FieldCurvatureChart

Chart displaying field curvature of optical system

Since R2026a

expand all in page

    Description

    Add-On Required: This feature requires the Optical Design and Simulation Library for Image Processing Toolbox add-on.

    A FieldCurvatureChart object stores information used to display the tangential and sagittal field curvature, or astigmatism, of an optical system. You can change aspects of the display, such as the title, line color, and legend, by modifying properties of the FieldCurvatureChart object.

    Creation

    Create a FieldCurvatureChart object by using the show function with a FieldCurvature object.

    Properties

    expand all

    Field curvature results, specified as a FieldCurvature object.

    Line color, specified as an RGB triplet, a hexadecimal color code, or a color name. You can also specify multiple colors as an M-by-3 numeric matrix where each row is an RGB triplet, or as an M-element string vector where each element is a hexadecimal color code or color name. If you specify a single color, the chart displays all results using the same color. If you specify multiple colors, then M must be equal to the number of wavelengths.

    For a custom color, specify an RGB triplet or a hexadecimal color code.

    • An RGB triplet is a three-element row vector whose elements specify the intensities of the red, green, and blue components of the color. The intensities must be in the range [0,1], for example, [0.4 0.6 0.7].

    • A hexadecimal color code is a string scalar or character vector that starts with a hash symbol (#) followed by three or six hexadecimal digits, which can range from 0 to F. The values are not case sensitive. Therefore, the color codes "#FF8800", "#ff8800", "#F80", and "#f80" are equivalent.

    Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and the hexadecimal color codes.

    Color NameShort NameRGB TripletHexadecimal Color CodeAppearance
    "red""r"[1 0 0]"#FF0000"

    Sample of the color red

    "green""g"[0 1 0]"#00FF00"

    Sample of the color green

    "blue""b"[0 0 1]"#0000FF"

    Sample of the color blue

    "cyan" "c"[0 1 1]"#00FFFF"

    Sample of the color cyan

    "magenta""m"[1 0 1]"#FF00FF"

    Sample of the color magenta

    "yellow""y"[1 1 0]"#FFFF00"

    Sample of the color yellow

    "black""k"[0 0 0]"#000000"

    Sample of the color black

    "white""w"[1 1 1]"#FFFFFF"

    Sample of the color white

    Example: Color="r"

    Example: Color="green"

    Example: Color=[0 0.4470 0.7410]

    Title of chart, specified as a string scalar or character vector.

    Data Types: char | string

    Legend display, specified as "on" or "off", or as numeric or logical 1 (true) or 0 (false). A value of "on" is equivalent to true, and "off" is equivalent to false. The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

    Grid lines to display, specified as one of these options.

    • "major" — The chart displays only major grid lines.

    • "minor" — The chart displays major and minor grid lines.

    • "off" — The chart does not display any grid lines.

    Data Types: char | string

    Parent UI container, specified as a Figure object, Panel object, Tab object, or TiledChartLayout object. By default, the function creates a new Figure object. You can create these UI containers using their respective creation functions.

    Examples

    collapse all

    This example uses:

    Open Live Script

    Create an optical system that contains a double Gauss lens using the helper function createDoubleGauss. The function is attached to this example as a supporting file.

    opsys = createDoubleGauss;

    Compute the field curvature using the fieldCurvature object function. Specify the maximum field angle at which to compute tangential and sagittal field curvature as 15 degrees.

    fc = fieldCurvature(opsys,Wavelengths=[486 586 656],MaxFieldAngle=15);
fc_plot = show(fc)

    Figure contains an object of type optics.chart.fieldcurvaturechart. The chart of type optics.chart.fieldcurvaturechart has title Field Curvature.

    fc_plot = 
  FieldCurvatureChart with properties:

    FieldCurvature: [1×1 optics.result.FieldCurvature]
             Color: [3×3 double]
             Title: "Field Curvature"
            Legend: on
              Grid: "off"
            Parent: [1×1 Figure]

  Show all properties

    Version History

    Introduced in R2026a

    See Also

    |