Extracting first value of each month
Hello,
How do you extract the first value (plus the date) of each month out of
a series?
Example
2/4/05 data
2/12/05 data
2/13/05 data
3/1/05 data
3/2/05 data
etc
In this sample I only want to pull:
2/4/05 data
3/1/05 data
In reality I have a large dataset I am working with (15 years with
weekly entries). I just want to pull the first value (and date) of each
month.
Thanks in advance for any help.
Al
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