How to test if an object is a simulink.parameter ?
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Alexandre Poisson
on 17 Mar 2023
Commented: Alexandre Poisson
on 19 Mar 2023
Hi,
Short question: How can I test if an object is a simulink parameter ?
Context:
Simulink data dictionaries allows mutliple type.
I'm getting dataEntries, but after than, I need specific function to get the data entries properties, such as value.
What i tried:
1 / I could use listEntry, but unfortunatelly it cannot be saved in a variable (tested with MATLAB R2022B)
myDictionaryObj = Simulink.data.dictionary.open('sldemo_fuelsys_dd_controller.sldd');
>> listEntry(myDictionaryObj,'Class','Simulink.Parameter')
Section Name Status DataSource LastModified LastModifiedBy Class
Design Data hys sldemo_fuelsys_dd_controller.sldd 2013-10-22 10:05 The MathWorks, Inc. Simulink.Parameter
Design Data max_ego sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data max_press sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data max_speed sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data max_throt sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data min_press sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data min_speed sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:11 The MathWorks, Inc. Simulink.Parameter
Design Data min_throt sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data PressEst sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:11 The MathWorks, Inc. Simulink.Parameter
Design Data PressVect sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:09 The MathWorks, Inc. Simulink.Parameter
Design Data PumpCon sldemo_fuelsys_dd_controller.sldd 2013-10-22 10:33 The MathWorks, Inc. Simulink.Parameter
Design Data RampRateKiX sldemo_fuelsys_dd_controller.sldd 2013-10-22 10:05 The MathWorks, Inc. Simulink.Parameter
Design Data RampRateKiY sldemo_fuelsys_dd_controller.sldd 2013-10-22 10:05 The MathWorks, Inc. Simulink.Parameter
Design Data RampRateKiZ sldemo_fuelsys_dd_controller.sldd 2013-10-22 10:33 The MathWorks, Inc. Simulink.Parameter
Design Data SpeedEst sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:11 The MathWorks, Inc. Simulink.Parameter
Design Data SpeedVect sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data ThrotEst sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:11 The MathWorks, Inc. Simulink.Parameter
Design Data ThrotVect sldemo_fuelsys_dd_controller.sldd 2015-12-17 00:10 The MathWorks, Inc. Simulink.Parameter
Design Data zero_thresh sldemo_fuelsys_dd_controller.sldd 2013-10-22 10:05 The MathWorks, Inc. Simulink.Parameter
>> iWillFail = listEntry(myDictionaryObj,'Class','Simulink.Parameter')
Incorrect number or types of inputs or outputs for function 'listEntry'.
I don't know if this is a bug or expected behavior
2/ I wanted to use : 'isa', but it does not allow to test for Simulink parameter
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Accepted Answer
Paul
on 19 Mar 2023
Hi Alexandre
>> myDictionaryObj = Simulink.data.dictionary.open('sldemo_fuelsys_dd_controller.sldd');
>> dDataSectObj = getSection(myDictionaryObj,'Design Data');
>> foundEntries = find(dDataSectObj,'-value','-class','Simulink.Parameter')
>> foundEntries(1)
ans =
Entry with properties:
Name: 'RampRateKiX'
Value: [1×1 Simulink.Parameter]
DataSource: 'sldemo_fuelsys_dd_controller.sldd'
LastModified: '2013-Oct-22 08:05:23.609681'
LastModifiedBy: 'The MathWorks, Inc.'
Status: 'Unchanged'
>> foundEntries(1).getValue
ans =
Parameter with properties:
Value: [128 256 384 512 640]
CoderInfo: [1×1 Simulink.CoderInfo]
Description: ''
DataType: 'auto'
Min: []
Max: []
Unit: ''
Complexity: 'real'
Dimensions: [1 5]
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