This function is used to centralize the function for writing .csv files across the HADES ecosystem. This function will automatically convert from camelCase in the data.frame to snake_case column names in the resulting .csv file as is the standard described in: https://ohdsi.github.io/Hades/codeStyle.html#Interfacing_between_R_and_SQL
This function may also raise warnings if the data is stored in a format
that will not work with the HADES standard for uploading to a results database.
Specifically file names should be in snake_case format, all column headings
are in snake_case format and where possible the file name should not be plural.
See isFormattedForDatabaseUpload for a helper function to check a
data.frame for rules on the column names
writeCsv(
x,
file,
append = FALSE,
warnOnCaseMismatch = TRUE,
warnOnFileNameCaseMismatch = TRUE,
warnOnUploadRuleViolations = TRUE
)Arguments
- x
A data frame or tibble to write to disk.
- file
The .csv file to write.
- append
When TRUE, append the values of x to an existing file.
- warnOnCaseMismatch
When TRUE, raise a warning if columns in the data.frame are NOT in camelCase format.
- warnOnFileNameCaseMismatch
When TRUE, raise a warning if the file name specified is not in snake_case format.
- warnOnUploadRuleViolations
When TRUE, this function will provide warning messages that may indicate if the data is stored in a format in the .csv that may cause problems when uploading to a database.
Value
Returns the input x invisibly.