MATLAB: Any suggestions for this code

coordinatesinput

I'm trying to prompt the user for coordinates in the following matter, but it is not working. Any advice would be great. Thank you all for your time in advance.

[x1, y1] = input('Please enter the first coordinates in this form [# #]: ');

[x2, y2] = input('Please enter the second coordinates in this form [# #]: ');

[x3, y3] = input('Please enter the third coordinates in this form [# #]: ');

Best Answer

 tmp = input('Please enter the first coordinates in this form [# #]: ');
 x1=tmp(1);
 y1=tmp(2);

and so on...

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MATLAB: I have a problem with the nested function.

Multiple functions way:

x1=input('Enter the x coordinate of the first point ');
y1=input('Enter the y coordinate of the first point ');
x2=input('Enter the x coordinate of the second point ');
y2=input('Enter the y coordinate of the second point ');
x3=input('Enter the x coordinate of the third point ');
y3=input('Enter the y coordinate of the third point ');
[a,b,c]=dist(x1,x2,x3,y1,y2,y3)                         %first function call
s=(a+b+c)/3;
area=calcarea(a,b,c,s)                                  %second function call
fprintf('The area of the triangle is %.2f\n',area) 
function [a,b,c]=dist(x1,x2,x3,y1,y2,y3)   
a=sqrt((x1-x2)^2 + (y1-y2)^2);
b=sqrt((x1-x3)^2 + (y1-y3)^2);
c=sqrt((x2-x3)^2 + (y2-y3)^2);
end
function area=calcarea(a,b,c,s)
area=sqrt(s*(s-a)*(s-b)*(s-c));
end

nested function way:

x1=input('Enter the x coordinate of the first point ');
y1=input('Enter the y coordinate of the first point ');
x2=input('Enter the x coordinate of the second point ');
y2=input('Enter the y coordinate of the second point ');
x3=input('Enter the x coordinate of the third point ');
y3=input('Enter the y coordinate of the third point ');
area=calcarea(x1,x2,x3,y1,y2,y3)                        %parent function call
fprintf('The area of the triangle is %.2f\n',area) 
 function [area]=calcarea(x1,x2,x3,y1,y2,y3)     %parent function
 [a,b,c]=dist(x1,x2,x3,y1,y2,y3) 
 s=(a+b+c)/3;
 area=sqrt(s*(s-a)*(s-b)*(s-c));
 function [a,b,c]=dist(x1,x2,x3,y1,y2,y3)       %nested function
 a=sqrt((x1-x2)^2 + (y1-y2)^2);
 b=sqrt((x1-x3)^2 + (y1-y3)^2);
 c=sqrt((x2-x3)^2 + (y2-y3)^2);
 end
 end

MATLAB: Suggestions about GUI development

Saving past data and repopulating it everytime you open the GUI is relatively simple. I am not so sure that I understand what you are asking about the .exe file. A simple way to save past info in GUI's is to write your data code in the function that initiates the GUI opening. You can do this by calling another function from that opening function and sending with it the array you are editing everyday and saving it to a localized file on your computer(probably excel). Everytime you enter a value it will be saved in that file and everytime you open the GUI that file will be opened and populate your matlab array. Hope this made sense.

Look more into opening excel files in matlab here : https://www.mathworks.com/help/matlab/ref/xlsread.html

Best Answer

Related Solutions

MATLAB: I have a problem with the nested function.

MATLAB: Suggestions about GUI development

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