{"id":1622,"date":"2013-01-17T23:48:33","date_gmt":"2013-01-18T04:48:33","guid":{"rendered":"https:\/\/blogs.mathworks.com\/seth\/?p=1622"},"modified":"2013-01-17T23:48:33","modified_gmt":"2013-01-18T04:48:33","slug":"which-callback-should-i-use","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/simulink\/2013\/01\/17\/which-callback-should-i-use\/","title":{"rendered":"Which callback should I use?"},"content":{"rendered":"

This week's post has been triggered by question recently posted on this blog regarding Masking<\/a> and Variant Subsystems<\/a>.<\/p>\r\n\r\n

If you look at this exchange<\/a> I had with Xiaojun Yang, you will see that it ends up with the common question:<\/p>\r\n\r\n

Which callback function is appropriate choice if it\u2019s such a case?<\/em><\/p>\r\n\r\n

Which callback should I use?<\/strong><\/p>\r\n\r\n

I have to admit, in Simulink there are many callbacks available and it is not always obvious which one should be used for a specific task.\r\n\r\n

As you probably know, you have model callbacks<\/a> and block callbacks<\/a>.<\/p>\r\n\r\n

For masked subsystems, you typically have two types of callbacks. For each parameter, you have a dialog callback:<\/p>\r\n\r\n

\"Dialog<\/a><\/p>\r\n\r\n

and you have initialization commands:<\/p>\r\n\r\n

\"Mask<\/p>\r\n\r\n

Even though they can sometime be interchanged, those two types of callback are intended for different use cases and using the wrong one can lead to unexpected behavior.<\/p>\r\n\r\n

Best Practices for Masking<\/strong><\/p>\r\n\r\n

In R2012b, if you search the documentation for \"masking examples\", you will notice that the first result is:<\/p>\r\n\r\n

\"Masking<\/p>\r\n\r\n

In the Best Practices for Masking<\/a> page, there are detailed examples showing how to achieve common masking tasks:<\/p>\r\n\r\n

\"Masking<\/p>\r\n\r\n

In your MATLAB installation, each of these links open a model with annotations and detailed comments in each callback to give you the starting point to develop your own masks.<\/p>\r\n\r\n

\"Masking<\/a><\/p>\r\n\r\n

Now it's your turn<\/strong><\/p>\r\n\r\n

Give a look at the examples included in Best Practices for Masking<\/a> and let us know if there are additional examples you would like to see by leaving a comment here<\/a><\/p>\r\n \r\n\r\n\r\n\r\n\r\n","protected":false},"excerpt":{"rendered":"

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This week's post has been triggered by question recently posted on this blog regarding Masking and Variant Subsystems.\r\n\r\nIf you look at this exchange I had with Xiaojun Yang, you will see that it... read more >><\/a><\/p>","protected":false},"author":41,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[47,16],"tags":[306,305],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts\/1622"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/comments?post=1622"}],"version-history":[{"count":28,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts\/1622\/revisions"}],"predecessor-version":[{"id":1831,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts\/1622\/revisions\/1831"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/media?parent=1622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/categories?post=1622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/tags?post=1622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}