Check if values can be safely coerced without introduction of missing values
This might be named "coercesSafely" or such. If values cannot be coerced into class specified, then values must be incorrect.
checkCoercion(value, targetclass, na.strings = c("\\.", "", "\\s+",
"N/A"))value |
Character vector of values, such as value_new or value_old for one variable in a key. |
targetclass |
R class name |
na.strings |
Values that should be interpreted as R NA. These are ignored in the coercion check. |
either TRUE, or a vector of values which are not successfully coerced
Paul Johnson <pauljohn@ku.edu>
x1 <- c("TRUE", "FALSE", FALSE, TRUE, NA, ".", "N/A", " ", "")
checkCoercion(x1, "logical")
x1 <- c(x1, "TRUE.FALSE", "Has a space")
## Should fail:
checkCoercion(x1, "logical")
x2 <- c(4, 5, 6, 9.2, ".", " ")
## Should fail
checkCoercion(x2, "logical")
x3 <- factor(c("bob", "emily", "bob", "jane", "N/A", " ", NA, "NA"))
checkCoercion(x3, "ordered")
checkCoercion(x3, "integer")
## Should fail:
checkCoercion(x3, "logical")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.