CODEWITHSUNDEEP
matlabkeyboardkeystroke
Edward M.
Edward M.

Reputation: 221

How to make MATLAB detect keyboard stroke (arrows) and record the data?

I am trying to make MATLAB code which detect left and right arrow keys of keyboard while there is a figure and record the key strokes.

double(get(gcf,'currentcharacter'))

I tried above function but I don't think it is the one I looked for.

Upvotes: 0

Views: 1754

Answers (2)

Mendi Barel
Mendi Barel

Reputation: 3697

Something i wrote in the past for interactive zoom and pan in figures:

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

And in 'KeyPressd.m':

  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')));

Upvotes: 0

Gelliant
Gelliant

Reputation: 1845

You can use ginput

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

Upvotes: 1

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