I have the following plot:
Plot3D[x^2 + y^2, {x, -1, 1}, {y, -1, 1},
FaceGrids -> {{0, 0, -1}}]
On my computer, Mathematica draws a line each half unit in the x and y directions.
What argument should be passed to FaceGridsStyle option so that the lines would be denser?
Say, every 0.2 units in the x direction and a line every 0.6 units in the y direction.
Couldn't find an answer in the documentation.
