[英]rpy2 running R function
我有一個R功能
square_num <- function(x) {
return(x*x)
}
當我通過rpy2運行它時:
from rpy2.robjects.packages import SignatureTranslatedAnonymousPackage as STAP
string = """
square_num <- function(x) {
return(x*x)
}
"""
testy = STAP(string, "testy")
Jack = testy.square_num(10)
print(Jack)
有用。
當我在R文件中包含函數並使用來運行它時
from rpy2.robjects.packages import SignatureTranslatedAnonymousPackage as STAP
with open('Algo.r', 'r') as f:
string = f.read()
testy = STAP(string, "testy")
Jack = testy.square_num(10)
print(Jack)
我得到:
Traceback (most recent call last):
File "Main.py", line 25, in <module>
testy = STAP(string, "testy")
File "/usr/local/lib/python2.7/dist-packages/rpy2/robjects/packages.py", line 290, in __init__
reval(string, env)
File "/usr/local/lib/python2.7/dist-packages/rpy2/robjects/packages.py", line 75, in reval
p = rinterface.parse(string)
rpy2.rinterface.RParsingError
兩種情況下的功能相同。 我只是復制並粘貼到.r文件中?
您是否檢查了Python變量string
的內容?
以下應該工作:
from rpy2.robjects.packages import SignatureTranslatedAnonymousPackage as STAP
string = """
square_num <- function(x) {
return(x*x)
}
"""
testy = STAP(string, "testy")
Jack = testy.square_num(10)
print(Jack)
with open('algo.R', 'w') as fh_out:
fh_out.write(string)
with open('algo.R', 'r') as f:
string_again = f.read()
testy = STAP(string_again, "testy")
Jack = testy.square_num(10)
print(Jack)
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