Graphics properties, MATLAB in Engineering

Graphics Properties:

The MATLAB uses the Handle Graphics in all its figures. All figures consist of various objects, each of which is assigned a handle. The object handle is a exclusive real number which is used to refer to the object.

The different plot functions return a handle for the plot object that can then be stored in a variable. The plot function plots a sin function as shown below in a Figure Window and returns a real number that is the object handle. This handle will remain valid as long as the object exists.

1001_Graphics Properties.png

  >> x = -2*pi: 1/5 : 2*pi;

     >> y = sin(x);

     >> hl = plot(x,y)

     hl =

    158.5420

Note that after getting the plot, the Figure Window must not be closed, so that it would make the object handle invalid as the object wouldn't exist anymore! The properties of that object can be exhibited using the get function. This displays properties like the LineStyle, Color, LineWidth, and so forth.

 

>> get(hl)

     Color:  [0 0 1]

   EraseMode:  'normal'

  LineStyle:  '-'

   LineWidth:  0.5000

   Marker:  'none'

   MarkerSize:  6

  MarkerEdgeColor:  'auto'

   MarkerFaceColor:  'none'

   XData:  [1x63 double]

   YData:  [1x63 double]

   ZData:  [1x0 double]

   BeingDeleted:  'off'

  ButtonDownFcn:  []

  Children:  [0x1 double]

  Clipping:  'on'

  CreateFcn:  []

   DeleteFcn:  []

   BusyAction:  'queue'

  HandleVisibility:  'on'

  HitTest:  'on'

   Interruptible:  'on'

   Selected:  'off'

   SelectionHighlight: 'on'

     Tag:  ''

  Type:  'line'

  UIContextMenu:  []

  UserData:  []

  Visible:  'on'

  Parent:  157.5415

   DisplayName:  ''

    XDataMode:  'manual'

  XDataSource:  ''

  YDataSource:  ''

   ZDataSource:  ''

Posted Date: 10/22/2012 2:05:01 AM | Location : United States







Related Discussions:- Graphics properties, Assignment Help, Ask Question on Graphics properties, Get Answer, Expert's Help, Graphics properties Discussions

Write discussion on Graphics properties
Your posts are moderated
Related Questions
Function fieldnames - structure functions: The function fieldnames will return the names of the fields which are contained in the structure variable. >> pack_fields = fiel

Gauss, Gauss-Jordan elimination: For 2 × 2 systems of equations, there are well-defined, easy solution techniques. Though, for the larger systems of equations, finding solutio

Polyhedron - graphics objects: The field polyhedron.vertices is a matrix in which each row presents (x,y,z) points. The field polyhedron.faces defines the faces: for illustrat

Creating the structure Variables: Creating a structure variable can be accomplished by simply storing the values in fields by using assignment statements, or by using the stru


Uses of Function handles: The Function handles can also be generated for functions other than anonymous functions, both built-in & user-defined functions. For illustration, th

Dot Product: The dot or inner product of two vectors a and b is written as a • b and is defined as  In another words, this is like matrix multiplication when multiplyi

Use polyval to evaluate the derivative at xder. This will be the % slope of the tangent line, "a" (general form of a line: y = ax + b). % 4. Calculate the intercept, b, of t

Image Processing: The Images are represented as grids, or matrices, of picture elements (known as pixels). In MATLAB an image usually is represented as a matrix in which each

Displaying the cell arrays: There are several techniques of displaying the cell arrays. The celldisp function shows all elements of the cell array:   >> celldisp(cellro