gnuplots的问题？？？？？？

zq97

用gnuplots绘图时出现下列信息：
gnuplot: unable to parse 'white'. Using black.

gnuplot: unable to parse 'black'. Using black.

gnuplot: unable to parse 'black'. Using black.

gnuplot: unable to parse 'black'. Using black.

gnuplot: unable to parse 'black'. Using black.

gnuplot: unable to parse 'red'. Using black.

gnuplot: unable to parse 'green'. Using black.

gnuplot: unable to parse 'blue'. Using black.

gnuplot: unable to parse 'magenta'. Using black.

gnuplot: unable to parse 'cyan'. Using black.

gnuplot: unable to parse 'sienna'. Using black.

gnuplot: unable to parse 'orange'. Using black.

gnuplot: unable to parse 'coral'. Using black.
后出现一个全黑的窗口，完全看不见图。