2 yaxis in a tiledlayout

Hello,

I am using tiledlayout to plot the voltages over 3 range of distance (9-10 cm, 19-20cm, 29-30cm), and would like to add a right y axis to plot the corresponding forces in the same ranges. I have acheived to do this, however, I am struggling when linking the axes. linkaxes() is only able to link the right y axes. I would like link all the left axes together and the right axes together. Is it possible to achieve this?

This is my code:

t = tiledlayout(1,3,'TileSpacing','compact');
bgAx = axes(t,'XTick',[],'YTick',[],'Box','off');
bgAx.Layout.TileSpan = [1 3];

%10cm plot
ax1 = axes(t);
yyaxis left
plot(ax1,x,y1,'LineWidth', 2); hold on; %plotting in left y
xline(ax1,10.5,':');
yyaxis right
plot(ax1,x,y2,'LineWidth', 2); hold on; %plotting in right y
ax1.Box = 'off';
ax1.YAxis(2).Visible = 'off';
xlim(ax1,[9.5 10.5])
grid on; grid minor;

%20cm plot
ax2 = axes(t);
ax2.Layout.Tile = 2;
yyaxis left
plot(ax2,x,y1,'LineWidth', 2);hold on;
xline(ax2,19.5,':');
ax2.YAxis(1).Visible = 'off';
yyaxis right
plot(ax2,x,y2,'LineWidth', 2); hold on;
ax2.YAxis(2).Visible = 'off';
ax2.Box = 'off';
xlim(ax2,[19.5 20.5]);
xline(ax2,20.5,':');
xlabel(ax2,'Distance [cm]', 'FontSize', 12)
grid on; grid minor;


%30cm plot
ax3 = axes(t);
ax3.Layout.Tile = 3;
yyaxis left
plot(ax3,x,y1,'LineWidth', 2);hold on;
yyaxis right
ylabel("Pressure [N]");
plot(ax3,x,y2,'LineWidth', 2); hold on;
xline(ax3,29.5,':');
ax3.YAxis(1).Visible = 'off';
ax3.Box = 'off';
xlim(ax3,[29.5 30.5]);

% Link the axes
linkaxes([ax1 ax2 ax3], 'y') %-> link only the right y axis
grid on; grid minor;

Thanks,

Akki.

Answer 1

[Adam Danz]

Check out the examples from the documentation. When using Tiledlayout, axes should either be created using nexttile or after you assign the axes, set the Tile location within the Layout property.

t = tiledlayout(1,3,'TileSpacing','compact');

ax1 = nexttile;

yyaxis left

...

% or

t = tiledlayout(1,3,'TileSpacing','compact');

ax1 = axes(t);

ax1.Layout.Tile = 1;

yyaxis left

...

To link the right y-axes of all 3 tiles, use linkprop

tlo = tiledlayout(1,3); 
ax1 = nexttile; 
yyaxis right 
ax2 = nexttile; 
yyaxis right 
ax3 = nexttile; 
yyaxis right

linkprop([ax1.YAxis(2), ax2.YAxis(2), ax3.YAxis(2)],'Limits');

[Akshayaa Pandiyan]

I see the problem. But, should I assign limits for the y axis to use the 'limits' linkprop?

[Adam Danz]

Are you asking about setting ylim? The last line in my answer links the y-limits for all 3 axes. If ylim is set prior to calling linkprop, then when when linkprop is set, all 3 right-y-axes will have the same limits as the first axes listed in input #1 in linkprop. If ylim changes for any of the axes after setting linkprop then the ylim will change for all right-y-axes.