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I am trying to plot a vertical line in matlab. i need to be able to change its thickness and its color. I will be plotting several vertical lines. I need to plot it at a specific point on the x-axis, and it needs to extend vertically in both directions.
Here is what I have so far:
figure; clf; plot(TimeNum,AirTemp1,'k.','LineWidth',1.2); datetick('x','HH:MM:SS'); xlabel('Time'); ylabel('Temp. (deg-C)'); grid on; line([x(668) x(668)],[-3.2 -2.8]); set(gca,'YLim',[-3.2 -2.8])
I dont know why, but my line doesn't show up. Any help would be much appreciated!
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As the error says, you don't have a variable called x and so you can't ask for the 668th element.
You might mean this:
line([668 668],[-3.2 -2.8]);