使用 ggplot R 的熱圖

Question

我正在嘗試使用 ggplot2 在 R 中繪制熱圖。

我的數據示例如下所示：

tdftan1[1:513,]

structure(list(Row.names = structure(c("TCGA.02.0003.01", "TCGA.02.0010.01", 
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"TCGA.08.0522.01", "TCGA.12.0619.01", "TCGA.12.0620.01"), class = "AsIs"), 
    variable = list("A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
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        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
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        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", "A4GALT", 
        "A4GALT", "A4GALT", "A4GALT", "A4GALT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
        "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", "AASDHPPT", 
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    5.722253, 4.89972, 5.56538, 5.162661, 5.063488, 4.892427, 
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    )), row.names = c(NA, 513L), class = "data.frame")

融化的數據框中共有 362349 行和 3 列。

每次我使用 ggplot 運行以下代碼在 R 中繪制熱圖時：

tdftanplot<-ggplot(data=tdftan1, mapping=aes(variable, Row.names , fill= value)) +
    geom_tile()
tdftanplot

我面臨同樣的錯誤（雖然值是類數字和變量 & Row.name 是類字符）：

Error in abs(x) : non-numeric argument to mathematical function

融化的數據框有問題嗎？ 我應該做些什么來獲取熱圖？

Answer 1

您的 Row.names 列屬於“AsIs”類。 您需要將其更改為“字符”。 此外， variable列是一個列表，因此您需要更改為“字符”。

library(tidyverse)

class(tdftan1$Row.names)
#> [1] "AsIs"

# now change
class(tdftan1$Row.names) <- 'character'

# also change variable from list to character 
tdftan1 <- tdftan1 %>% mutate(variable = as.character(variable))

tdftanplot<-ggplot(data=tdftan1, mapping=aes(variable, Row.names , fill= value)) +
  geom_tile()

tdftanplot

^{由reprex 包於 2022-06-18 創建 (v2.0.1)}