stairs - Stairstep graph - MATLAB (2024)

Create a stairstep plot of sine evaluated at 40 equally spaced values between 0 and $$4\pi$$.

X = linspace(0,4*pi,40);Y = sin(X);figurestairs(Y)

The length of Y automatically determines and generates the x-axis scale.

Create a stairstep plot of two cosine functions evaluated at 50 equally spaced values between 0 and $$4\pi$$.

X = linspace(0,4*pi,50)';Y = [0.5*cos(X), 2*cos(X)];figurestairs(Y)

The number of rows in Y automatically determines and generates the x-axis scale.

Create a stairstep plot of a sine wave evaluated at equally spaced values between 0 and $$4\pi$$. Specify the set of x-values for the plot.

X = linspace(0,4*pi,40);Y = sin(X);figurestairs(X,Y)

The entries in Y are plotted against the corresponding entries in X.

Create a stairstep plot of two cosine waves evaluated at equally spaced values between 0 and $$4\pi$$. Specify the set of x-values for the plot.

X = linspace(0,4*pi,50)';Y = [0.5*cos(X), 2*cos(X)];figurestairs(X,Y)

The first vector input, X, determines the x-axis positions for both data series.

Create a stairstep plot of two sine waves evaluated at different values. Specify a unique set of x-values for plotting each data series.

x1 = linspace(0,2*pi)';x2 = linspace(0,pi)';X = [x1,x2];Y = [sin(5*x1),exp(x2).*sin(5*x2)];figurestairs(X,Y)

Each column of X is plotted against the corresponding column of Y.

Create a stairstep plot and set the line style to a dot-dashed line, the marker symbol to circles, and the color to red.

X = linspace(0,4*pi,20);Y = sin(X);figurestairs(Y, '-.or')

Create a stairstep plot and set the line width to 2, the marker symbols to diamonds, and the marker face color to cyan using Name,Value pair arguments.

X = linspace(0,4*pi,20);Y = sin(X);figurestairs(Y,'LineWidth',2,'Marker','d','MarkerFaceColor','c')

Since R2022b

A convenient way to plot data from a table is to pass the table to the stairs function and specify the variables to plot.

Read the first 100 rows and 7 columns of weather.csv as a timetable tbl. Then display the first three rows of the table.

tbl = readtimetable("weather.csv","Range",[1 1 101 7]);head(tbl,3)

 Time WindDirection WindSpeed Humidity Temperature RainInchesPerMinute CumulativeRainfall ____________________ _____________ _________ ________ ___________ ___________________ __________________ 25-Oct-2021 00:00:09 46 1 84 49.2 0 0 25-Oct-2021 00:01:09 45 1.6 84 49.2 0 0 25-Oct-2021 00:02:09 36 2.2 84 49.2 0 0 

Plot the Time variable on the x-axis and the CumulativeRainfall variable on the y-axis. Then use the axis padded command so that the line and the plot box do not overlap.

Return the Stair object as h. Notice that the axis labels match the variable names.

h = stairs(tbl,"Time","CumulativeRainfall");axis padded

Change the color of the line to purple by setting the Color property.

h.Color = [0.5 0 0.8];

Since R2022b

Create vectors x, y1, and y2, and use them to create a table. Plot the y1 and y2 variables against the x variable. Use the axis padded command so that the line and the plot box do not overlap.

Add a legend, and notice that the legend labels match the variable names.

x = linspace(0,6,20);y1 = cos(x);y2 = sin(x);tbl = table(x,y1,y2);stairs(tbl,"x",["y1","y2"]);% Pad x- and y-axes, and add legendaxis paddedlegend

Alternatively, you can omit the x variable and plot the y1 and y2 variables against the row indices of the table.

stairs(tbl,["y1","y2"]);axis paddedlegend

You can display a tiling of plots using the tiledlayout and nexttile functions. Call the tiledlayout function to create a 2-by-1 tiled chart layout. Call the nexttile function to create the axes objects ax1 and ax2. Create separate stairstep plots in the axes by specifying the axes object as the first argument to stairs.

x = linspace(0,2*pi);y1 = 5*sin(x);y2 = sin(5*x);tiledlayout(2,1)% Top plotax1 = nexttile;stairs(ax1,x,y1)% Bottom plotax2 = nexttile; stairs(ax2,x,y2)

Create a stairstep plot of two data series and return the two stair objects.

X = linspace(0,1,30)';Y = [cos(10*X), exp(X).*sin(10*X)];h = stairs(X,Y);

Use small circle markers for the first data series. Use magenta filled circles for the second series. Use dot notation to set properties.

h(1).Marker = 'o';h(1).MarkerSize = 4;h(2).Marker = 'o';h(2).MarkerFaceColor = 'm';

Evaluate two cosine functions at 50 equally spaced values between 0 and $$4\pi$$ and create a stairstep plot using plot.

X = linspace(0,4*pi,50)';Y = [0.5*cos(X), 2*cos(X)];[xb,yb] = stairs(X,Y);

stairs returns two matrices of the same size, xb and yb, but no plot.

Use plot to create the stairstep plot with xb and yb.

figureplot(xb,yb)

h — Stair objects
Stair objects

Stair objects. These are unique identifiers,which you can use to query and modify the properties of a specific Stair objectafter it is created.

xb — x values for use with plot
vector or matrix

x values for use with plot,returned as a vector or matrix. xb contains theappropriate values such that plot(xb,yb) createsthe stairstep graph.

yb — y values for use with plot
vector or matrix

y values for use with plot,returned as a vector or matrix. yb contains theappropriate values such that plot(xb,yb) createsthe stairstep graph.