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2.27 xyerrorbars

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.