[ferret_users] How to assign new value to a column

["Changshui Xia" <xiacs@xxxxxxxxxx>]

Dear ferreters,

  I have a netcdf data such as temp[600,500], I want to assign the average value of column 50 and column 52 to column 51.

eg.  temp[51,:] equal to 0.5*(temp[50,:] +temp[52,:] )

How to achieve this using ferret?

 

Thank you in advance.

 

Changshui