在R中运行多行以创建数据对象

我正在使用以下代码在Rstudio中生成PCA图：

col <- c(rep("orange2", 9), rep("red", 16), rep("forestgreen", 11))
pca <- prcomp(t(counts))
plot(pca$x[,1:2], xlab="", ylab="", col=col, pch=20, cex=2, type="n") +
text(pca$x[,1:2], sample, col=col) +
lam <- pca$sdev
v <- lam^2
v <- v/sum(v)
k1 <- round(100*v[1], 2)
k2 <- round(100*v[2], 2)
title(main=paste("All samples,", k1+k2, "% of variance explained"), xlab=paste(k1, "% of 
variance explained"), ylab=paste(k2, "% of variance explained")) +
legend(-80, -25, c("PEDIS:2", "PEDIS:3", "PEDIS:4"), text.col=c("orange2", "red", 
"forestgreen"), cex=0.8)

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col您尚未共享eg的可复制数据-什么是
计数
？什么是pca

？看看这篇文章，你说的合并是什么意思？