如何在 Rpy2 中等待？

Question

我已经使用 rpy2 绘制了一个图表。我正在使用 Eclipse。当我运行代码时，情节只会闪烁 1 秒然后消失。如何使图表保持不变？我的代码是：

#!/usr/bin/python

import rpy2.robjects as robjects
r = robjects.r

r('x = c(1, 2, 3)')
r('y = c(6, 7, 8)')

r('plot(x, y)')

Answer 1

Terminating an R process closes interactive plotting windows left open... and this is what is happening at the end of your (Python) script.

If you have to keep your Python process alive (since the embedded R depends on it), there are several strategies. The simplest might be to add at the end:

import time
while True:
    time.sleep(1)

Answer 2

You could use Rstudio, this does does kill the window instantly. Alternatively, dump the plot to file using eg png .

Answer 3

Start the program manually with python your_program.py . It must be a colateral from using eclipse

Answer 4

from rpy2.robjects.packages import importr
import rpy2.robjects as robjects

grdevices = importr('grDevices')

def mainloop():
    while True:
        if isinstance(grdevices.dev_list(), type(robjects.NULL)):
            break

robjects.r('x = c(1, 2, 3)')
robjects.r('y = c(6, 7, 8)')

robjects.r('plot(x, y)')
mainloop()