Create a matrix with letters

Question

0 个投票

I would like to know how to create the following matrix:

When there is a list of points with weights (xi, yi, zi are coordinates and mi are weights) I just don't know how to create it with those letters.

4 个评论
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James Tursa 2018-4-6

编辑：James Tursa 2018-4-6

Are you trying to form a symbolic matrix? How is this going to be used downstream in your code?

Lee Cohen 2018-4-6

编辑：James Tursa 2018-4-6

Yeah, I tried to write this code:

n = input('enter n\n');
syms m x y z
 m x y z=ym('m x y z', [n 1]

I am trying to create this matrix using the information from

but I get error.

Answer 1

James Tursa 2018-4-6

0 个投票

Is this what you want:

A = [sym('m%d',[n 1]) sym('x%d',[n 1]) sym('y%d',[n 1]) sym('z%d',[n 1])]

Lee Cohen 2018-4-7

yes, thank you so much!