4 columns: x y xdelta ydelta 6 columns: x y xlow xhigh ylow yhigh
The box width and height are determined from the x and y errors in the same way as they are for the xyerrorbars style — either from xlow to xhigh and from ylow to yhigh, or from x-xdelta to x+xdelta and from y-ydelta to y+ydelta, depending on how many data columns are provided.
The 6 column form of the command provides a convenient way to plot rectangles with arbitrary x and y bounds.
An additional (5th or 7th) input column may be used to provide variable (per-datapoint) color information (see linecolor (p. ) and rgbcolor variable (p. )).
The interior of the boxes is drawn according to the current fillstyle.
See set style fill (p. ) and boxes (p. ) for details. Alternatively a new fillstyle
may be specified in the plot command.