Can I plot rectangles without rescalling axis limits?

Hi,

I try to plot a function and to mark some locations using rectangle. I use

pan xon

to be able to pan, and the y axes rescale automatically (if I don't put the rectangles). How can I tell Matlab to disregard the rectangles when rescalling. I want the rectangles to mark vertical strips along the whole ylim domain (which adjusts as I pan). If this is not possible are there other elements (e.g. line or something else) which don't rescale the axis limits?

Thanks,

Razvan

EDIT: Here is an example:

x = 1:1000;
figure
ax(1) = subplot(211);
% hold on
% for pos = 100:100:1000
%     rectangle('Position', [pos -1000 5 2000], 'FaceColor',[0.5 1 0.5])
% end
plot(x .* sin(x));
xlim([51 100])

ax(2) = subplot(212);
plot(sin(x));
xlim([51 100])

linkaxes(ax, 'x');
pan xon

If the rectangles are not plotted, then I can pan the lower panel and the y axis of the top panel rescales automatically. (By the way if I pan the top panel the y limit adjustments don't work anymore...)

I want to obtain the same effect but with the marked regions visible. Please uncomment the rectangle part and see that now the y axis has the limits fixed by the rectangle dimensions. I want this to rescale according to the function alone (disregarding the rectangles). Is this possible?

[Matt Fig]

Please post complete example code.

Answer 1

[Matt Fig]

You need to post complete example code. I see no problems with this:

ezplot(@sin)
hold on
rectangle('Position', [.2 sin(.2) .1 .1])
pan xon  % No move the axes back and forth...

.

.

.

EDIT In response to the edited question

Does this do what you want:

x = 1:1000;
figure
ax(1) = subplot(211);
hold on

for pos = 100:100:1000
     rectangle('Position', [pos -1000 5 2000], 'Facec',[0.5 1 0.5])
end

xlim([51 100])
ax(3) = axes('pos',get(ax(1),'pos'));
plot(x .* sin(x));
xlim([51 100])
set(ax(1),'xtick',[],'ytick',[])
set(ax(3),'color','none')
ax(2) = subplot(212);
plot(sin(x));
xlim([51 100])
linkaxes(ax, 'x');
pan xon

[Razvan]

Please see the edited question. I put an example now.

[Matt Fig]

Please see my edited answer.

[Razvan]

Thank you. Nice trick! Good to know.