Carry out action dependent on specified values for input to lie between

Question

Jacque 2012-3-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/33332-carry-out-action-dependent-on-specified-values-for-input-to-lie-between

Sorry for the long title but I'm not too sure how I'd go about defining this in a small sentence.

I want a set of values to be chosen if the input falls within a range of values e.g. input = 135 so should fall between 90 < input <= 180.

Here's the code I'm using:

Alpha = input('Specify angle of rotation (0 - 360): ');
if Alpha > 360
    Alpha = input('Specify angle of rotation (0 - 360: ');
elseif Alpha <= 0
    Alpha = input('Specify angle of rotation (0 - 360: ');
elseif isempty(Alpha)
    Alpha = input('Specify angle of rotation (0 - 360: ');
end
Alpha = Alpha*(pi/180)
a = sqrt(((cos(Alpha)^2))*((cos(Theta)^-2)-1))
b = sqrt((a^2)*((((cos(Alpha))^-2)-1)))
if 0 <= Alpha <= (90*(pi/180))
    ZA = (2*(((cos(Theta))^-2)-1))^0.5;
    ZB = a;
    ZC = 0 ;
    ZD = b;
end
if (90*(pi/180)) < Alpha <= (180*(pi/180))
    ZA = b;
    ZB = (2*(((cos(Theta))^-2)-1))^0.5;
    ZC = a;
    ZD = 0;
end
if (180*(pi/180)) < Alpha <= (270*(pi/180))
    ZA = 0;     
    ZB = b; 
    ZC = (2*(((cos(Theta))^-2)-1))^0.5;
    ZD = a;
end
if (270*(pi/180)) < Alpha < (360*(pi/180))
    ZA = a;    
    ZB = 0; 
    ZC = b;
    ZD = (2*(((cos(Theta))^-2)-1))^0.5;
end