search for: zeespan

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2011 Aug 13
2
How do I subset a dataframe
I have a dataframe zeespan. One of the columns has the name "customer". The data in the customer column is text. I would like to return a subset of the dataframe with all rows that DON'T begin with either "ibm" or "exxon", or "sears" in the customer column. I tried .... subset(ze...