res = super(RVector, self).__getitem__(i)
TypeError: 'str' object cannot be interpreted as an index
This answer is pretty much self explanatory. If you have a list or an array
you can access is items by using indices. For example list=['a','b'] To
access the first element ('a') you do list[0], so it is the same for R.
It is probably a better idea to just do reply to your previous examples
instead of opening a new thread.
Best,
Bruno
2010/2/9 John A Schroeder <[email protected]>
Hello again,
I am still working on variations of the "faithful" example. The last thing
I need to resolve is how to access R lists (and later maybe data frames)
from rpy2 (2.0.8). It seems the following code should allow access to items
in the list returned by the 'shapiro.test' object/function.
print
print "Shapiro-Wilks normality test of unavailability data"
shapiro_test = robjects.r('shapiro.test')
sw = shapiro_test(uaData)
print "W = %.4f" % sw['statistic']['W']
print "p-value = %.5f" % sw['p.value']
The following is the result:
Shapiro-Wilks normality test of unavailability data
Traceback (most recent call last):
File "D:\Users\roe\Eclipse\workspace\SimPyProjects\src\MachSim01.py",
line 228, in <module>
if __name__ == '__main__': main()
File "D:\Users\roe\Eclipse\workspace\SimPyProjects\src\MachSim01.py",
line 216, in main
print "W = %.4f" % sw['statistic']['W']
File "C:\Python26\lib\site-packages\rpy2\robjects\__init__.py", line 267,
in __getitem__
res = super(RVector, self).__getitem__(i)
TypeError: 'str' object cannot be interpreted as an index
If the above does not work, how do I access items in the returned list?
John A. Schroeder
Idaho National Laboratory
Battelle Energy Alliance, LLC
P.O. Box 1625
Idaho Falls, ID 83415-3850
Ph: 208-526-8755 FAX: 208-526-2930
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