ERROR: Z must be a matrix, not a scalar or vector

Question

David Miller 2016-7-27

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/297305-error-z-must-be-a-matrix-not-a-scalar-or-vector

回答： John D'Errico 2016-7-27

    Grid = linspace(0,2*pi);
    xAxis = (prams.Radius + prams.radius*cos(Grid)).*cos(Grid);
    yAxis = (prams.Radius + prams.radius*cos(Grid)).*sin(Grid);
    zAxis = prams.radius.*sin(Grid);
    surf(xAxis,yAxis,zAxis);
    hold on;

Why is it throwing the error: Z must be a matrix,not a scalar or vector

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

John D'Errico 2016-7-27

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/297305-error-z-must-be-a-matrix-not-a-scalar-or-vector#answer_229881

READ THE ERROR MESSAGE.

What is the variable grid? (Hint, a vector)

What shape are each of the variables xAxis, yAxis, zAxis? Note that the shape of the vector GRID propagates through these computations. So they are vectors also.

Now re-read the error message. Surf requires an array. You passed it a vector. What you really wanted to do, we cannot know.