This function modifies parameters of an iObject.
iobj.opt(o=iobj.cur(),...)object whose options are to be set
options to be set
If no parameters (except for the object) are specified, a list of the current parameters is returned (if supported by the object).
The following common parameters are used by most iObjects:
visible visibility flag. The default is TRUE.
layer layer in which the object is placed. Currently the
following layers are supported: 0 - background, 1 - data points, 2 -
selection, 3 - drag boxes. The value -1 has a special meaning by
denoting the topmost layer (which is the default)
col drawing color of the object
fill filling color of the object (where applicable). If set to
NA then no filling is performed.
coord coordinates system to use. 0=graphical coordinates,
1=data space coordinates (default), 2=relative coordinates.
update if set to FALSE then no plot refresh is done
after updating the options. When modifying multiple objects it is
common practice to set update to FALSE for all but the last
updated object. The default is TRUE.