using matrix to fill a texture

OpenGL OpenGL: Basic Coding
1

I want to fill a texture with the values in a matrix.
using the following command:


glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, WIDTH, 
HEIGHT, 0, GL_RGBA, GL_FLOAT, myMatrix);

Should I create the matrix like myMatrix[height][width][channel]
, or myMatrix[width][height][channel]?