MATLAB: How to change thickness and font of all axes in a subplot

allaxeschangefontlineMATLABpropertiessize;subplotwidth

I'm plotting a step response of a single input , multi output system using step command. The result is a n*1 subplot. How do I change the font or line thickness of all the subplots together. When I use the following command:

set(gca,'FontName','Arial','FontSize',12,'FontWeight','Bold', 'LineWidth', 2);

it only change the last subplot.

Best Answer

The reason for the behavior that only the last axes is modified is because in your command, you are using 'gca' to set the properties. Using 'gca' gets hold of only the current axes, which in this case would be the last axes that was plotted on the figure.

In order to workaround the issue, you would need to get all the axes handles in the figure. To achieve this, you may use'findobj' function as findobj(gcf,'type','axes'). Please refer to the following code snippet:

subplot(211); plot(1:10);
subplot(212); plot(randi(10,1,10));
set(findobj(gcf,'type','axes'),'FontName','Arial','FontSize',12,'FontWeight','Bold', 'LineWidth', 2);

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MATLAB: How to make a legend that has both rows and columns

The ability to present a legend in the form of a matrix is added in MATLAB 9.4(R2018a).

You can specify Number of columns by using NumColums property of Legend object.

For details, please refer the documentation.

https://www.mathworks.com/help/matlab/ref/legend.html?lang=en&s_tid=gn_loc_drop#bt6r30y

In R2017b and previous release, it is not available as a built-in feature of MATLAB.

However, there exist several workarounds:

1) Use the GRIDLEGEND function from MATLAB Central:

http://www.mathworks.com/matlabcentral/fileexchange/29248-gridlegend-a-multi-column-format-for-legends

2) Use the COLUMNLEGEND function from MATLAB Central:

http://www.mathworks.com/matlabcentral/fileexchange/27389-columnlegend

3) Use the FLEXLEGEND function from MATLAB Central:

http://www.mathworks.com/matlabcentral/fileexchange/31092-legendflex-a-more-flexible-legend

4) Use the following code:

% Example data
xData = linspace(0,pi);
y1 = sin(xData);
y2 = cos(xData);
y3 = sin(xData.^2);
y4 = cos(xData.^2);
% Plot the first two sets of data
ph1(1) = plot(xData,y3,'-ko','DisplayName','Y3 Legend Text');
hold on
ph1(2) = plot(xData,y4,'-bs','DisplayName','Y4 Legend Text');
% Create the first legend
lh1 = legend(ph1,'Location','NorthOutside','Orientation','horizontal');
lh1_position = get(lh1,'Position');
% Now set any axis properties that you want (Font, Ticks, etc)
fontSize = 16;
xlimits = [0,pi];
ylimits = [-1, 1];
xticks  = [0, pi/2, pi];
yticks  = [-1, 0, 1];
xTickLabels = {'0', 'pi/2', 'pi'};
set(gca,'XLim',xlimits,'YLim',ylimits,'FontSize',fontSize,'XTick',xticks,'YTick',yticks,'xTickLabel',xTickLabels);
% Name the first axis ax1 and create a second axis on top of the first
ax1 = gca;
ax2 = axes('Position',get(ax1,'Position'));
% Plot the second two sets of data on ax2
ph2(1) = plot(xData,y1,'-rd','DisplayName','Y1 Legend Text','Parent',ax2);
hold on
ph2(2) = plot(xData,y2,'-g^','DisplayName','Y2 Legend Text','Parent',ax2);
% Again set any axis properties that you want (Font, Ticks, etc) to make sure that the Legend fonts are the same
set(ax2,'XLim',xlimits,'YLim',ylimits,'FontSize',fontSize,'XTick',xticks,'YTick',yticks);
% Now, link the first axis to the second and make the second invisible
linkaxes([ax1 ax2],'xy');
set(ax2,'Color','none','XTick',[],'YTick',[],'Box','off');
% Now make the second legend just above the first
lh2 = legend(ax2,ph2,'Orientation','horizontal');
lh2_position = lh1_position;
lh2_position(2) = lh1_position(2)+1.25*lh2_position(4);
set(lh2,'Position',lh2_position);

MATLAB: Plot two asexm with different colormaps in the same graph

In Mapping Toolbox, axesm doesn’t create a new axes (it modifies the current axes), so the handles to the first and second call to axesm are the same axes.

The second colormap overwrites the first one.

In order to have two asexm with different colormaps, a new axes needs to be created for the second map axes

For example,

% create the first axis
hAxesJ = axesm('MapProjection','mercator',...
                'Frame','on',... 
                'Grid','on',...
                'GColor','k',...
                'MapLatLimit',[25 75],...
                'MapLonLimit',[-100 20],...
                'ParallelLabel','on',...
                'MeridianLabel','on',...
                'FontSize',10);
colormap(hAxesJ,winter);
% Create a second axes
hAxesS = axes;
% Turn off the decorations, backdrop etc. of the second axes so it doesn't cover the first one
axis(hAxesS,'off')
% Make sure the second axes is current (gca)
axes(hAxesS)
hAxesd = axesm('MapProjection','mercator',...
                'Frame','on',... 
                'Grid','on',...
                'GColor','k',...
                'MapLatLimit',[25 75],...
                'MapLonLimit',[-100 20],...
                'ParallelLabel','on',...
                'MeridianLabel','on',...
                'FontSize',10);
cbS = colorbar(hAxesd,'Location','east');
%set colormap for second axes
colormap(hAxesd,spring);

Best Answer

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MATLAB: How to make a legend that has both rows and columns

MATLAB: Plot two asexm with different colormaps in the same graph

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