how to zoom in on specific overlapped data points and keepin the others ones inside the grid range

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Mini Me
Mini Me 2013-4-18
Hello, I have a set of data I am analyzing and I would like some help if you can. My data consist of two columns but my X column is only one point and my Y colunm is about 50 points. So when I plot it of course it's just just diff points along the Y axis versus one single point on the x axis.
Now those points are really closed to each other and what I would like to do is to label each point to their actual Channel name. But so far I tried to use the text() function an it gives me an error saying that my x and y value should be the same. I'm not sure which way to do this anymore. Keep in mind that I have the names of each data points in a file also. Can you help? Keep in mind using one x value and 50 Y values. Lets say I fix it and now the names are on top of each other. Is there a way I am space them out without affecting the location of the points.
Thanks for your help in advance!

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回答（1 个）

Jonathan Epperl
Jonathan Epperl 2013-4-19
Okay, either you're not explaining well, or the solution is very simple: If the data doesn't have the same dimension, then make it.
Either, you make an array with all the channel names, then use text once:
M = [repmat('Channel ',50,1) num2str((1:50)', '%2d')];
plot(1,1:50,'s');
text(ones(50,1)+.1,1:50,M);
or you use a for-loop:
plot(1,Y,'s');
for ii=1:50
text(1+.1, Y(ii), num2str(ii,'Channel %d'));
end
Does that help?
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Jonathan Epperl
Jonathan Epperl 2013-4-24
So you'd like some kind of magnifying glass? Maybe an inset axis might be what your are looking for: http://www.mathworks.com/matlabcentral/fileexchange/33159-inset2dabsolute
Or you could distort the y-axis, so that the scale in the center is smaller than on the edges.
I have no idea how else you would zoom in without losing the other data points.

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