MATLAB: If this AND that then…

if statementif thentwo variables

How do I say something like if value1 = 1 and value2 = 1 then… I'm trying to say that is something is a color and there is an arrow in a particular location then it will change the WaitSecs(value). This is what I have so far, but I'm not sure if that is saying what I intend it to.

if colour1 = c1
      if tri1 = downtri
       (keyCode(1,100)) == 1;                    %left
      Screen('FillRect',window,[0 0 0])
      Screen('Flip',window)
      WaitSecs(tar);
elseif...

Thanks, you guys make my life WAY easier.

Best Answer

if colour1 == c1 && tri1 == downtri
      (keyCode(1,100)) == 1;  %left
      Screen('FillRect',window,[0 0 0])
      Screen('Flip',window)
      WaitSecs(tar);

Related Solutions

MATLAB: Key presses associated with colour

I have no idea what you are doing by looking at the code as there is too much left out. But from your description, this might give you some ideas. The user is supposed to hit the arrow that is yellow. The count of successes is in the figure title. It's pretty simple, but it was fun to make.

function [] = gui_arrows()
% Associate arrows with keypress...
S.fh = figure('name','Yellow Arrow 0/0',...
              'menubar','none',...
              'numbert','off',...
              'pos',[100 100 300 300]);
S.ax = axes('pos',[0 0 1 1],...
            'visible','off',...
            'handlevis','off');
S.C = {'red';'blue';'green';'yellow'}; 
S.C = S.C(randperm(4));
S.Px = {[30,90];[255,195];...
        [150 150];[150 150]};
S.Py = {[150 150];[150 150];...
        [30,90];[255,195]};
S.A(1) = annotation('arrow','units','pix',...
                    'X',circshift(S.Px{1},[0 rand>.5]),...
                    'Y',S.Py{1},...
                    'headstyle','plain',...
                    'linewidth',2,...
                    'color',S.C{1});   
S.A(2) = annotation('arrow','units','pix',...
                    'X',circshift(S.Px{2},[0 rand>.5]),...
                    'Y',S.Py{2},...
                    'headstyle','plain',...
                    'linewidth',2,...
                    'color',S.C{2}); 
S.A(3) = annotation('arrow','units','pix',...
                    'X',S.Px{3},...
                    'Y',circshift(S.Py{3},[0 rand>.5]),...
                    'headstyle','plain',...
                    'linewidth',2,...
                    'color',S.C{3});
S.A(4) = annotation('arrow','units','pix',...
                    'X',S.Px{4},...
                    'Y',circshift(S.Py{4},[0 rand>.5]),...
                    'headstyle','plain',...
                    'linewidth',2,...
                    'color',S.C{4});  
S.CNT = 0;  
S.TRK = 0;
movegui('center')     
set(S.fh,'windowkeypressfcn',{@fh_wkpfcn})
guidata(S.fh,S)  % Store the structure.
function [] = fh_wkpfcn(varargin)
% Callback for figure windowbuttondownfcn
S = guidata(gcbf);  % Get the structure.
idx = find(strcmp(S.C,'yellow'));
D1 = get(S.A(1),'X');
D2 = get(S.A(2),'X');
D3 = get(S.A(3),'Y');
D4 = get(S.A(4),'Y');
S.TRK = S.TRK + 1;
switch varargin{2}.Key
    case 'uparrow'
        if idx==3 && D3(1)<D3(2)
            S.CNT = S.CNT + 1;
        elseif idx==4 && D4(1)<D4(2)
            S.CNT = S.CNT + 1;
        end
    case 'downarrow'
        if idx==3 && D3(1)>D3(2)
            S.CNT = S.CNT + 1;
        elseif idx==4 && D4(1)>D4(2)
            S.CNT = S.CNT + 1;
        end
    case 'leftarrow'
        if idx==1 && D1(1)>D1(2)
            S.CNT = S.CNT + 1;
        elseif idx==2 && D2(1)>D2(2)
            S.CNT = S.CNT + 1;
        end
    case 'rightarrow'
        if idx==1 && D1(1)<D1(2)
            S.CNT = S.CNT + 1;
        elseif idx==2 && D2(1)<D2(2)
            S.CNT = S.CNT + 1;
        end     
    otherwise     
end
S.C = S.C(randperm(4));
set(S.A(1),'X',circshift(S.Px{1},[0 rand>.5]),...
    'color',S.C{1})
set(S.A(2),'X',circshift(S.Px{2},[0 rand>.5]),...
    'color',S.C{2})
set(S.A(3),'Y',circshift(S.Py{3},[0 rand>.5]),...
    'color',S.C{3})
set(S.A(4),'Y',circshift(S.Py{4},[0 rand>.5]),...
    'color',S.C{4})
set(S.fh,'name',sprintf('Yellow Arrow %i/%i',S.CNT,S.TRK))
guidata(S.fh,S)

MATLAB: Randomization… if not this then that

After your first if, have this instead of the second if:

if tri1 == uptri
  % Triangle 2 can't be an uptriangle.
  random = rand(1);
  if random <(1/3)
    tri2 = downtri 
    b2 = vertbaseq2
  elseif random>=(1/3) && random<(2/3)
    tri2 = righttri 
    b2 = horzbaseq2
  else
    tri2 = lefttri 
    b2 = horzbaseq2
  end
else
  % Triangle 2 can be anything.
  if random <(1/4)
    tri2 = downtri 
    b2 = vertbaseq2
  elseif random>=(1/4) && random<(2/4)
    tri2 = uptri 
    b2 = vertbaseq2
  elseif random>=(2/4) && random<(3/4)
    tri2 = righttri 
    b2 = horzbaseq2
  elseif random>=(3/4) && random<(4/4)
    tri2 = lefttri 
    b2 = horzbaseq2
  end
end

Best Answer

Related Solutions

MATLAB: Key presses associated with colour

MATLAB: Randomization… if not this then that

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