我的aes参数有问题;不知道它试图告诉我修复的是什么。
我的数据框是这样的:
> qualityScores
Test1 Test2 Test3 Test4 Test5
Sample1 1 2 2 3 1
Sample2 1 2 2 3 2
Sample3 1 2 1 1 3
Sample4 1 1 3 1 1
Sample5 1 3 1 1 2
其中1代表PASS,2代表WARN,3代表FAIL。
这是我的数据dput
:
structure(list(Test1 = c(1L, 1L, 1L, 1L, 1L), Test2 = c(2L, 2L,
2L, 1L, 3L), Test3 = c(2L, 2L, 1L, 3L, 1L), Test4 = c(3L, 3L,
1L, 1L, 1L), Test5 = c(1L, 2L, 3L, 1L, 2L)), .Names = c("Test1",
"Test2", "Test3", "Test4", "Test5"), class = "data.frame", row.names = c("Sample1",
"Sample2", "Sample3", "Sample4", "Sample5"))
我正在尝试制作一个热图,其中1代表格力,2代表黄色,3代表红色,使用ggplots2。
这是我的代码:
samples <- rownames(qualityScores)
tests <- colnames(qualityScore)
testScores <- unlist(qualityScores)
colors <- colorRampPalette(c("red", "yellow", "green"))(n=3)
ggplot(qualityScores, aes(x = tests, y = samples, fill = testScores) ) + geom_tile() + scale_fill_gradient2(low = colors[1], mid = colors[2], high = colors[3])
我收到此错误消息:
Error: Aesthetics must either be length one, or the same length as the dataProblems:colnames(SeqRunQualitySumNumeric)
我哪里错了?
谢谢。
答案 0 :(得分:5)
如果您将数据从宽格式转换为长格式,这将更容易。有很多方法可以做到这一点,但在这里我使用了reshape2
library(reshape2); library(ggplot2)
colors <- c("green", "yellow", "red")
ggplot(melt(cbind(sample=rownames(qualityScores), qualityScores)),
aes(x = variable, y = sample, fill = factor(value))) +
geom_tile() +
scale_fill_manual(values=colors)