Change the grid lines' LineWidth

How can I change the grid lines' LineWidth??

[Oleg Komarov]

No way to control it separately from the axes.

[Rafi]

I want to change only the horizontal and vertical central line, how do you do it?

Answer 1

[Jan]

You can disable the grid and draw the lines manually using the positions of the ticks.

[owr]

Done this myself as well - not pretty but it does the trick. If performance becomes an issue it may help if you use lower level graph primitives like "line"

[G A]

is it possible to change length of ticks with TickLength and use them as grids?

[Oleg Komarov]

You'll get black straight lines.

Answer 2

[Toshia M]

There is a new feature in R2023a for changing the grid line width. For more information, see this solution: https://www.mathworks.com/matlabcentral/answers/157863-change-grid-line-width

Answer 3

[Andre B.]

You can use 'GridAlpha' (initially set to 0.15). It has a similar effect as changing the LineWidth.

Answer 4

[Jürgen Stein]

set(gca,'LineWidth',LineWidth)

...will set both the axes outline and grid line width.