There is no explicit way to merge data sets at this time in CODAP, but you can create an attribute that refers to the value of an attribute in another data set.
Suppose you have data set “Climate” as above with “Year” as an attribute, and you have another, “Lyme Disease”, with attributes, “Year” and “Incidence”. You can create an attribute “occurrences” in “Climate” and bring over the values from the other data set with a formula:
lookupByKey(“Lyme Disease”, “occurrences”, “Year”, Year)
You can do this with as many attributes as necessary to, effectively, merge the data sets.
Jonathan