怎麼在python裡呼叫R
阿新 • • 發佈:2019-01-12
1.安裝[windows]
conda install rpy2
2.把R的路徑新增在環境變數中
如果用pip install rpy2 報錯了Tried to guess R's HOME but no R command in the PATH
2.具體呼叫可見教程
一般的例子【具體見https://yulongniu.bionutshell.org/blog/2012/08/21/python-r-rpy2/】
from rpy2.robjects import r
r('''f <- function(r){pi * r}''')
r.f(3)
如果要匯入R中的包
from rpy2.robjects.packages import importr
r('''install.packages('hwriter')''') #安裝包
r('''
hwriter:::hwrite.table(matrix(1:10, 2))
''')
3.備註
把Rdata.frame轉化為pd.DataFrame https://stackoverflow.com/questions/20630121/pandas-how-to-convert-r-dataframe-back-to-pandas
from rpy2.robjects import pandas2ri
corr_df_in_R = pandas2ri.py2ri_pandasdataframe(pd.DataFrame(corr_matrix)) #py_df --> r_df