[R] Function for misclassification rate/type I,II error??

[Tirthadeep]

HI 

Is there any function in R that tells us error rate(misclassification rate)
for logistic regression type classification?

i also want to know the function to determine type I and type II  error.

I have found a link where "misclass" and "confusion" are used. But I dont
know the package name.

http://alumni.media.mit.edu/~tpminka/courses/36-350.2001/lectures/day32/
http://alumni.media.mit.edu/~tpminka/courses/36-350.2001/lectures/day32/ 

Waiting for reply. 
regards.
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