This example shows how to get properties of a surface plot in MATLAB® and change the property values to customize your plot.
There are several ways to create a surface object in MATLAB. One way is to use
[X,Y,Z] = peaks(50); figure surf(X,Y,Z)
Like all graphics objects, surfaces have properties that you can view and modify. These properties have default values. The display of the surface object,
s, shows the most commonly used surface properties, such as
s = surf(X,Y,Z)
s = Surface with properties: EdgeColor: [0 0 0] LineStyle: '-' FaceColor: 'flat' FaceLighting: 'flat' FaceAlpha: 1 XData: [50x50 double] YData: [50x50 double] ZData: [50x50 double] CData: [50x50 double] Show all properties
To access individual properties, use dot notation syntax
object.PropertyName. For example, return the
FaceColor property of the surface.
ans = 'flat'
Several functions are available to change surface properties. For example, use the
shading function to control the shading of your surface.
shading interp % interpolate the colormap across the surface face
lighting function to adjust the lighting characteristics of your surface. In order for
lighting to have any affect, you must light your surface by creating a light object.
light % create a light lighting gouraud % preferred method for lighting curved surfaces
To change the reflectance property of your surface, use the
material dull % set material to be dull, no specular highlights
To set the transparency for all objects in the current axes, use the
alpha function. This function sets the transparency to any value between 1 and 0, where 1 means fully opaque and 0 means completely transparent.
alpha(0.8) % set transparency to 0.8
To customize the look of your surface, change property values using dot notation.
CData defines the colors for the vertices of the surface. The
FaceColor property indicates how the colors of the surface faces are determined from the vertex colors.
s.CData = hypot(X,Y); % set color data
s.FaceColor = 'interp'; % interpolate to get face colors
AlphaData defines the transparency for each vertex of the surface. The
FaceAlpha property indicates how the transparency of the surface faces are determined from vertex transparency.
s.AlphaData = gradient(Z); % set vertex transparencies s.FaceAlpha = 'interp'; % interpolate to get face transparencies
Graphics objects in MATLAB have many properties. To see all the properties of a surface, use the
AlignVertexCenters: 'off' AlphaData: [50x50 double] AlphaDataMapping: 'scaled' AmbientStrength: 0.3000 Annotation: [1x1 matlab.graphics.eventdata.Annotation] BackFaceLighting: 'reverselit' BeingDeleted: 'off' BusyAction: 'queue' ButtonDownFcn: '' CData: [50x50 double] CDataMapping: 'scaled' CDataMode: 'manual' CDataSource: '' Children: [0x0 GraphicsPlaceholder] Clipping: 'on' CreateFcn: '' DeleteFcn: '' DiffuseStrength: 0.8000 DisplayName: '' EdgeAlpha: 1 EdgeColor: 'none' EdgeLighting: 'none' FaceAlpha: 'interp' FaceColor: 'interp' FaceLighting: 'gouraud' FaceNormals: [49x49x3 double] FaceNormalsMode: 'auto' HandleVisibility: 'on' HitTest: 'on' Interruptible: 'on' LineStyle: '-' LineWidth: 0.5000 Marker: 'none' MarkerEdgeColor: 'auto' MarkerFaceColor: 'none' MarkerSize: 6 MeshStyle: 'both' Parent: [1x1 Axes] PickableParts: 'visible' Selected: 'off' SelectionHighlight: 'on' SpecularColorReflectance: 1 SpecularExponent: 10 SpecularStrength: 0 Tag: '' Type: 'surface' UIContextMenu: [0x0 GraphicsPlaceholder] UserData:  VertexNormals: [50x50x3 double] VertexNormalsMode: 'auto' Visible: 'on' XData: [50x50 double] XDataMode: 'manual' XDataSource: '' YData: [50x50 double] YDataMode: 'manual' YDataSource: '' ZData: [50x50 double] ZDataSource: ''