Solve R speed Too slow problem

R Slow has been criticized, recently done a larger dataset analysis, ran too slow, found that the crux is R Data frame index too slow:

The following tests are:

Gene_list = 1:100000= matrix (nrow = Length (gene_list), Ncol = 7= As.data.frame (Matrix (nrow = Length (gen e_list), Ncol = 7=return(1:7)#  test eqtlsystem.time (         return  (Try_func () )))

# # User System elapsed

# # 0.108 0.001 0.108

System.time (        for in 1: Length (gene_list)) {                 = try_func ()        })

# # 0.137 0.000 0.138

System.time (        for in 1: Length (gene_list)) {         = try_func ()        })

# # User System elapsed

# # 90.623 165.868 259.065

System.time (        for in 1: Length (gene_list)) {        = 1:7        })

# # User System elapsed
　　# # 0.089 0.000 0.090

Did you see the results? It's too shock! Data frame is really not suitable for big data!

Solve R speed Too slow problem