Hi everyone. I'm trying to show the output from two inputs (facial expressions). These two inputs will have different values from 0-100. Thus, I use the switch node to differentiate if it is larger than 80 or not and then use the change node to display the message. The two change nodes will be joine…

Have you checked what the nodes before the join are passing on? Also have you set different topics on the two input messages? I don't know whether you mean it but as you have it the join node will not pass on anything until it has messages from both paths (assuming you have set topics) and then wi…

Still trying to fully understand what you are trying to do. I don't understand why you need the Join node at all. The purpose of the Join node is to combine messages on different paths into one message containing the data from both paths at the same time. If you only care about the last message f…

[image] Colin: I don't understand why you need the Join node at all. This is because someone suggest me to use the join node before and I thought it can used for the separate message. Another reason is I realised when there is two paths in the flow, it will only run the second path when I run…

If you need the data from both paths combined then you need the Join node, but you have to give the messages topics (if they don't already) so you can distinguish the data from the two paths.

I don't need the data from both paths combined. I just want to know which path is running and the message in the respective path will be displayed in the debug. i just afraid the first path of the flow will not be run when I didn't use the join node.

Yes. I don't know whether you need the Change nodes, I don't think you have posted them.

Okay, I'll try it and see whether I need the change node or not.

I assume you are doing something to identify the different paths, in which case yes you do need them.

Display output message

General

Colin 2 March 2019 17:20 15

Do you just need the latest message to come out of either path? If so then just feed them both into a function node.

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Display output message

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