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dea.csv
y1 y2 x1 x2 x3
20818.89 406987.07 264806.95 3998 340244.15
14479.76 174703.22 146823.04 4179 131544.52
904.18 12587.72 25401.48 929 7862.49
3328.15 313829.38 215305.84 1674 279184.52
31047.86 327888.54 417338.19 6656 240468.29
21627.37 253739.73 475780.83 5210 164915.04
2956.68 62213.18 163304.52 540 45263.7
1964.39 249315.82 255716.76 1876 220412.48
2165.19 117318.03 115885.38 869 108008.7
9586.89 191067.6 232136.41 3325 158022.8
584.47 140788.65 161578.74 1392 127160.69
dea=read.csv("dea.csv", sep=",",header=T, colClasses= c('character', rep.int('numeric', 4)))
dea$y1
#"20818.89" "14479.76" "904.18" "3328.15" "31047.86" "21627.37"
"2956.68" "1964.39" "2165.19" "9586.89" "584.47"
dea$y2
#406987.07 174703.22 12587.72 313829.38 327888.54 253739.73
62213.18 249315.82 117318.03 191067.60 140788.65
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