Setting axes with center in origin (0,0) in plotted variables.

Hey community, I have two variables with x 1 double data. I am to plot these two in a plot, but would like to have the axes to be intersecting each other in origin (0,0). Instead in the axes are shown with intersecting at for example (-2000,-6), my lowest x-value is -1200, lowest y-value is -6. Here it would be great to have the x-axis through y=0, so that differences from y=0 easily can be seen graphically.

How would I do that, is there a command you could use in the script written, to make it move the axes? I have a large script to evaluate a lot of graphs in, so a MATLAB-command would be preferable to a tool in the figure builder.

The (simple) code used is as following:

%%person5 - Puls
hold on
plot(person5_ethanol_ekgpuls_tid,person5_ethanol_ekgpuls,'g.-')
xlabel('Tid/Sek')
ylabel('Blodtryk/MmHg')
title('Forsøgsperson #5 Ethanol Ekg Puls')

Hope that my question is understandable and that it can be done.

Answer 1

[Walter Roberson]

See this blog entry

[Kasper]

Great, just what I needed, especially the sidenote on the commands hline and vline was useful for me. Thanks

[Maty]

Great!!!

Answer 2

[Rini Varghese]

I am sure you are aware of the most straightforward solution to this is now available directly through MATLAB's axes option:

ax = gca;
ax.XAxisLocation = 'origin';
ax.YAxisLocation = 'origin';

[Jason Duvall]

Why are you sure the OP was aware of this? If that was the case, the question probably would not have been posted.

Answer 3

[Arnaud Miege]

Does the axis command do the trick?

Arnaud

[MOHAMMED ALBAYATI]

yes. perfect!

[Muhammad Asif]

The simplest soution to this problem is

set(gca, 'XAxisLocation', 'origin', 'YAxisLocation', 'origin')

Answer 4

[Muhammad Asif]

set(gca, 'XAxisLocation', 'origin', 'YAxisLocation', 'origin')

[Jan Kappen]

Does not work for 3d plots unfortunately :(