How can I make user defined x-values with corresponding y-values?

I have two graphs with the same x-axis, years from 2001 to 2010. All I need is to have the user change which years, to and from, that they want to see, and have the graphs display that interval with all of the y-values. Essential it will zoom in on those parts of the graphs.

I can get the user defined x-values but I don't know how to match the y-values here with the graphs.

plot((startyear:endyear),y)

Answer 1

[Star Strider]

I suggest using the axis function.

[Alisha]

That worked great! Thank you! It fixed my x-values but I still have a problem with the y-values. Do you know how to access the y-values from a matrix?

[Image Analyst]

What do you mean "access"? You have the y array, don't you? You must because you plotted it. You can "access" it by specifying indices like

yInRange = y(startYearIndex : endYearIndex)

[Star Strider]

My pleasure!

The y-values will take care of themselves. Use ylim in the axis statement:

axis([xmin  xmax    ylim])

MATLAB automatically calculates xlim and ylim (and zlim if you’re doing 3D plots). If you only want to override one ( xlim in your situation ), you can simply specify the other as the MATLAB-calculated default.

You already have access to the y-values, since you used them to generate your plot.