addaxis

Add multiple y-axes to plots. zoomable with zoom modification.

Description

Adds multiple axes to plots using addaxis.m. Automatically adjusts axes to accomodate as many axes as you want.

Add more plots to any added axes with addaxisplot.m

Add y-labels to any of the axes with addaxislabels.m

All plots zoom together. A small modification to the zoom function allows all of the added axes to update with zoom.

zoom modifications for R11.1 and R14SP2 are included.

Usage is almost exactly like the plot command, see the help for addaxis.m for examples.

Acknowledgements

This file inspired Addaxes.M V1.1 (Sep 2009).

• MATLAB release: MATLAB 5.3.1 (R11.1)

[Tobias]

Great function!
For those of you who can not figure out how to make the zooming and panning working, here is a solution:

1. Open the addaxis.m and find these lines: "% plot in new axis to get the automatically generated ylimits
hplt = plot(varargin{:});"

2. Add the following code after "hplt = plot(varargin{:});" :
h_new = zoom;
set(h_new,'ActionPostCallback',@postcallbackzoom);
set(h_new,'ActionPreCallback',@precallbackzoom);
set(h_new,'Enable','on');
set(h_new,'Enable','off');
h_new=pan;
set(h_new,'ActionPostCallback',@postcallbackpan);
set(h_new,'ActionPreCallback',@precallbackpan);
set(h_new,'Enable','on');
set(h_new,'Enable','off');

3. Goto the end of 'addaxis.m' and add the followong code:

function precallbackzoom(obj,evd)
old(1:2) = get(evd.Axes,'YLim');
old(3) = evd.Axes;
ax = findall(obj,'type','axes');
ax = ax(ax~=evd.Axes);
leg = findall(obj,'Tag','legend');
if(~isempty(leg))
ax = ax(ax~=findall(obj,'Tag','legend'));
end
for i=1:length(ax)
old(i+1,1:2)=get(ax(i),'YLim');
old(i+1,3)=ax(i);
end
setappdata(obj,'OldAxes',old);

function postcallbackzoom(obj,evd)
old = getappdata(obj,'OldAxes');
new(1:2) = get(evd.Axes,'YLim');
d=(old(1,2)-old(1,1));
d1=(new(1)-old(1,1))/d;
d2=(new(2)-old(1,2))/d;
s=size(old);
for i=2:s(1)
d=old(i,2)-old(i,1);
set(old(i,3),'YLim',[ (old(i,1))+d*d1 , (old(i,2))+d*d2]);
end
function postcallbackpan(obj,evd)
set(obj,'WindowButtonMotionFcn','');

function precallbackpan(obj,evd)
ax = findall(obj,'type','axes');
ax = ax(ax~=evd.Axes);
leg = findall(obj,'Tag','legend');
if(~isempty(leg))
ax = ax(ax~=findall(obj,'Tag','legend'));
end
OldY=[get(gca,'YLim'),ax'];
set(obj,'WindowButtonMotionFcn',{@CallbackPan,obj});
setappdata(obj,'OldY',OldY);

function CallbackPan(hObject, eventdata, handles)
old = getappdata(hObject,'OldY');
new(1:2) = get(gca,'YLim');
d=(new(1)-old(1))/(new(2)-new(1));
for i=3:length(old)
d1 = get(old(i),'YLim');
d1_= d1(2)-d1(1);
set(old(i),'YLim',d1+d*d1_);
end
old(1:2)=new;
setappdata(hObject,'OldY',old);

4. That's it. Save your addaxis.m and enjoy zooming and panning. By the way you don't have the use the new zoom-functions (zoom modifications for R11.1 and R14SP2) provided with this function.
Tested on Matlab 2012b.

[martijn]

GREAT!

but does somebody have the solution to the zoomproblem. The readme does not apply to me, since I use Matlab 2012.

If you know the solution, can you mail me? or drop it here? [e-mail]

[LONG SHEN]

 

[Flo]

Erik:http://www.mathworks.com/matlabcentral/newsreader/view_thread/292235, thank you erik!

Do anybody know how to zoom in AND scale the additional axis and not only the main axis?

[Flo]

Thank you! Does anybody know, how to get the right data cursor values? I only get the y-values from the main-y-axis and not from the "addaxis" :(

[eparks]

Thanks! Can anyone tell me how to make it so that all additonal axes are added to the same side (opposite the original)?

[Ralph]

 

[Chad Greene]

 

[Matthias Pospiech]

I want to use this tool because plotyy does not provide the option to show the axis ticks onl on one side.

But the second axis on the right side is separated from the actual plot area which looks wrong. And there are not handles, so I have no clue how to modify the style.
And there is no documentation neither in the readme nor in the files so that I can only guess what I have to call.

Any help is welcome to get around all the plotyy problem.

I was linked here from this question:
http://mathworks.com/matlabcentral/answers/28436-plotyy-with-sync-yaxis-tics-on-both-sides

[P K]

I figured it out!
I just used the following commands:
AX=findall(0,'type','axes');
set(AX(2),'fontsize',16,'fontweight','bold')

[P K]

Great tool!

I had problems with plotyy and this function solved them all. There is only one thing which I would like to know: how can I change the line thickness, font size, font style on the new axis?
Would appreciate any help.

[David D. Chen]

Works well without zoom. Can someone comment on how to fix the zoom issue? I'm also not sure how to fix the zoom issue with linkzoom. Would appreciate any help.

[hoan]

Great tool!

[Gaurav Gupta]

 

[Erik]

I've answered my own question:

http://www.mathworks.com/matlabcentral/newsreader/view_thread/292235

Best,

Erik

[Erik]

Great tool!

Unfortunately I could not get Data Cursor to find the value of a plot at a given point. I tried using Ben's modifications in conjunction with suggestions from http://www.mathworks.com/support/solutions/en/data/1-31Q3HK/?solution=1-31Q3HK to no avail.

Does anyone have a workable solution?

[Ben]

Great tool! I'm surprised matlab doesn't handle this better natively (the way gnuplot does).

If you need to change linestyles, ytics, etc, just change the declaration of addaxis to:

function [hplts,h_ax] = addaxis(varargin)

This give you back the handle to the plot (as if you called h=plot(...)) and the axes (h=axes(...)) yourself.

The only outstanding issue I have is positioning a legend outside the plot...one solution might be to put all the new y-axes on the right (instead of alternating left/right), and then legend Location NorthEast, but I haven't tried that yet.

[John]

 

[John]

Great Tool. Would be great if you could update the zoom functionality to more recent versions of MATLAB.

[Ibrahim M]

Great work!

Ibrahim M.

[Andres]

A good multiple y-axis tool - it could be a bit more customizable. Use linkzoom ( http://www.mathworks.com/matlabcentral/fileexchange/21414 ) to avoid the zoom modification, or use Carlos Adrian's derivative (not tested yet).

[Ian]

Hi, good tool.
Is it possible to make some of the additional axis use a log scale?

[R. J]

Hi. This is a great tool, I used it to create something more specific for my needs, so thank you for the ideas. I'm wondering if anyone has figured out a fix to a legend..I can only add to the legend the number of entries on the left side.

[Amir Abbas Zadpoor]

Well done! Thanks a lot

[R Meyer]

I think this is a very useful tool, but I guess I have some problems, because there are always error messages when I am using the zoom function. Perhaps it is because I am using the new version of MatLab but I do not know exactly because I have got the software since only a few days. Perhaps anybody can help me.

[Wang Ding]

a very useful tool! Thanks a lot

[Xianyu Zhao]

Very useful, thanks a lot

[Ian Howat]

Great tool. Much^10 easier to use than plotyy. I agree with fabiano that a good modification would be to add multiple horizontal labels.

[beckali abdel]

useful, thanks

[Patrick Celka]

Best to fix the plotyy bug

[fabiano busdraghi]

nice tool. it is too shame that you can not add x axis, that is what i'm looking for
fabiano

[A Pohlmann]

I wanted to plot several curves and then add another one on a second y-axis. Tried plotyy and a few different tools and finally used this. Works ok if you don't mess with the orignal axis after adding the second. However, like some other tools it affects the size of subplots with some of them being slimmer or flatter, at random, which means you need to resize manually. Also the second axis is shifted slightly upwards. Other tools seemed to have similar problems, so I wonder whether that has some other cause (thus 4*). Using Matlab 7.0.4 on X11. Nevertheless I get usable graphs.

[Neelu D]

Best among the posted on the website for adding secondary axis or zooming.

[Andrey Loginov]

A nice tool thank you,
It is better not redefine splot.m which is used for plotting freq and time resp of system SYS,
Just rename to say splot__.m and use

[Johannes Korsawe]

A really superb tool. Just what i was about to write on my own. Thank you!

I would just allow the user to choose the color of subsequent plots to the same additional axis (addaxisplot line 43) and not force them to be the same color as the axis.