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a guest May 16th, 2018 101 Never
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  1. A   B   C
  2. 1   5   4.25    4.5
  3. 2   3.5 4   2.5
  4. 3   3.25    4   4
  5. 4   4.25    4.5 2.25
  6. 5   1.5 4.5 3
  7.    
  8. > c(a=5, b=4.25, c=4.5)
  9.   a   b   c
  10. 5.0 4.25 4.5
  11.    
  12. x[r,]
  13.    
  14. #Add your data
  15. x<-structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5), B = c(4.25, 4,
  16. 4, 4.5, 4.5), C = c(4.5, 2.5, 4, 2.25, 3)), .Names = c("A", "B",
  17. "C"), class = "data.frame", row.names = c(NA, -5L))
  18.  
  19. #The vector your result should match
  20. y<-c(A=5, B=4.25, C=4.5)
  21.  
  22. #Test that the items in the row match the vector you wanted
  23. x[1,]==y
  24.    
  25. > d <- data.frame(a=1:3, b=4:6, c=7:9)
  26.  
  27. > d
  28.   a b c
  29. 1 1 4 7
  30. 2 2 5 8
  31. 3 3 6 9
  32.  
  33. > d[1, ]
  34.   a b c
  35. 1 1 4 7
  36.  
  37. > d[1, ]['a']
  38.   a
  39. 1 1
  40.    
  41. x<-structure(list(A = c(5, 3.5, 3.25, 4.25, 1.5), B = c(4.25, 4,
  42. 4, 4.5, 4.5), C = c(4.5, 2.5, 4, 2.25, 3)), .Names = c("A", "B",
  43. "C"), class = "data.frame", row.names = c(NA, -5L))
  44. subset(x, A ==5 & b==4.25 && c==4.5)
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