how to make a average in two data files

[sh zhou]

Dear All,

I have two output data files, one is "March" output data, another is "April"
output, I want to make a average of "t" ( temperature) during Mar and Apr, I
just can open one output data at a time, please tell me how to do that.

When do a average , there are two method that I know, one is use "
sum(t,t=1, t=N)",  another is " do while", Is there any difference? Are they
the same?

Thank you.

--

Shenghui                  Student
Major:                         Physics
HuNan University         China
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20090610/ad8c5944/attachment.html