Using stairs function in MATLAB

Catalog

grammar

explain

Example

Draw single data sequence

Draw multiple data sequences

At the designated x Value position plots a single data sequence

At the designated x Value to plot multiple data sequences

In the only x Draw multiple data sequences at a set of values

Specify the line type 、 Marking symbols and colors

Specify other style options

Specify the coordinate area for the ladder diagram  

Create and modify ladder diagrams

Use the drawing function to create a ladder diagram

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        stairs The function is used to draw a ladder diagram

grammar

stairs(Y)
stairs(X,Y)
stairs(___,LineSpec)
stairs(___,Name,Value)
stairs(ax,___)
h = stairs(___)
[xb,yb] = stairs(___)

explain

        ​stairs(Y)  draw  Y  Ladder diagram of elements in .​

• If Y Vector , be stairs Draw a line .

• If Y For matrix , be stairs Draw a line for each matrix column .

        ​stairs(X,Y)  stay  Y  Zhongyou  X  Draw the element at the specified position . Input  X  and  Y  Must be a vector or matrix of the same size . in addition ,X  It can be a row or column vector ,Y  Must contain  length(X)  Matrix of rows .

​        stairs(___,LineSpec)  Specify the line type 、 Marking symbols and colors . for example ,':*r'  Specify the red dotted line marked with an asterisk . You can use this option in combination with any of the input parameters in the previous syntax .

​        stairs(___,Name,Value)  Use one or more names - Value to modify the ladder diagram for group parameters . for example ,'Marker','o','MarkerSize',8  The specified size is 8 A round mark of pounds .

​        stairs(ax,___)  Draw the graph to  ax  In the specified coordinate area , Instead of the current coordinate area (gca) in . Options  ax  It can precede any combination of input parameters in the previous syntax .

​        h = stairs(___)  Returns one or more  Stair  object . Creating a specific  Stair  After the object , Use  h  Change the properties of the object .

​        [xb,yb] = stairs(___)  Do not create drawings , But return a matrix of equal size  xb  and  yb, In order to make  plot(xb,yb)  Draw a ladder .

Example

Draw single data sequence

         Created in 0 To  4π  In the interval 40 Sinusoidal ladder diagram calculated at uniformly distributed values .

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

figure
stairs(Y)

        Y The length of is automatically determined and generated x Axis scale .

Draw multiple data sequences

         Created in 0 To  4π  In the interval 50 A ladder graph of two cosine functions calculated at values of uniform distribution .

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

figure
stairs(Y)

        Y The number of rows in is automatically determined and generated x Axis scale . 

At the designated x Value position plots a single data sequence

         Created in 0 To  4π  Step diagram of sine wave calculated at values uniformly distributed in the interval . Specify the  x  Value set .

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

figure
stairs(X,Y)

         draw  Y  Item pairs in  X  Figure of the corresponding item in . 

At the designated x Value to plot multiple data sequences

         Created in 0 To  4π  Two cosine wave step diagrams calculated at the values of uniform distribution in the interval . Specify the  x  Value set .

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

figure
stairs(X,Y)

         The first vector input  X  Determine the... Of two data sequences  x  Axis position . 

In the only x Draw multiple data sequences at a set of values

         Create a ladder diagram of two cosine waves calculated at different values . Specifies the unique... Used to plot each data sequence  x  Value set .

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

figure
stairs(X,Y)

         draw  X  Each column pair of  Y  Graph of the corresponding column of .

Specify the line type 、 Marking symbols and colors

         Create a ladder diagram , Set the linetype to dash dot , Set marker symbol to circle , Set the color to red .

X = linspace(0,4*pi,20);
Y = sin(X);

figure
stairs(Y, '-.or')

Specify other style options

         Use Name,Value Create a ladder diagram for the group parameter and set the line weight to 2, Set the marker symbol to diamond , And set the color of the marking surface to cyan .

X = linspace(0,4*pi,20);
Y = sin(X);

figure
stairs(Y,'LineWidth',2,'Marker','d','MarkerFaceColor','c')

Specify the coordinate area for the ladder diagram  

         from R2019b Start , have access to tiledlayout and nexttile Function to display block diagram . call tiledlayout Function to create a 2×1 Block diagram layout . call nexttile Function to create a coordinate area object ax1 and ax2. By specifying the coordinate area object as stairs The first parameter of , Create a separate ladder diagram in the coordinate area . 

x = linspace(0,2*pi);
y1 = 5*sin(x);
y2 = sin(5*x);
tiledlayout(2,1)

% Top plot
ax1 = nexttile;
stairs(ax1,x,y1)

% Bottom plot
ax2 = nexttile;  
stairs(ax2,x,y2)

Create and modify ladder diagrams

         Create a ladder diagram of two data sequences and return two ladder diagram objects .

         Use a small circular marker for the first data sequence . Fill the second sequence with magenta circles . Use dot notation to set properties . 

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

Use the drawing function to create a ladder diagram

         stay 0 and  4π  In the interval 50 Computes two cosine functions at values that are uniformly distributed and uses  plot Create a ladder diagram .

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

        stairs Returns two matrices of equal size xb and yb, But no drawings .

         Use plot It can be done by xb and yb Create a ladder diagram .

figure
plot(xb,yb)