How can I create a plot where the graph shifts as the data extends?

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Raffy
Raffy 2013-7-12
Hey all,
I want to make a pressure vs time graph that shifts the graph over to the right as time extends. I don't want to keep the old data in view. How can I do this?
Here's the current code:
hold on
for i=1:21598 %number of data points
ylim([0 60])
plot((data.time(i)-datenum(2013,01,00)),data.P(i));
drawnow;
pause(.1);
end
Right now the code plots the data, but keeps auto sizing the graph as the number of points increase. It also gets really slow as more points are added.

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回答（3 个）

the cyclist
the cyclist 2013-7-12
Does this help?
figure
hold on
dd = data.time - datenum(2013,01,00);
for i=1:21598 %number of data points
plot(dd(i),data.P(i));
ylim([0 60])
drawnow;
pause(.1);
end
chef13
chef13 2013-8-8
I solved plotting and then write:
xlim([i-50,i+50])
Let me know if this helps, Fabrizio.
Iain
Iain 2013-8-8
a = plot(((data.time(1)-datenum(2013,01,00)),data.P(1));
for i = 1:21598
set(a,'Xdata',data.time(i)-datenum(2013,01,00)),'YData',data.P(i))
axis([desired_xmin, desired_xmin+desired_range, 0 60])
drawnow
end

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