linux - Installing Octave on raspberry pi -

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i'm using linux debian on raspberry pi , have installed octave. here octave startup : 

pi@pi1 ~ $ octave octave: x11 display environment variable not set octave: disabling gui features gnu octave, version 4.0.0 copyright (c) 2015 john w. eaton , others. free software; see source code copying conditions. there absolutely no warranty; not merchantability or fitness particular purpose.  details, type 'warranty'.  octave configured "arm-unknown-linux-gnueabihf".  additional information octave available @ http://www.octave.org.  please contribute if find software useful. more information, visit http://www.octave.org/get-involved.html  read http://www.octave.org/bugs.html learn how submit bug reports. information changes previous versions, type 'news'.

when attempt run octave gui such :

plot(3,3) output displayed on command line :

enter image description here

message "octave: disabling gui features" (as part of startup output above) indicates cannot use gui features. version of linux should install on pi , version of octave in order gui plot such :

enter image description here

as can guess first screenshot, using putty windows machine ssh raspberry pi. have enable x11 forwarding in putty (connections->ssh->x11) , install x11 server on windows side xming (http://sourceforge.net/projects/xming/). or easiest way: plug monitor raspberrypi , use gnu/linux , octave directly.


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