An object of oce.

A list specifying flag values upon which actions will be taken. This can take two forms. In the first, the list has named elements each containing a vector of integers. For example, salinities flagged with values of 1 or 3 through 9 would be specified by flags=list(salinity=c(1,3:9)). Several data items can be specified, e.g. flags=list(salinity=c(1,3:9), temperature=c(1,3:9)) indicates that the actions are to take place for both salinity and temperature. In the second form, flags is a list with unnamed vectors, and this means to apply the actions to all the data entries; thus, flags=list(c(1,3:9)) means to apply not just to salinity and temperature, but also to everything else that is in the data slot. If flags is not provided, then defaultFlags is called, to try to determine a conservative default.

An optional list that contains items with names that match those in the flags argument. If actions is not supplied, the default will be to set all values identified by flags to NA; this can also be specified by specifying actions=list("NA"). It is also possible to specify functions that calculate replacement values. These are provided with object as the single argument, and must return a replacement for the data item in question. See “Details” for the default that is used if actions is not supplied.

An optional integer specifying the degree of debugging, with value 0 meaning to skip debugging and 1 or higher meaning to print some information about the arguments and the data. It is usually a good idea to set this to 1 for initial work with a dataset, to see which flags are being handled for each data item. If not supplied, this defaults to the value of getOption("oceDebug").