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node-red-contrib-calculate

Node-Red (http://nodered.org) nodes for some simple calculations over time or message count.

Install

Run the following command in the root directory of your Node-RED install

npm install node-red-contrib-calculate

Usage

Add the calculate node, select either a time period or a number of messages for release. Select calculation. Done.

Example

[{"id":"4c3a1551.6c254c","type":"random","z":"aff2cc18.0b484","name":"RandomNumber","low":"1","high":"100","inte":"true","property":"payload","x":340,"y":300,"wires":[["6f127280.30cf3c","6867669e.2a13a8","ac90cf81.6e61b","6dd3b70c.dfd938","596e1e94.3205b"]]},{"id":"6f127280.30cf3c","type":"calculate","z":"aff2cc18.0b484","name":"AvgEveryMinute","pauseType":"timed","calculation":"average","timeout":"1","timeoutUnits":"minutes","rate":"10","x":600,"y":180,"wires":[["4fb1838b.89fb2c"]]},{"id":"b32574cf.036708","type":"inject","z":"aff2cc18.0b484","name":"10SecBump","topic":"","payload":"","payloadType":"date","repeat":"10","crontab":"","once":true,"onceDelay":0.1,"x":140,"y":300,"wires":[["4c3a1551.6c254c"]]},{"id":"6867669e.2a13a8","type":"calculate","z":"aff2cc18.0b484","name":"AvgEvery10Msg","pauseType":"rate","calculation":"average","timeout":"10","timeoutUnits":"seconds","rate":"10","x":600,"y":240,"wires":[["4fb1838b.89fb2c"]]},{"id":"ac90cf81.6e61b","type":"calculate","z":"aff2cc18.0b484","name":"MedEveryMinute","pauseType":"timed","calculation":"median","timeout":"1","timeoutUnits":"minutes","rate":"10","x":610,"y":320,"wires":[["4fb1838b.89fb2c"]]},{"id":"6dd3b70c.dfd938","type":"calculate","z":"aff2cc18.0b484","name":"MinEveryMinute","pauseType":"timed","calculation":"min","timeout":"1","timeoutUnits":"minutes","rate":"10","x":600,"y":380,"wires":[["4fb1838b.89fb2c"]]},{"id":"596e1e94.3205b","type":"calculate","z":"aff2cc18.0b484","name":"MaxEveryMinute","pauseType":"timed","calculation":"max","timeout":"1","timeoutUnits":"minutes","rate":"10","x":610,"y":440,"wires":[["4fb1838b.89fb2c"]]},{"id":"4fb1838b.89fb2c","type":"debug","z":"aff2cc18.0b484","name":"Debug","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":870,"y":300,"wires":[]}]

Copy the json above, use Import Clipboard in the menu to add to your instance.

Disclaimer

Use at your own risk, of course, everything will be fine.

Author

Gustaf Ridderstolpe, https://github.com/obrut

Feedback and support

https://groups.google.com/forum/#!forum/node-red or specifically the subject https://groups.google.com/forum/#!topic/node-red/l8lVxeW6AGQ

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Calculation node for node red.

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