# i have to create a grid using meshgrid fn. and name it as grid_mat. i'm unable to name it and select points on it for different planets .

조회 수: 1(최근 30일)
Mohd irfan mahir 2021년 9월 12일
답변: darova 2021년 9월 13일
Create a grid using the function meshgrid (x, y), where x and y are coordinates of points in the solar system. Name this grid as grid_mat. By choosing the origin of the grid to be the Earth, specify the coordinates of Moon and Mars. Make sure that the Moon is between Earth and Mars. Assume the orbits of Moon and Mars to be circular.
% this is what i did
x = -8:8 ;
y = -8:8 ;
[X,Y] = meshgrid(x,y) ;
%Y = m.^2 - 4
a = b = 0;
grid_mat = sqrt((X-a).^2 + (Y-b).^2) ; %distance from any point a,b
Z = f(X,Y)
%G = 6.67428*10^(-11) ;
surf(X,Y,Z)

댓글을 달려면 로그인하십시오.

### 답변(1개)

darova 2021년 9월 13일
You can't assing variables that way
a = b = 0;
You can use deal
[a,b] = deal(0);
Or you can separately initiate variables
a = 0;
b = 0;

댓글을 달려면 로그인하십시오.

### 범주

Find more on Earth and Planetary Science in Help Center and File Exchange

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by