GNUPlot Manual
GNUPlot Manual
GNUPlot Manual
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36 SET-SHOW gnuplot 4.0 99<br />
36.57.6.19 Xerrorlines The xerrorlines style is only relevant to 2-d data plots. xerrorlines is<br />
like linespoints, except that a horizontal error line is also drawn. At each point (x,y), a line is drawn<br />
from (xlow,y) to (xhigh,y) or from (x-xdelta,y) to (x+xdelta,y), depending on how many data columns<br />
are provided. A tic mark is placed at the ends of the error bar (unless set bars is used — see set bars<br />
(p. 55) for details).<br />
36.57.6.20 Xyerrorlines The xyerrorlines style is only relevant to 2-d data plots. xyerrorlines<br />
is like linespoints, except that horizontal and vertical error bars are also drawn. At each point (x,y),<br />
lines are drawn from (x,y-ydelta) to (x,y+ydelta) and from (x-xdelta,y) to (x+xdelta,y) or from (x,ylow)<br />
to (x,yhigh) and from (xlow,y) to (xhigh,y), depending upon the number of data columns provided. A<br />
tic mark is placed at the ends of the error bar (unless set bars is used — see set bars (p. 55) for<br />
details).<br />
If data are provided in an unsupported mixed form, the using filter on the plot command should be<br />
used to set up the appropriate form. For example, if the data are of the form (x,y,xdelta,ylow,yhigh),<br />
then you can use<br />
plot ’data’ using 1:2:($1-$3):($1+$3):4:5 with xyerrorlines<br />
36.57.6.21 Yerrorlines The yerrorlines (or errorlines) style is only relevant to 2-d data plots.<br />
yerrorlines is like linespoints, except that a vertical error line is also drawn. At each point (x,y), a<br />
line is drawn from (x,y-ydelta) to (x,y+ydelta) or from (x,ylow) to (x,yhigh), depending on how many<br />
data columns are provided. A tic mark is placed at the ends of the error bar (unless set bars is used<br />
— see set bars (p. 55) for details). See also<br />
errorbar demo.<br />
36.58 Surface<br />
The command set surface controls the display of surfaces by splot.<br />
Syntax:<br />
set surface<br />
unset surface<br />
show surface<br />
The surface is drawn with the style specified by with, or else the appropriate style, data or function.<br />
Whenever unset surface is issued, splot will not draw points or lines corresponding to the function<br />
or data file points. Contours may still be drawn on the surface, depending on the set contour option.<br />
unset surface; set contour base is useful for displaying contours on the grid base. See also set<br />
contour (p. 61).<br />
36.59 Terminal<br />
gnuplot supports many different graphics devices. Use set terminal to tell gnuplot what kind of<br />
output to generate. Use set output to redirect that output to a file or device.<br />
Syntax:<br />
set terminal { | push | pop}<br />
show terminal<br />
If is omitted, gnuplot will list the available terminal types. may be<br />
abbreviated.<br />
If both set terminal and set output are used together, it is safest to give set terminal first, because<br />
some terminals set a flag which is needed in some operating systems.<br />
Several terminals have additional options. For example, see dumb (p. 107), iris4d (p. 116), hpljii<br />
(p. 115) or postscript (p. 126). The options used by a previous invocation set term