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check_ia examines both the interest area IDs and interest area labels (and their mapping) for both eyes. It returns a summary of the information and will stop if the data are not consistent with the requirements for further processing.
check_ia
check_ia(data)
A data table object output by relabel_na.
relabel_na
The value(s) and label(s) of interest areas and how they map for each eye.
# NOT RUN { library(VWPre) # Check the interest area information... check_ia(dat) # }
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