How could i displace the values of X axis under X axis (Y negative) ?

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Star Strider
Star Strider el 13 de Feb. de 2019
Use the equation (or values) for the line, and plot the numbers just as you have plotted them under the circles. If you do not have an equation for the line that gives you the values for it at every ‘x’ value, use the interp1 function to calculate them.
  4 comentarios
mattvanviore
mattvanviore el 15 de Feb. de 2019
this is my script for the plot
plot(ALFAinv,CMacinv,'ok','LineWidth',1)
grid on
xlabel('\alpha [°]')
ylabel('C_M_a_c','Rotation',0)
set(gca,'fontsize',11)
ax=gca;
ax.XAxisLocation='origin';
ax.YAxisLocation='origin';
set(gca,'Ydir','reverse')
ax.YAxis.TickDirectionMode='manual';
ax.YAxis.TickDirection='in';
axis([-6 19 -0.8 0.8])
hold on
plot(ALFAxf,CMacxf,'--b','LineWidth',1)
plot(ALFAxl,CMacxl,'-k','LineWidth',1)
title('POLO X=0.265 Y=0 63A412 Re=3e6','LineWidth',1)
legend ('XFOIL non viscoso','XFOIL ascissa forzata','XFOIL ascissa libera')
hold off
Star Strider
Star Strider el 15 de Feb. de 2019
I don‘t have your data, so I can’t run your script.
I also have no idea what you want to do.
I gave you valid code. If it doesn’t work for you, I need to know the reason. Your posted code — especially without necessary data — gives me no useful information.

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Más respuestas (1)

Yair Altman
Yair Altman el 16 de Feb. de 2019
Editada: Yair Altman el 16 de Feb. de 2019
A peculiarity of AxisLocation='origin' is that the X and Y tick labels automatically switch location (from below the X axis to above-it, and from left of the Y axis to right-of-it, respectively) depending on where the axes origin (0,0) is located. You can easily see this behavior by dragging (panning) the axes up/down and left/right, respectively.
If you want to ensure that the labels appear beneath the X axes, then make the YLimit above the axes larger than the one beneath it. For example:
ax.YLim = [-.80001,.8];
axis([-6 19 -0.80001 0.8]); % alternative

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