This function requires the bigdata library section to be loaded.
bd.string.column.width(x, columns=NULL)
bdFrame.
NULL, this specifies all of the data set columns.
x is not a
bdFrame.
Each
bdFrame string column is created with a set maximum string width.
Attempting to store a longer string within such a column will generate a warning,
and truncate the string.
New data columns can be created with a specified string column width
by specifying the
string.column.width argument
to
bd.create.columns.
The default string width for newly-created columns is determined
by the
"string.column.width" option to
bd.options.
## Get maximum string width for character columns. Note this is the
## maximum number of characters possible, not the maximum present.
df <- as.bdFrame(state.x77)
df <- bd.create.columns(df, "'Population: ' + asString(Population) +
', Income: ' + asString(Income) + ', Area: ' + asString(Area)",
name="Message",
type="character", string.column.width=60)
bd.string.column.width(df, "Message")
table(nchar(df$Message))