1,] 2 8 7 4 3 2 1 1 1 4 [2,] 3 6 9 7 8 3 7 2 5 7 [3,] 7 1 3 9 7 9 7 0 5 7 [4,] 1 1 3 5 0 9 3 5 8 6 [5,] 4 2 6 2 3 8 4 8 2 8 [6,] 3 6 2 9 1 5 1 9 6 5 [7,] 2 1 9 3 6 8 1 3 2 2 [8,] 4 0 2 8 4 7 4 6 6 4 [9,] 0 6 9 9 7 5 8 2 0 7 [10,] 1 3 5 3 9 7 8 4 0 3
barplot(M3)输出结果