Using Simulink

get_param

Get system and block parameter values.

Syntax

get_param('obj', 'parameter')
get_param( { objects }, 'parameter')
get_param(handle, 'parameter')
get_param('obj', `ObjectParameters')
get_param('obj', 'DialogParameters')

Description

get_param('obj', 'parameter'), where 'obj' is a system or block path name, returns the value of the specified parameter. Case is ignored for parameter names.

get_param( { objects }, 'parameter') accepts a cell array of full path specifiers, enabling you to get the values of a parameter common to all objects specified in the cell array.

get_param(handle, 'parameter') returns the specified parameter of the object whose handle is handle.

get_param('obj', 'ObjectParameters') returns a structure that describes obj's parameters. Each field of the returned structure corresponds to a particular parameter and has the parameter's name. For example, the Name field corresponds to the object's Name parameter. Each parameter field itself contains three fields, Name, Type, and Attributes, that specify the parameter's name (for example, "Gain"), data type (for example, string), and attributes (for example, read-only), respectively.

get_param('obj', 'DialogParameters') returns a cell array containing the names of the dialog parameters of the specified block.

Appendix A, Model and Block Parameters, contains lists of model and block parameters.

Examples

This command returns the value of the Gain parameter for the Inertia block in the Requisite Friction subsystem of the clutch system.

get_param('clutch/Requisite Friction/Inertia','Gain')
ans =
   1/(Iv+Ie)

These commands display the block types of all blocks in the mx+b system (the current system), described in A Sample Masked Subsystem.

blks = find_system(gcs, 'Type', 'block');
listblks = get_param(blks, 'BlockType')

listblks = 

    'SubSystem'
    'Inport'
    'Constant'
    'Gain'
    'Sum'
    'Outport'

This command returns the name of the currently selected block.

get_param(gcb, 'Name')

The following commands gets the attributes of the currently selected block's Name parameter.

p = get_param(gcb, 'ObjectParameters');
a = p.Name.Attributes

ans = 
    'read-write'    'always-save'

The following command gets the dialog parameters of a Sine Wave block.

p = get_param('untitled/Sine Wave', 'DialogParameters')
p = 
    'Amplitude'
    'Frequency'
    'Phase'
    'SampleTime'

See Also

find_system, set_param

gcs

new_system