Clear Filters
Clear Filters

How to 'divide' the x-axis based on y-values?

3 views (last 30 days)
Here's a sample equation plot:
x = linspace(0,100);
y = @(x) log(x);
plot(x,y(x),'-','LineWidth',2);
And I am attaching three pictures which represent what I would like to have. I want to 'divide' and 'categorize' the x-axis based on certain ranges of y values. Is there a way I can accomplish one or all three of the tasks outlined in attached picture?
Thank you

Accepted Answer

Konstantinos Sofos
Konstantinos Sofos on 27 Feb 2016
Edited: Konstantinos Sofos on 28 Feb 2016
Hi,
There are really many and nice ways to take the desire output...here just one quick solution with some patches
x = linspace(0,100);
y = @(x) log(x);
plot(x,y(x),'--','LineWidth',2);
x_lim = get(gca,'xlim')
y_lim = get(gca,'ylim')
hold on
patch([0 0 exp(3.75) exp(3.75)],[y_lim(1) y_lim(2) y_lim(2) y_lim(1) ],[1 0.5 0.2],'FaceAlpha',0.2)
text(mean([0 exp(3.75)]),mean(y_lim),'y < 3.75','rotation',90,'FontSize',14,'HorizontalAlignment','center')
patch([exp(3.75) exp(3.75) exp(4) exp(4)],[y_lim(1) y_lim(2) y_lim(2) y_lim(1) ],[1 1 0.2],'FaceAlpha',0.2)
text(mean([exp(3.75) exp(4)]),mean(y_lim),'3.75 < y < 4.00','rotation',90,'FontSize',14,'HorizontalAlignment','center')
patch([exp(4) exp(4) x_lim(2) x_lim(2)],[y_lim(1) y_lim(2) y_lim(2) y_lim(1) ],[0.5 1 0.7],'FaceAlpha',0.2)
text(mean([exp(4) x_lim(2)]),mean(y_lim),'y > 4.00','rotation',90,'FontSize',14,'HorizontalAlignment','center')
grid minor
ylabel('ln(x)')
  1 Comment
A
A on 27 Feb 2016
This is amazing. I am definitely going to try this out.
Is there any other way you can think of?
Thanks so much!

Sign in to comment.

More Answers (0)

Categories

Find more on Graphics Object Properties in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!