The xyerrorbars style is only relevant to 2D data plots. xyerrorbars is like `points`, except that horizontal and vertical error bars are also drawn. At each point (x,y), lines are drawn from (x,y-ydelta) to (x,y+ydelta) and from (x-xdelta,y) to (x+xdelta,y) or from (x,ylow) to (x,yhigh) and from (xlow,y) to (xhigh,y), depending upon the number of data columns provided. A tic mark is placed at the ends of the error bar (unless bars is used—see bars for details). Either 4 or 6 input columns are required.
4 columns: x y xdelta ydelta 6 columns: x y xlow xhigh ylow yhigh
If data are provided in an unsupported mixed form, the using filter on the `plot` command should be used to set up the appropriate form. For example, if the data are of the form (x,y,xdelta,ylow,yhigh), then you can use
plot 'data' using 1:2:($1-$3):($1+$3):4:5 with xyerrorbars
An additional input column (5th or 7th) may be used to provide variable (per-datapoint) color information.