Custom grid on a plot

Hey all,

I have a plot that represents an error of 7 models in the months. I wanted to split each month's results by a line or grid to determine it more clear. so I used this code:

set( gca, 'YGrid', 'on' );

But as you can see the bars not adjusted between the grids; for example, if you look at Jan results, some of them appear before Jan line and some of them appear after this line. How I can have a line that split each month's results?

Thank you so much.

[Ameer Hamza]

Can you show the commands used to plot this graph? It would be better if you can also attach the variables used to make this bar plot.

Answer 1

[Adam Danz]

If the x-axis is a datetime axis, compute the 15th of each month and use plot(), line(), or xline() to plot vertical lines on the 15th from min(ylim()) to max(ylim()).

If the x-axis is numeric and each month is represented by x = 1,2,...,12, then your x values will be +0.5.

If you get stuck, show us what you've got and I'd be glad to help straighten it out.

Demo

fig = figure();
ax = axes(fig);
xlim([0,13])
ylim([0,10])
hold on
plot((.5:1:12.5).*[1;1], [min(ylim(ax)),max(ylim(ax))], '-k', 'Color', [.5 .5 .5])
ax.XTick = 1:12; 

Or use xline()

fig = figure();
ax = axes(fig);
xlim([0,13])
ylim([0,10])
ax.XTick = 1:12; 
hold on
arrayfun(@(x)xline(x,'-','Color',[.5 .5 .5]), .5:1:12.5)