MATLAB: Switch Case with Strings Help

casestringsswitch

Hello. I am trying to make a program that allows me to input different strings and displays the correct statement based on the string.

This is my code

Planet= input('Planet:');
switch lower(Planet)
    case {'mercury','venus','earth','mars'}
        disp('This is a Inner Planet')
    case {'jupiter','saturn','uranus','neptune'}
        disp('This is a Outer Planet')
    otherwise 
        disp('No such planet exists.')
end

And the error i get is

    >> switchcase
    Planet:Earth
    Error using input
    Undefined function or variable 'Earth'.
    Error in switchcase (line 1)
    Planet= input('Planet:');

How do I correctly program this? Thanks!

Best Answer

Planet= input('Planet:', 's');

Related Solutions

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

MATLAB: How to create a string vector

There are no "string vectors" in Matlab, but you need a "cell string":

Planets = {'Mercury', 'Venus', 'Earth', 'Mars', 'Jupiter', 'Saturn', 'Uranus', 'Neptune'}
Index   = [2, 4, 3];
Chosen  = Planets(Index)

See the "Getting Started" chapters of the documentation, because such a powerful tool as Matlab demands for learning the basics from the documentation.

EDITED: And when you really have a good reason not to use a cell string, but a char-matrix:

Chosen = char(Planets(Index))

Now the strings are padded with zeros. But it is less useful to work with char matrices. Prefer cell strings whenever it is possible.

Best Answer

Related Solutions

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

MATLAB: How to create a string vector

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