Increase width of one specific line coreplot

Question

I have lines going from the bottom of my x-axis all the way up to the graph. But I would like to make one line thicker than the other 5.

majorGridLineStyle.lineWidth = 0.5f;
majorGridLineStyle.lineColor = [[CPTColor lightGrayColor] colorWithAlphaComponent:1];

I have five line tick marks with width of 0.5. I am just trying to make one of those specific lines thicker than the others.

Answer 1

You can use another axis without tick marks to draw a thick line over the grid lines from another axis. Set its orthogonal coordinate to the location of the grid line you want to cover.