plot0 returns an a plot of a specific size without any symbols.
plot0( x = c(-1, 1), y = NULL, fill = NULL, text = NULL, grid.col = NULL, grid.lwd = 1, grid.lty = 1, ... )
| x | the x coordinates of points in the plot or a matrix of coordinates.  | 
    
|---|---|
| y | the y coordinates of points in the plot.  | 
    
| fill | The color to be used to fill the plot area.  | 
    
| text | A character string or a object to be coerced as character string that will be displayed in the center of the plot region.  | 
    
| grid.col | color of the grid's lines. The default value is   | 
    
| grid.lwd | line width of the grid's lines.  | 
    
| grid.lty | line type of the grid's lines.  | 
    
| ... | further graphical parameters from   | 
    
# Example 1 plot0()