Pau*_*ano 4 plot datetime r ggplot2 posixct
我曾尝试通读 stackoverflow、博客、书籍等,但无法在 R 中以以下格式(HH:MM:SS.000)和 y- 上的另一个数量找到有关在 x 轴上绘制时间的答案轴。我有以下数据集:
Time EcNo
12:54:09.000 -14.47
12:54:10.000 -17.96
12:54:11.000 -15.97
12:54:12.000 -14.61
12:54:13.000 -12.68
12:54:14.000 -10.73
12:54:15.000 -10.54
12:54:16.000 -11.62
12:54:17.000 -12.49
12:54:18.000 -11.12
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我将如何以 HH:MM:SS.000 格式在 Yaxis vs Time(x 轴) 上绘制 EcNo,如上所示。
老实说,我会很感激一些帮助。非常感谢
您也可以尝试ggplot:
library(ggplot2)
df$time <- as.POSIXct(strptime(df$Time, format="%H:%M:%S"))
# Automatic scale selection
ggplot(data = df, aes(x = time, y = EcNo)) + geom_point()
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scale_x_datetime是一个ggplot函数,但对于好的参数date_breaks,date_format你需要包scales:
library(scales)
ggplot(data = df, aes(x = time, y = EcNo)) + geom_point() +
scale_x_datetime(breaks = date_breaks("1 sec"), labels = date_format("%S"))
ggplot(data = df, aes(x = time, y = EcNo)) + geom_point() +
scale_x_datetime(breaks = date_breaks("1 sec"), labels = date_format("%OS3"))
ggplot(data = df, aes(x = time, y = EcNo)) + geom_point() +
scale_x_datetime(breaks = date_breaks("4 sec"), labels = date_format("%M:%S"))
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