[R] Cleaning

[Ashta]

Hi all,

I have a data frame with  huge rows and columns.

When I looked at the data,  it has several garbage values need to be

cleaned. For a sample I am showing you the frequency distribution
of one variables

    Var1 Freq
1    :    3
2    ]    6
3    MSN 1040
4    YYZ  300
5    \\    4
6    +     3
7.   ?>   15

and continues.

I want to keep those rows that contain only a valid variable value

In this  case MSN and YYZ. I tried the following

*test <- dat[dat$Var1 == "YYZ" | dat$Var1 =="MSN" ,]*

but I am not getting the desired result.

 I have

Any help or idea?

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