MATLAB: Switch case

case

Hi, I have two methods for calculate xg

The first one is t=1:0.1:10 xg=sin(t)

The second one is t=1:0.2:10 xg=sin (t)/2

I need to write 1, I have the result of the first method and if, I write 2 I have the result of the second method

Please can used the 'Switch case' in this case, if yes can you tell me how Please, i need your help thinks in advance

Best Answer

val = 'first';
switch val
  case 'first'
      xg = sin(0:0.1:10);
  case 'second'
      xg = sin(0:0.2:10);
  otherwise
      doc switch
end

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MATLAB: How to write switch statement

Your syntax for the logical comparison is incorrect. You can't perform 2 comparisons on the same item. You must split this into 2 conditional statements.

% incorrect 
case 3 < val <= 5
    
% Correct
 case 3 < val && val <= 5

The next thing to realize is that a switch statement looks for the case that matches the value you are switching on. This means your switch val has to match an actual value listed in a case statement. You case statements all perform logical comparicsons, so their value is true or false (1 or 0). If val is ever anything other than 1, it can't find a match.

You are looking for the true case, so use switch true.

MATLAB: I keep getting a syntax error with the program??

in the If statement you need to use '==' Your first if statement would be

if x==0 & y==0 
 disp('This point is located at the origin.')

Your entire code

x=input('Enter value for x: '); 
y=input('Enter value for y: '); 
if x==0 & y==0 
    disp('This point is located at the origin.')
elseif x>0 & y==0 
    disp('This point is located on the x-axis.') 
elseif x==0 & y>0 
    disp('This point is located on the y-axis.') 
elseif x>0 & y>0 
    disp('This point is located in the first quadrant.') 
elseif x<0 & y>0 
    disp('This point is located in the second quadrant.') 
elseif x<0 & y<0 
    disp('This point is located in the third quadrant.') 
elseif x>0 & y<0 
    disp('This point is located in the fourth quadrant.') 
end

Best Answer

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MATLAB: How to write switch statement

MATLAB: I keep getting a syntax error with the program??

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