我在Python中使用R的spi函数。其中一个参数(“内核”)需要一个列表,我不确定在使用rpy2时如何通过它。 R语法如下( with “kernel”参数):
library("lmomco", lib.loc="~/lib/R_libs")
library("SPEI", lib.loc="~/lib/R_libs")
data = read.csv("rainfall_data.csv", header = FALSE)
result = spi(data, scale=10, distribution='Gamma', fit='max-lik', kernel = list(type='rectangular', shift=0))
到目前为止我的Python脚本(没有使用“kernel”参数)如下:
import numpy as np
from rpy2.robjects.packages import importr
importr('lmomco')
SPEI = importr('SPEI')
import rpy2.robjects.numpy2ri as numpy2ri
numpy2ri.activate()
data = np.genfromtxt('rainfall_data.csv', delimiter=',')
result = np.array(SPEI.spi(data, scale=10, distribution='Gamma', fit='max-lik')[1])
如何将内核作为rpy2的列表传递?
答案 0 :(得分:2)
考虑从python字典创建ListVector,然后将其传递给方法:
import rpy2.robjects as robjects
...
x = robjects.ListVector({'type': 'rectangular', 'shift': 0})
result = np.array(SPEI.spi(data, scale=10, distribution='Gamma', fit='max-lik', kernel=x)[1])