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Filtering array of custom objects

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Timo Kuchheuser
Timo Kuchheuser 2018-11-25
编辑： Sebastian Tilders 2022-7-23
Hey!
I was wondering if it is possible to implement the filtering of arrays as describes here: Find Array Elements That Meet a Condition for an array holding objects of a custom class.
I have a class with the following property
properties (Access = public)
stages (1,:) EnvelopeStage
end
An EnvelopeStage object has the following properties
properties (GetAccess = public, SetAccess = public)
name string
duration double {mustBeFinite, mustBeNonnegative, mustBeLessThanOrEqual(duration,1)} = 0
target_level double {mustBeFinite, mustBeNonnegative, mustBeLessThanOrEqual(target_level,1)} = 0
end
What would be the smartes way (besides iterating over the array) to filter by name?
Is there a way to implement or use a function that yields the elemtens with code like this:
stages(stages.name == 'foo');
Thank you very much
Tim

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Honglei Chen
Honglei Chen 2018-11-26
You can probably try
idx = arrayfun(@(x)strcmp(x.name,'foo'),stages);
stages(idx);
HTH
  2 个评论
Timo Kuchheuser
Timo Kuchheuser 2018-11-26
That worked like a charm!
Thank you very much!
Sebastian Tilders
Sebastian Tilders 2022-7-23
编辑：Sebastian Tilders 2022-7-23
This does not work, as it does not return indexes. It return strcmp results. stages(idx == 1) works for me.

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