Displaying 2 results from an estimated 2 matches for "q29".
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29
2009 Nov 12
1
Transforming a dataframe into a response/predictor matrix
...du ## 10295236 9/3/2008
Xattempts Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19
1 1 1 1 0 0 0 0 0 0 0 1 0 0 1 1 0 1 1 0 1
2 1 1 1 1 1 1 0 1 0 0 1 1 0 0 1 0 0 0 0 1
Q20 Q21 Q22 Q23 Q24 Q25 Q26 Q27 Q28 Q29 Q30 Q31 Q32 Score Form CRSE_GRADE_OFF
1 0 0 0 0 0 0 0 0 0 1 0 0 0 9 E D
2 0 0 0 0 0 0 0 0 0 0 1 1 0 13 G D
Each student took a pre- and post- test indicated by the date under "Start", column 7. (a...
2009 Feb 24
2
using perl regular expression
Hello everybody!
I'm using Perl regular Expression for find pattern in my data set.
The pattern is: NaQxy, where a=E, F, G or H and xy != 29. I have tried this:
pattern <- "^N[E-H]Q[0-9]{2,2}"
index <- grep(pattern, X, perl=T) #where X is my vector
But the problem is the xy should not be 29. How can I solve this problem.
Thanks!!!
Regards,
Katrine
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