尽管有+ geom_line()，但图表中没有线 [英] No line in plot chart despite + geom_line()

问题描述

我已经阅读了文档，我认为我的代码应该是正确的，但是输出中的两点之间仍然没有任何界限.怎么了?

I've read documentation and I think that my code should be right, but still there is no line between the points in the output. What is wrong?

x'轴是离散的，y'轴是连续的.

The x'axis is discrete and y'axis is continuous.

我的代码

 point.sqrmPrice  <- ggplot(overview.df, aes(x = areaSize, y = sqrmPrice)) + 
      geom_line() +
      geom_point() + 
      scale_y_continuous(breaks = c(seq(min(overview.df$sqrmPrice), max(overview.df$sqrmPrice), by = 10000) )) + 
      theme_bw()

推荐答案

您没有得到一行，因为areaSize是一个因素.用

You are not getting a line because areaSize is a factor. Convert to numeric with

overview.df$areaSize <- as.numeric(as.character(overview.df$areaSize))

然后进行绘制.

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