如何让MATLAB检测键盘行程(箭头)并记录数据?

时间:2017-04-15 13:13:08

标签: matlab keyboard keystroke

我正在尝试制作MATLAB代码,用于检测键盘的左右箭头键,同时有一个数字并记录击键。

double(get(gcf,'currentcharacter'))

我尝试了以上功能,但我不认为这是我寻找的那个。

2 个答案:

答案 0 :(得分:0)

您可以使用ginput

[~,~,button]=ginput(1);
switch button
    case 30 %up
    case 31 %down
    case 28 %left
    case 29 %right
end

答案 1 :(得分:0)

我过去写过的用于交互式缩放和数字平移的东西:

set(gcf,'WindowKeyPressFcn',{@KeyPressd,mean(xlim)});

在'KeyPressd.m'中:

  function [  ] = KeyPressd( src,evnt,S0 )
    switch evnt.Key
        case 'f'
            set(gca,'XLim', xlim + range(xlim)/100 );
        case 'v'
            set(gca,'XLim', xlim - range(xlim)/100 );
        case 'h'
            set(gca,'YLim', ylim + range(ylim)/100 );
        case 'n'
            set(gca,'YLim', ylim - range(ylim)/100 );
        case 'g'
            set(gca,'ZLim', zlim + range(zlim)/100 );
        case 'b'
            set(gca,'ZLim', zlim - range(zlim)/100 );

        case 'd'
            set(gca,'XLim', xlim - 0.02*(xlim-sum(xlim)/2) );
        case 'c'
            set(gca,'XLim', xlim + 0.02*(xlim-sum(xlim)/2) );
        case 'a'
            set(gca,'YLim', ylim - 0.02*(ylim-sum(ylim)/2) );
        case 'z'
            set(gca,'YLim', ylim +  0.02*(ylim-sum(ylim)/2)  );
        case 's'
            set(gca,'ZLim', 0.98*(zlim) );
        case 'x'
            set(gca,'ZLim', 1/0.98*(zlim) );

    end
    set(gca,'ZTickLabel',sprintf('%1.0f\n',get(gca,'ZTick')));