MATLAB: Does Matlab give an error for axes

axesMATLAB

Did anybody know why does Matlab give an error for axes?

Warning: line XData length (2) and YData length (0) must be equal

Thx, Sven_sight

Best Answer

It's not a warning for the axes, it's a warning for the line and it means exactly what it says! You can't have a line with two xdata and three ydata since they don't line up!

Consider this:

plot(1:10,1:12)

It doesn't work for the same reason.

Related Solutions

MATLAB: Rescale 2nd axis using yyaxis (Right Axis)

The line

ylim=ax.YAxis(2).Limits

aliases the builtin function ylim so that

ylim([0.5*min(h.YData), max(h.YData)])

doesn't work as intended.

Try something like (after a "yyaxis right" command to ensure it is gca)

y2lims=ylim;  % return limits
% do whatever manipulations on those values wanted here
ylim([nulowLim nuUplim])

MATLAB: Does MATLAB give an error on an axes plot when I change with new variable (a22) in the formula?

Hi Sven (nice name, btw)

Replace the one line:

axis([qstart qstop min(a22) max(a22)]);

With the two lines:

disp([qstart qstop min(a22) max(a22)])
axis([qstart qstop min(a22) max(a22)]);

And then re-run your code. I bet that the last thing before it errors will tell you is that your max(a22) is equal to min(a22).

After that you can probably replace it with:

padding = 0.5; % Just some number that gives you a reasonable axis size
axis([qstart qstop [min(a22) max(a22)] + [-1 1]*padding]);

Thanks, Sven.

Best Answer

Related Solutions

MATLAB: Rescale 2nd axis using yyaxis (Right Axis)

MATLAB: Does MATLAB give an error on an axes plot when I change with new variable (a22) in the formula?

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