a getCoords() function that prompts the user for the x- and y-coordinates for the two endpoints for the five line segments returns it as 5-by-4 matrix of points?

mat-lab function take two numbers return nxn matrix

Rik 2018-4-22

It is not clear what you mean. Write a more detailed description of your input, your desired output, and the code you have tried so far. Have a read here and here. It will greatly improve your chances of getting an answer.

tamara salah 2018-4-22

Write a program that prompts the user for endpoints (x1, y1) and (x2, y2) of five (5) line segments, and calculates the midpoint of each line segment, which is the point (xm, ym).

tamara salah 2018-4-22

编辑：Walter Roberson 2018-4-22

在 MATLAB Online 中打开

function [mid] = findmid (pt1,pt2)
mid = 0.58*(pt1+pt2);
return  
end

function [xpt,ypt] = getcroods (matrix)
n=5; % number of lines
a= inputdlg('enter x coordinates','test',n);
xpt=matrix(a{1});
b= inputdlg('enter y coordinates','test',n);
ypt=matrix(b{1});
return 
end

function [midx,midy] = midpoint(num)
x1 = num(getcroods (x));
x2 = num (getcroods (y));
x3= num(getcroods (c));
x4= num(getcroods (v));
x5 = num(getcroods (b));
y1= num(getcroods (n));
y2= num(getcroods (m));
y3=num(getcroods (k));
y4=num(getcroods (h));
y5 = num(getcroods (g));
midx = findmid (x1,x2,x3,x4,x5);
midy = findmid(y1,y2,y3,y4,y5);
return
end

tamara salah 2018-4-22

those are the function I wrote, but since i'm new, I can't get why it's not working :( and how do I call a function is not working either

Walter Roberson 2018-4-22

在 MATLAB Online 中打开

What is num() ?

What are x, y, c, and so on, that you are passing to getcroods?

Note: inputdlg() returns a cell array of character vectors, so your

a= inputdlg('enter x coordinates','test',n);
xpt=matrix(a{1});

would be attempting to index matrix at a character vector. Indexing at a character vector is permitted and has good uses, but most of the time if you index by a character vector you have probably done something wrong.

mat-lab function take two numbers return nxn matrix

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