我如何绘制有限点的线条和点？ [英] How do I plot lines and points with limited points?

问题描述

我试图以更清晰的方式重新绘制下图。观察我正在尝试绘制线条和点。但是，正在打印的点数太多了，线条被掩盖了。有什么方法可以绘制：

• 不同数据集的不同行


• 不同的数据集，但限制点的数量为30-50


• 添加线条和点信息到图例

我的绘图代码是这里（对SO来说太大了）

解决方案

你需要这样的东西吗？

  transData $ Type2<  -  factor（transData $ Type，labels = c（Some Info for P，Some Info for Q））
 ggplot（transData，aes（x = Value，y = ecd）） + 
 geom_line（aes（group = Type2，color = Type2，linetype = Type2），size = 1.5）+ 
 geom_point（aes（shape = Type2），data = transData [round（seq（1， nrow（transData），length = 30）），]，size = 5）+ 
 opts（legend.positi on =top，legend.key.width = unit（3，line））
  

I am trying to replot the following figure in a more legible way. Observe that I am trying to plot both lines and points. However, the number of points being printed is way too many and the line is getting covered up. Is there a way I can plot:

• Different lines for different datasets
• Different points shapes for different datasets but limit the number of points to say 30-50
• Add the line and point information to the legend

My plotting code is here (It was too big for SO)

解决方案

Do you need something like this?

transData$Type2 <- factor(transData$Type, labels = c("Some Info for P", "Some Info for Q"))    
ggplot(transData, aes(x=Value, y=ecd)) + 
  geom_line(aes(group=Type2,colour=Type2, linetype=Type2), size=1.5) + 
  geom_point(aes(shape = Type2), data = transData[round(seq(1, nrow(transData), length = 30)), ], size = 5) +
  opts(legend.position = "top", legend.key.width = unit(3, "line"))

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