If you want to quickly enable or disable logging for variables and states, select Log Chart Signals...<\/strong> from the Simulation menu.<\/p>\n This will give you a flat list of all the items you can possibly log in your chart.<\/p>\n See this documentation page<\/a> for more ways of configuring Stateflow logging.<\/p>\n Logging Stateflow Data From Command Line<\/strong><\/p>\n I know many of you will ask if it is possible to control Stateflow logging programmatically. For that, you can use the Stateflow API<\/a>.<\/p>\n Let's say I want to log the local variable down_th<\/tt> for the example model sf_car<\/a>.<\/p>\n All you have to do is get a handle to the Stateflow root object, use the find<\/tt> method to search for data or states, and set the logging property to true.<\/p>\n Visualizing logged data<\/strong><\/p>\n Once logging is enabled for data and states, enable Signal Logging<\/a> in the model configuration. At the end of the simulation, a dataset object appears in the MATLAB workspace.<\/p>\n You can easily plot the data using the plot method of the MATLAB timeseries objects inside the dataset:<\/p>\n If you prefer, you can also directly stream the Stateflow data to the Simulation Data Inspector. For that, enable the Record logged workspace data in Simulation Data Inspector<\/a> from the model configuration. At the end of the simulation, the logged data will show up in the Simulation Data Inspector automatically.<\/p>\n Now it's your turn<\/strong><\/p>\n Are you taking advantage of the Stateflow logging? Let us know what you think of this feature in the comments below.<\/p>\n","protected":false},"excerpt":{"rendered":" Today I want to describe a feature that is super useful, but not known enough: Logging states activity and data in Stateflow.![\"Enabling](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/LogChartSignals.png\")
<\/p>\n![\"Enabling](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/SF_signalLogging.png\")
<\/p>\n![\"Logging](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/sf_car.png\")
<\/p>\n![\"Logging](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/logging_API.png\")
<\/p>\n![\"Logged](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/statefowDataset.png\")
<\/p>\n![\"Plot](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/plotStateflow.png\")
<\/p>\n![\"Stateflow](\"https:\/\/blogs.mathworks.com\/images\/simulink\/2017Q2\/StateflowSDI.png\")
<\/p>\n<\/div>\n
\nLogging Stateflow Data
\nIf you want to quickly enable or disable logging... read more >><\/a><\/p>\n","protected":false},"author":41,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[33,56],"tags":[215,321,320,501,455],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts\/6685"}],"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=6685"}],"version-history":[{"count":12,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts\/6685\/revisions"}],"predecessor-version":[{"id":6701,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/posts\/6685\/revisions\/6701"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/media?parent=6685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/categories?post=6685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/simulink\/wp-json\/wp\/v2\/tags?post=6685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}