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SigmaPlot Properties

Access singular-value plot properties

Since R2024b

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SigmaPlot properties control the appearance and behavior of singular-value plots created using sigmaplot. By changing property values, you can modify certain aspects of the plot.

sp = sigmaplot(sys);
sp.SigmaPeakResponse.Visible = "on";

For more information, see Customize Linear Analysis Plots at Command Line.

Response

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Model responses, specified as a SigmaResponse object or an array of such objects. Use this property to modify the dynamic system model or appearance for each response in the plot. Each SigmaResponse object has the following fields.

Source data for the response, specified as a structure with the following fields.

Dynamic system, specified as a SISO or MIMO dynamic system model or array of dynamic system models.

When you initially create a plot, Model matches the value you specify for sys.

Frequencies at which to compute the response, specified as one of the following:

  • Cell array of the form {wmin,wmax} — Compute the response at frequencies in the range from wmin to wmax.

  • Vector of frequencies — Compute the response at each specified frequency. For example, use logspace to generate a row vector with logarithmically spaced frequency values. The vector w can contain both positive and negative frequencies.

  • [] — Automatically select frequencies based on system dynamics.

Specify frequencies in units of rad/TimeUnit, where TimeUnit is the TimeUnit property of the model.

When you initially create a plot:

  • FrequencySpec matches the value you specify for the w argument.

  • If you do not specify w, FrequencySpec is empty and frequencies are selected based on the system dynamics.

Type of singular values to plot, specified as one of the following values.

  • 0 — Plot singular values of H, which is the frequency response of Model.

  • 1 — Plot modified singular values of the frequency response H-1, where H is the frequency response of sys.

  • 2 — Plot modified singular values of the frequency response I+H.

  • 3 — Plot modified singular values of the frequency response I+H-1.

When you initially create a plot:

  • SingularValueType matches the value you specify for the type argument.

  • If you do not specify type, SingularValueType is 0.

Dependencies

You can specify type as 1, 2, or 3 only when Model has the same number of inputs and outputs.

Response name, specified as a string or character vector and stored as a string.

Response visibility, specified as one of the following logical on/off values:

  • "on", 1, or true — Display the response in the plot.

  • "off", 0, or false — Do not display the response in the plot.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Option to list response in legend, specified as one of the following logical on/off values:

  • "on", 1, or true — List the response in the legend.

  • "off", 0, or false — Do not list the response in the legend.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Marker style, specified as one of the following values.

MarkerDescription
"none"No marker
"o"Circle
"+"Plus sign
"*"Asterisk
"."Point
"x"Cross
"_"Horizontal line
"|"Vertical line
"s"Square
"d"Diamond
"^"Upward-pointing triangle
"v"Downward-pointing triangle
">"Right-pointing triangle
"<"Left-pointing triangle
"p"Pentagram
"h"Hexagram

Plot color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Line style, specified as one of the following values.

Line StyleDescription
"-"Solid line
"--"Dashed line
":"Dotted line
"-."Dash-dotted line

Marker size, specified as a positive scalar.

Line width, specified as a positive scalar.

Response characteristics to display in the plot, specified as a CharacteristicsManager object with the following property.

Visibility of peak response in plot, specified as a CharacteristicOption object with the following property.

Peak response visibility, specified as one of the following logical on/off values:

  • "on", 1, or true — Display the peak response.

  • "off", 0, or false — Do not display the peak response.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Units and Scaling

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Frequency units, specified as one of the following values:

  • "Hz"

  • "rad/s"

  • "rpm"

  • "kHz"

  • "MHz"

  • "GHz"

  • "rad/nanosecond"

  • "rad/microsecond"

  • "rad/millisecond"

  • "rad/minute"

  • "rad/hour"

  • "rad/day"

  • "rad/week"

  • "rad/month"

  • "rad/year"

  • "cycles/nanosecond"

  • "cycles/microsecond"

  • "cycles/millisecond"

  • "cycles/hour"

  • "cycles/day"

  • "cycles/week"

  • "cycles/month"

  • "cycles/year"

Dependencies

By default, the response uses the frequency units of the plotted linear system. You can override the default units by specifying toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Frequency scale, specified as either "log" or "linear".

Dependencies

The default frequency scale depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Magnitude units, specified as one of the following:

  • "dB" — Decibels

  • "abs" — Absolute value

Dependencies

  • If MagnitudeScale is "log" when you set MagnitudeUnit to "dB", the software automatically changes MagnitudeScale to "linear".

  • The default magnitude units depend on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Magnitude scale, specified as either "log" or "linear".

Dependencies

Title and Axis Labels

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Title text and style, specified as an AxesLabel object with the following properties.

Text value, specified as a string or character vector and stored as a string.

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Text interpreter, specified as one of the following:

  • "tex" — Interpret characters using a subset of TeX markup.

  • "latex" — Interpret characters using LaTeX markup.

  • "none" — Display literal characters.

Subtitle text and style, specified as an AxesLabel object with the following properties.

Text value, specified as a string or character vector and stored as a string.

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Text interpreter, specified as one of the following:

  • "tex" — Interpret characters using a subset of TeX markup.

  • "latex" — Interpret characters using LaTeX markup.

  • "none" — Display literal characters.

X-axis label text and style, specified as an AxesLabel object with the following fields.

Text value, specified as a string or character vector and stored as a string.

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Text interpreter, specified as one of the following:

  • "tex" — Interpret characters using a subset of TeX markup.

  • "latex" — Interpret characters using LaTeX markup.

  • "none" — Display literal characters.

Y-axis label text and style, specified as an AxesLabel object with the following fields.

Text value, specified as a string or character vector and stored as a string.

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Text interpreter, specified as one of the following:

  • "tex" — Interpret characters using a subset of TeX markup.

  • "latex" — Interpret characters using LaTeX markup.

  • "none" — Display literal characters.

Axes Limits and Style

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X-axis limits, specified as a two-element vector of the form [min,max] or a cell array of such vectors, where min is the minimum axis limit and max is the maximum axis limit.

Dependencies

  • When an entry in the XLimitsMode property is "auto", the corresponding x-axis limits are configured automatically based on the system dynamics.

  • XLimits contains limits only for visible inputs. When an entry in InputVisible is off, then the corresponding limits are removed from XLimits.

X-axis limit selection mode, specified as one of the following strings or a cell array of such strings.

  • "auto" — Enable automatic limit selection, which is based on the total span of the plotted data.

  • "manual" — Manually specify the axis limits by setting the XLimits property.

Dependencies

  • If you modify an entry in the XLimits property, the corresponding XLimitsMode value changes to "manual".

  • XLimitsMode contains selection modes only for visible inputs. When an entry in InputVisible is off, then the corresponding selection modes are removed from XLimitsMode.

Y-axis limits, specified as a two-element vector of the form [min,max] or a cell array of such vectors, where min is the minimum axis limit and max is the maximum axis limit.

Dependencies

  • When an entry in the YLimits property is "auto", the corresponding y-axis limits are configured automatically based on the system dynamics.

  • YLimits contains limits only for visible outputs. When an entry in OutputVisible is off, then the corresponding limits are removed from YLimits.

Y-axis limit selection mode, specified as one of the following values:

  • "auto" — Enable automatic limit selection, which is based on the total span of the plotted data.

  • "manual" — Manually specify the axis limits by setting the YLimits property.

Dependencies

  • If you modify an entry in the YLimits property, the corresponding YLimitsMode value changes to "manual".

  • YLimitsMode contains selection modes only for visible inputs. When an entry in OutputVisible is off, then the corresponding selection modes are removed from YLimitsMode.

Axes style, specified as an AxesStyle object with the following properties.

Option to display axes outline, specified as one of the following logical on/off values.

  • "on", 1, or true — Display outline.

  • "off", 0, or false — Hide outline.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Font size for tick labels in point units, specified as positive scalar. One point equals 1/72 inch.

Character thickness for tick labels, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Character slant for tick labels, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Font name for tick labels, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Ruler color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet. The ruler color affects axes lines, tick marks, and tick labels.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Option to display grid, specified as one of the following logical on/off values.

  • "on", 1, or true — Display grid.

  • "off", 0, or false — Hide grid.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Dependencies

The default grid visibility depends on the toolbox preferences. For more information, see Specify Toolbox Preferences for Linear Analysis Plots.

Grid color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. The following table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color NameRGB TripletHexadecimal Color Code

"red" or "r"

[1 0 0]#FF0000

"green" or "g"

[0 1 0]#00FF00

"blue" or "b"

[0 0 1]#0000FF

"cyan" or "c"

[0 1 1]#00FFFF

"magenta" or "m"

[1 0 1]#FF00FF

"yellow" or "y"

[1 1 0]#FFFF00

"black" or "k"

[0 0 0]#000000

"white" or "w"

[1 1 1]#FFFFFF

Grid line width, specified as a positive scalar.

Legend

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Legend axes selection mode, specified as one of the following values:

  • "auto" — Show the legend in the northeast visible axes.

  • "manual" — Show the legend in the axes indicated by the LegendAxes property.

Legend axes, specified as a two element vector of integers indicating the row and column of the axes in which to display the legend.

Dependencies

When LegendAxesMode is "auto", LegendAxes contains the row and column of the northeast visible axis.

Option to display the legend, specified as one of the following logical on/off values:

  • "on", 1, or true — Display the legend.

  • "off", 0, or false — Hide the legend.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Legend location within the axes, specified as one of the following values:

  • "northeast" — Top-right corner

  • "northwest" — Top-left corner

  • "southeast" — Bottom-left corner

  • "southwest" — Bottom-right corner

  • "north" — Top

  • "south" — Bottom

  • "east" — Right side

  • "west" — Left side

  • "best" — Location where the least conflict occurs with the plot data at the time that you create the legend. If the plot data changes, you might need to reset the location to "best".

Orientation for stacking legend items, specified as one of the following values:

  • "vertical" — Stack items vertically.

  • "horizontal" — Stack items horizontally.

Chart Layout

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Parent container of the chart, specified as one of the following objects:

  • Figure

  • TiledChartLayout

  • UIFigure

  • UIGridLayout

  • UIPanel

  • UITab

Chart visibility, specified as one of the following logical on/off values:

  • "on", 1, or true — Display the chart.

  • "off", 0, or false — Hide the chart without deleting it. You still can access the properties of chart when it is not visible.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Visibility of the chart object handle in the list of children for its parent, specified as one of the following values:

  • 'on' — Chart object handle is always visible.

  • 'off' — Chart object handle is invisible at all times. This option is useful for preventing unintended changes to the chart by another function. To temporarily hide the handle during the execution of that function, set the HandleVisibility to 'off'.

  • 'callback' — Chart object handle is visible from within callbacks or functions invoked by callbacks, but not from within functions invoked from the command line. This option blocks access to the object in the Command Window, but it allows callback functions to access it.

Position units, specified as a value from the following table. To change the position of the chart in specific units, set the Units property before specifying the Position property. If you specify the Units and Position properties in a single command (using name-value pairs), be sure to specify Units before Position.

UnitsDescription
'normalized'Normalized with respect to the parent container, which is typically the figure, panel, or tab. The lower left corner of the container maps to (0,0), and the upper right corner maps to (1,1).
'inches'Inches
'centimeters'Centimeters
'characters'

Based on the default font of the graphics root object:

  • Character width = width of letter x.

  • Character height = distance between the baselines of two lines of text.

'points'Typography points. One point equals 1/72 inch.
'pixels'

Distances in pixels are independent of your system resolution on Windows® and Macintosh systems:

  • On Windows systems, a pixel is 1/96th of an inch.

  • On Macintosh systems, a pixel is 1/72nd of an inch.

On Linux® systems, the size of a pixel is determined by your system resolution.

Chart size and location, including the margins for decorations such as axis labels and tick marks. Specify this property as a vector of form [left bottom width height]. The values are in the units specified by the Units property.

  • left — Distance from the left edge of the parent container to the outer-left edge of the chart that includes the margins. Typically, the parent container is a figure, panel, or tab.

  • bottom — Distance from the bottom edge of the parent container to the outer-bottom edge of the chart that includes the margins.

  • width — Width of chart, including the margins.

  • height — Height of chart, including the margins.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Chart size and location, excluding the margins for decorations such as axis labels and tick marks. Specify this property as a vector of form [left bottom width height]. The values are in the units specified by the Units property.

  • left — Distance from the left edge of the parent container to the inner-left edge of the chart that excludes the margins. Typically, the parent container is a figure, panel, or tab.

  • bottom — Distance from the bottom edge of the parent container to the inner-bottom edge of the chart that excludes the margins.

  • width — Width of the chart, excluding the margins.

  • height — Height of the chart, excluding the margins.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Chart size and location, excluding the margins for decorations such as axis labels and tick marks. Specify this property as a vector of form [left bottom width height]. This property is equivalent to the InnerPosition property.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Position property to hold constant when adding, removing, or changing decorations, specified as one of the following values:

  • 'outerposition' — The OuterPosition property remains constant when you add, remove, or change decorations such as a title or an axis label. If any positional adjustments are needed, MATLAB® adjusts the InnerPosition property.

  • 'innerposition' — The InnerPosition property remains constant when you add, remove, or change decorations such as a title or an axis label. If any positional adjustments are needed, MATLAB adjusts the OuterPosition property.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Layout options, specified as a TiledChartLayoutOptions object or GridLayoutOptions object. This property specifies options when an instance of your chart is a child of a tiled chart layout or gridded layout. If the instance is not a child of one of these layouts (for example, it is a child of a figure or panel), then this property is empty and has no effect. Otherwise, you can position the chart within the layout by configuring the layout options.

This code places chart object c into the third tile of a tiled chart layout and makes the chart span 2 rows and 3 columns.

c.Layout.Tile = 3;
c.Layout.TileSpan = [2 3];

This code places chart object c into row 2 of a gridded layout and makes the chart span columns 3 and 4.

c.Layout.Row = 2;
c.Layout.Column = [3 4];

Properties to reset when adding a new plot to the chart, specified as one of the following values:

  • 'add' — Add new plots to the existing chart. Do not delete existing plots or reset axes properties before displaying the new plot.

  • 'replace' — Delete existing plots and reset chart properties, except Position and Units, to their default values before displaying the new plot.

Tips

You can also interactively modify response plot properties using the:

Version History

Introduced in R2024b

See Also

Topics