Calculations on empty fields

[micksom]

All,

I have a large dataset in which the majority of the cells are not populated, indicated by a '.'. This was a result of creating columns when I executed a proc transpose.

	A	B	C	A + B + C (CALCULATION)
1	.	10	15	.
2	20	10	20	50
3	.	.	.	.

1. In datastep when I try to calculate A + B + C for row 1 in the above example, the returned value is . ,rather than 25. How do I perform a sum across columns when one or more of the fields is empty.

2. Alternatively, is there a quick way of doing an if A = . then A = 0 across two hundred columns, without having to do an if statement for all columns. Can this be done across the whole database.

3. Alternatively, is there something I can do in the proc transpose which populates the fields as 0s rather than . s

Any help would be greatly appreciated !

Regards,

Michael

[Haikuo]

Sum() function: Sum(a,b,c)

[data_null__]

Better still leave out the transpose and just SUM the values using PROC SUMMARY using the same BY statement you used in PROC TRANSPOSE.