stat_scalpmap
creates an interpolated surface for an irregular set of
x-y coordinates, as is typically required for a topographical EEG plot. Since
the surface should be approximately round, the function attempts to blank out
portions of the surface that lay outside the area within the electrodes.
geom_head()
adds a headshape to a plot.
geom_mask()
adds a masking ring to smooth the edges of a scalp map
generated by stat_scalpmap()
, to give it a circular appearance.
geom_ears
simply draws a pair of ears attached to the head shape.
geom_channels
adds either points or text labels at channel locations.
This is a convenience function to prevent overplotting when the input data
contains many rows of data.
stat_scalpmap(mapping = NULL, data = NULL, position = "identity", na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, grid_res = 300, interpolate = FALSE, interp_limit = "skirt", method = "biharmonic", ...) geom_head(mapping = NULL, data = NULL, show.legend = NA, na.rm = TRUE, inherit.aes = TRUE, interp_limit = "skirt", r = NULL, ...) geom_mask(mapping = NULL, data = NULL, show.legend = NA, na.rm = FALSE, colour = "white", size = rel(6.5), scale_fac = 1.32, ...) geom_ears(mapping = NULL, data = NULL, show.legend = NA, na.rm = FALSE, ...) geom_channels(mapping = NULL, data = NULL, geom = "point", show.legend = NA, inherit.aes = TRUE, na.rm = TRUE, ...)
mapping | Set of aesthetic mappings created by |
---|---|
data | The data to be displayed in this layer. There are three options: If A A |
position | Position adjustment, either as a string, or the result of a call to a position adjustment function. |
na.rm | If |
show.legend | logical. Should this layer be included in the legends?
|
inherit.aes | If |
grid_res | Resolution of the interpolation grid. (Defaults to 100 points). |
interpolate | If |
interp_limit | Topoplot with a "skirt" or inside the "head". |
method | "biharmonic" or "gam" |
... | Other arguments passed on to |
r | Radius of head |
colour | For |
size | For |
scale_fac | The radius of the ring is determined from the front-most electrode's location by a scaling factor. Defaults to 1.32 * max(y). |
geom | "point" for points or "text" for labels. Default is "point". |