Matlab Query: How to align ‘title’ at the botton of the figure when plotting points

MATLABplottitle

My question says everything. I am plotting points on Matlab. But when I set 'title' value, it displays title-name at the top of the image by default. How can I get the title set a the bottom of the image?

Thanks in advance.

Best Answer

If you don't use xlabel you could use that as a quick hack.

If you do use the xlabel, add another line or two by passing a cell array:

figure;
xlabel({'X-label', '', 'Figure title'});

As Amro mentioned in his comments you can make a text anywhere with uicontrol:

x=linspace(0,10*pi);
plot3(x,x.*cos(x),x.*sin(x)); % Plot a 3d spiral
uicontrol('Style','text','Position', [200 20 200 20],'String','My Title')

The positioning is not automatic, so when you resize the figure, the title will move away from the center.

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R – Plot two graphs in same plot in R

lines() or points() will add to the existing graph, but will not create a new window. So you'd need to do

plot(x,y1,type="l",col="red")
lines(x,y2,col="green")

R – Plot a legend outside of the plotting area in base graphics

No one has mentioned using negative inset values for legend. Here is an example, where the legend is to the right of the plot, aligned to the top (using keyword "topright").

# Random data to plot:
A <- data.frame(x=rnorm(100, 20, 2), y=rnorm(100, 20, 2))
B <- data.frame(x=rnorm(100, 21, 1), y=rnorm(100, 21, 1))

# Add extra space to right of plot area; change clipping to figure
par(mar=c(5.1, 4.1, 4.1, 8.1), xpd=TRUE)

# Plot both groups
plot(y ~ x, A, ylim=range(c(A$y, B$y)), xlim=range(c(A$x, B$x)), pch=1,
               main="Scatter plot of two groups")
points(y ~ x, B, pch=3)

# Add legend to top right, outside plot region
legend("topright", inset=c(-0.2,0), legend=c("A","B"), pch=c(1,3), title="Group")

The first value of inset=c(-0.2,0) might need adjusting based on the width of the legend.

legend_right

Best Answer

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R – Plot two graphs in same plot in R

R – Plot a legend outside of the plotting area in base graphics

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