我安装了octave在debian下,用

octave:1> t = 0:0.1:6.3;

octave:2> plot (t,cos(t))

octave:3> sh: line 1: gnuplot: command not found



warning: connection to external plotter (pid = 10146) lost --

warning: please try your plot command(s) again

warning: broken pipe -- some output may be lost



----------------------------------------------------------



octave:3> t = 0:0.1:6.3;

octave:4> plot(cos(t))

sh: line 1: gnuplot: command not found

warning: broken pipe -- some output may be lost

sh: line 1: gnuplot: command not found

warning: broken pipe -- some output may be lost

sh: line 1: gnuplot: command not found

sh: line 1: gnuplot: command not found

warning: broken pipe -- some output may be lost

不能画图,请问这是怎么回事

octave没有内置画图功能，所有相关命令都是调用gnuplot完成的。从错误信息上看，是因为你的机子上没有安装gnuplot，装上就好了。

debian上可以：

apt-get install gunplot

当然前提是机子已经连网。

谢谢,已经可以画图了