小编DrA*_*ing的帖子

我正在使用 Rmarkdown 生成漂亮的文档（如使用 LaTex），但有一个我无法解决的问题。

我正在以下列方式打印图形：

```{r p(s|r)}

pleft=function(x, p=0.5){dnorm(x, mean=35, sd = 10)*p/(dnorm(x, mean=35, sd 
= 10)*p+dnorm(x, mean=65, sd = 10)*(1-p))}
pright=function(x, p=0.5){dnorm(x, mean=65, sd = 10)*(1-p)/(dnorm(x, 
mean=35, sd = 10)*p+dnorm(x, mean=65, sd = 10)*(1-p))}

pleft50= function(x){pleft(x, 0.5)}
pright50=function(x){pright(x, 0.5)}

curve(pleft50, from=-10, to=110, xlab="Firing Rate r (Hz)", ylab="p(s|r)", 
col="red", lwd=2)
curve(pright50, from=-10, to=110, xlab="Firing Rate r (Hz)", ylab="p(s|r)", 
col="blue", lwd=2, add=TRUE)
legend("right", legend = c("p(Left|r)","p(Right|r)"), col=c('red', 'blue'), 
lwd = 2)
title("Posteriors")

```

这在每个先例代码块和文档中都以相同的方式工作，但是现在当我编织文档时它会引发此错误：

png(..., res = dpi, units = "in") …