如何在我的热图中仅将基因名称设为斜体（使用 R）？

Question

我正在用 R (gplots) 绘制热图，我只想将我的基因名称用斜体显示（在我的示例中 - gene1、gene2 和 gene3）。例如：

df <- data.frame(Gene = c ("gene1", "gene2",  "gene3"), value = c(3, 2, 2.5), time = c("10d","10d","10d"))
gplots::heatmap.2(cbind(df$value, df$value), trace= "none", Colv = NA, labCol = "", labRow = df$Gene, Rowv=FALSE)

我试过了（没用）：

df <- data.frame(Gene = c ( expression(italic("gene1", "gene2",  "gene3"))), value = c(3, 2, 2.5), time = c("10d","10d","10d"))

或

df <- data.frame(Gene = expression(italic(c ("gene1", "gene2",  "gene3"))), value = c(3, 2, 2.5), time = c("10d","10d","10d"))

有什么建议吗？

Answer 1

这将以编程方式进行：

gene_list <- as.character(df$Gene)

make_italics <- function(x) {
  as.expression(lapply(x, function(y) bquote(italic(.(y)))))
}

heatmap.2(
  cbind(df$value, df$value),
  trace = "none",
  Colv = NA,
  labCol = "",
  labRow = make_italics(gene_list),
  Rowv = FALSE
)

如何在我的热图中仅将基因名称设为斜体（使用 R）？

How to italicize just gene names in my heatmap (using R)?

r

heatmap

italic