Simple flow that displays the location and sentiment of tweets on a world map
Demonstration flow for use on IBM Cloud. It should be pasted into editor of a Boilerplate Node-RED Starter container. It uses the pre-installed 'twitter-in' and 'sentiment' nodes along with the 'node-red-contrib-web-worldmap' nodes. These are likely to need to be installed separately using the Manage Palette capability or your preferred approach.
The application displays the location and sentiment of tweets for any topic, user or both at the /worldmap URL directly below the IBM Cloud hostname (i.e. https://example.ibm.host/worldmap).
The flow has been carefully crafted to be as simple as possible, so it is understandable and build-able by non-coders (indeed it was built for an executive audience). It makes no use of JavaScript function nodes.
Users should modify the 'twitter-in' node for any topic they like in the 'for' box. They should also create and paste in a Google API key from here https://developers.google.com/maps/documentation/geocoding/get-api-key into the indicated 'change' node.
Should the user be using free Google and IBM services and want to use the application for a long time, then it may be advisable to restrict the flow using a 'delay' node to send 1 message sent to Google every 35 seconds.
Full details, a build walkthrough and screenshots are in my blog here
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