摆脱y = 0时R密度图密度中的灰线 [英] Get rid of gray line in R density plot density at y = 0

问题描述

我有一个要保存在eps文件中的密度图。

I have a density plot that I want to save in an eps file.

我的密度图有点像

setEPS()
postscript("myfile.eps")
plot(density(rnorm(1000)))
dev.off()

仅包含我的数据，但稍微复杂一点（更改标签和页边距，在顶部放更多行

just with my data and a little bit more complex (changing labels and margins, more lines on top of it, etc).

我的问题是我在y = 0的密度图上方有一条烦人的水平细灰色线，我想

My problem is that I get an annoying, horizontal thin gray line on top of my density plot at y = 0, and I'd like to get rid of it.

直接绘制到X设备上时，我没有得到水平灰线，但在附言中，我总是这样做。

When plotting directly to the X device I don't get this horizontal gray line, but in postscript I always do.

我尝试使用 dev.copy2eps 和 cairo_ps（） postscript（），但我仍然能看到灰线。

I've tried using dev.copy2eps and also cairo_ps() instead of postscript(), but I still get the grey line.

我还尝试了使用不同的（和随机数据），其绘制非常简单，例如上面的代码块，并且仍然在后记中显示灰线。

I've also tried using different (and random) data, with a very simple plot like the code block above, and still get the grey line in the postscript.

您知道如何摆脱这一行吗？

Does anyone know how to get rid of this line?

推荐答案

阅读帮助页面：

?plot.density

zero.line .......逻辑;如果为TRUE，则在y = 0处添加一条基线。

zero.line.......logical; if TRUE, add a base line at y = 0

我将承认我没有通过阅读帮助页面来发现这一点。我查看了 density.default 的代码，发现没有任何用处，然后尝试了 plot.density ，却什么也没得到，找到消息，然后尝试：

I will admit that I didn't discover this by reading the help page. I had looked at the code for density.default, found nothing useful, then tried plot.density, got the nothing, found message, and then tried:

> getAnywhere(plot.density)

产生了这个...让我意识到 I 应该从帮助页面开始：

Which produced this ... making me realize that I should have started with the help page:

A single object matching ‘plot.density’ was found
It was found in the following places
  registered S3 method for plot from namespace stats
  namespace:stats
with value

function (x, main = NULL, xlab = NULL, ylab = "Density", type = "l", 
    zero.line = TRUE, ...) 

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