Fplot Title

This example shows how to add a title and axis labels to a chart by using the title, xlabel, and ylabel functions. It also shows how to customize the appearance of the axes text by changing the font size.

• Plot Title In R
• Plot Title

• Alright I figured it out. For some reason it wasnt rewriting the title variable from an old run so i just added 'clear title xlabel ylabel' and that seems to have fixed it.
• Why Would fplot(f) and fplot(vpa(f)) Show. Learn more about fplot MATLAB, Symbolic Math Toolbox.
• Fplot (,Name,Value) specifies line properties using one or more Name,Value pair arguments. Use this option with any of the input argument combinations in the previous syntaxes. Name,Value pair settings apply to all the lines plotted. To set options for individual lines, use the objects returned by fplot.

: fplot (fn, limits): fplot (, tol): fplot (, n): fplot (, fmt): x, y = fplot Plot a function fn within the range defined by limits. Fn is a function handle, inline function, or string containing the name of the function to evaluate. The limits of the plot are of the form xlo, xhi or xlo, xhi, ylo, yhi. The next three arguments are all optional and any number of them. Fplot uses adaptive step control to produce a representative graph, concentrating its evaluation in regions where the function's rate of change is the greatest. Examples Plot the hyperbolic tangent function from -2 to 2.

Create Simple Line Plot

Create x as 100 linearly spaced values between $$-2\pi$$ and $$2\pi$$. Create y1 and y2 as sine and cosine values of x. Plot both sets of data.

Add Title

Add a title to the chart by using the title function. To display the Greek symbol $$\pi$$, use the TeX markup, pi.

Add Axis Labels

Add axis labels to the chart by using the xlabel and ylabel functions.

Add Legend

Add a legend to the graph that identifies each data set using the legend function. Specify the legend descriptions in the order that you plot the lines. Optionally, specify the legend location using one of the eight cardinal or intercardinal directions, in this case, 'southwest'.

Change Font Size

Axes objects have properties that you can use to customize the appearance of the axes. For example, the FontSize property controls the font size of the title, labels, and legend.

Access the current Axes object using the gca function. Then use dot notation to set the FontSize property.

Title with Variable Value

Include a variable value in the title text by using the num2str function to convert the value to text. You can use a similar approach to add variable values to axis labels or legend entries.

Add a title with the value of $$\sin (\pi )/2$$.

See Also

legend linspace title xlabel ylabel

Related Topics

After reading the MATLAB plots topic, you will understand how to create plots, and you will know how to use various plot commands in MATLAB.

Plots are useful in providing information in picture view and MATLAB provides the facility for creating a plot using plot command.

plot Command

The plot command in MATLAB help to create two-dimensional plots. The general form of the command is:

where

• x and y both are vectors.
• The table below shows the following line specifiers which are Optional.

Examples

Program (1): To plot the curve for x and y values are given below, in MATLAB.

x=(1,2,3,4); y=(2,4,6,8)

MATLAB VIEW – Program (1):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (1):

Program (2): To plot curve with a line specifiers as a dashed red line for x and y values are given below, in MATLAB.

x = (1,2,3,4); y = (2,4,6,8).

MATLAB VIEW – Program (2):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (2):

In the above plot x vs. y, with a dashed red line.

Multiple graphs using plot command

The example below will show you how to show multiple graphs in the same plot using plot command in MATLAB.

Examples

Program (1): To show curve in same plot for functions f(x) and g(x) is given below in MATLAB.

f(x) = x; g(x) = 2x; 0 ≤ x ≤ 10

MATLAB VIEW – Program (1):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (1):

In the above figure f vs. x and g vs. x, all in the same plot.

hold on and hold off command

The example below will show you how to show multiple graphs in the same plot by using hold on and hold off command in MATLAB.

Plot Title In R

Example

Program (1): To show the curve for functions f(x) and g(x) in the same plot is given below, in MATLAB.

f(x)=x; g(x)=2x; 0≤x≤10

MATLAB VIEW – Program (1):

Create a script file in MATLAB and type the following code –

MATLAB VIEW – Output (1):

MATLAB – Plot formatting Using Commands:

The formatting commands are entered after the plot command. In MATLAB the various formatting commands are:

(1). The xlabel and ylabel commands:

The xlabel command put a label on the x-axis and ylabel command put a label on y-axis of the plot.

The general form of the command is:

(2). The title command:

This command is used to put the title on the plot. The general form of the command is:

(3). The axis command:

This command adds an axis to the plot. The general form of the command is:

(4). The grid command:

This command adds the grid to the plot. The general form of the command is:

Example

Plot Title

Program (1): To plot sine wave having following properties given below, in MATLAB.

f(x) = sin(x); 0 ≤ x ≤ 2π; Properties: Sine wave: axis and grid present, x-axis label “time”, y-axis label “amplitude”, title label” sine wave”.

MATLAB VIEW – Program (1):

Create a script file and type the following code –

MATLAB VIEW – Output (1):