Hide some columns in alv if no values are present for that columns ..

Hi all,
This looks like a wierd requirement ..In my ALV report, i am displaying around 30 fields. Among those , based on the input ,data will not be there for some of the columns .. In the output we want to hide those columns
eg:
Matnr     Descr    Column3 Column4
Mat1      Des1     (No data) sfsfs
Mat2      Des2     (No data) (No data)
The required output is :
Matnr     Descr    Column4
Mat1      Des1     sfsfs
Mat2      Des2     (No data)
How to do this in the most simplest / right way?
Hope my question is clear .
Thanking you in advance,
Shankar

Hi shankara,
1. In the output we want to hide those columns
For this,
a) first we have to know/detect by looping the table/logic
     that which fields contain no data / are to be hidden
   b) after that we have to use the field catalogue properties.
    c) We have to loop at the fieldcatalogue,
        and set the value fieldcat-NO_OUT = 'X'.
       for those fields.
    (In this manner, those fields/columns won't be shown)
regards,
amit m.

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