+.webvis                Add a new layers to a visualization.
append.param            Used in pv...
collapse                A simplied version of paste.
esse                    Checks whether something exists.
field.exists            Checks whether a field exists in a dataset.
getHead                 Return the head html.
getTail                 Return the tail html.
is.webvis               Checks whether something is a webvis object.
is.webvis.flat          Checks whether something is a webvis...
is.webvis.param         Checks whether something is a webvis...
new.webvis              Create a new webvis object to store each layer
                        of the visualization.
plot.webvis             Simplified plot function for web vis plots.
pv.area                 Add a bar to the visualization.
pv.bar                  Add a bar to the visualization.
pv.chart                Add a chart to the visualization.
pv.data                 Converts R data into Protovis data.
pv.dataset              Add a dataset as a variable to the
                        visualization.
pv.dot                  Add a dot to the visualization.
pv.image                Add an image to the visualization.
pv.label                Add a label to the visualization.
pv.line                 Add a line to the visualization.
pv.mark                 Generic function for all Protovis mark types.
pv.panel                A protovis panal.
pv.param                A protovis mark parameter.
pv.parse                Takes a parameter and a webvis object and
                        parses them.
pv.rule                 Add an rule to the visualization.
pv.scale                A scaling function for protovis.
pv.wedge                Add a wedge to the visualization (for pie
                        charts, etc).
render.webvis           Create the final visualization from the webvis
                        object.
unfold.webvis           Unfolds the visualization tree structure into a
                        flat form.
webvis                  Web graphics for R.
webvis.theme            Creates a theme to be used by a webvis chart
                        object.
webvisToHTML            Convert webvis to HTML.
