强制原点从 0 开始 [英] Force the origin to start at 0

问题描述

如何在ggplot2中设置y轴和x轴的原点/截距?

How can I set the origin / interception of the y-axis and x-axis in ggplot2?

x 轴的直线应该正好位于 y=Z.

The line of the x-axis should be exactly at y=Z.

使用 Z=0 或其他给定值.

With Z=0 or another given value.

推荐答案

xlim 和 ylim 不在这里切.您需要使用 expand_limits、scale_x_continuous 和 scale_y_continuous.试试:

xlim and ylim don't cut it here. You need to use expand_limits, scale_x_continuous, and scale_y_continuous. Try:

df <- data.frame(x = 1:5, y = 1:5)
p <- ggplot(df, aes(x, y)) + geom_point()
p <- p + expand_limits(x = 0, y = 0)
p # not what you are looking for

p + scale_x_continuous(expand = c(0, 0)) + scale_y_continuous(expand = c(0, 0))

您可能需要稍微调整一下以确保点不会被切断(例如，请参见 x = 5 和 y = 5 处的点.

You may need to adjust things a little to make sure points are not getting cut off (see, for example, the point at x = 5 and y = 5.

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