<script type="text/x-red" data-template-name="smooth"> <div class="form-row"> <label for="node-input-property"><i class="fa fa-ellipsis-h"></i> <span data-i18n="node-red:common.label.property"></span></label> <input type="text" id="node-input-property" style="width:70%;"/> </div> <div class="form-row"> <label for="node-input-action"><i class="fa fa-bolt"></i> Action</label> <select id="node-input-action" style="width:60%; margin-right:5px;"> <option value="max">Return the maximum value seen</option> <option value="min">Return the minimum value seen</option> <option value="mean">Return the mean value</option> <option value="sd">Return the standard deviation</option> <option value="low">Perform low pass filter</option> <option value="high">Perform high pass filter</option> </select> </div> <div class="form-row"> <label for="node-input-count"> </label> <span id="node-over">over the most recent </span> <input type="text" id="node-input-count" placeholder="10" style="width:50px;"/> <span id="node-over2"> values</span> </div> <div class="form-row"> <label for="node-input-round">(optionally)</label> round to <input type="text" id="node-input-round" placeholder="ignore" style="width:50px;"/> decimal places </div> <div class="form-row"> <label for="node-input-mult">Treat</label> <select id="node-input-mult" style="width:60%; margin-right:5px;"> <option value="single">All msg as one stream.</option> <option value="multi">Different msg.topic as individual streams.</option> </select> </div> <br/> <div class="form-row"> <label for="node-input-name"><i class="fa fa-tag"></i> Name</label> <input type="text" id="node-input-name" placeholder="Name"> </div> <div class="form-tips" id="node-tip">Tip: This node ONLY works with numbers.</div> </script> <script type="text/x-red" data-help-name="smooth"> <p>A simple node to provide various functions across several previous values, including max, min, mean, high and low pass filters.</p> <p>Messages arriving with different <code>msg.topic</code> can be treated as separate streams if so configured.</p> <p>Max, Min and Mean work over a specified number of previous values.</p> <p>The High and Low pass filters use a smoothing factor. The higher the number the more the smoothing. E.g. a value of 10 is similar to an α of 0.1. It is analagous to an RC time constant - but there is no time component to this as the time is based on events arriving.</p> <p>If <code>msg.reset</code> is received (with any value), all the counters and intermediate values are reset to an initial state.</p> <p><b>Note:</b> This only operates on <b>numbers</b>. Anything else will try to be made into a number and rejected if that fails.</p> </script> <script type="text/javascript"> RED.nodes.registerType('smooth', { color: "#E2D96E", category: 'function', defaults: { name: {value:""}, property: {value:"payload",required:true}, action: {value:"mean"}, count: {value:"10",required:true,validate:RED.validators.number()}, round: {value:""}, mult: {value:"single"} }, inputs: 1, outputs: 1, icon: "smooth.png", label: function() { return this.name || "smooth"; }, labelStyle: function() { return this.name ? "node_label_italic" : ""; }, oneditprepare: function() { if (this.property === undefined) { $("#node-input-property").val("payload"); } $("#node-input-property").typedInput({default:'msg',types:['msg']}); $("#node-input-count").spinner({ min:1 }); $("#node-input-round").spinner({ }); $("#node-input-action").change( function() { var a = $("#node-input-action").val(); if ((a === "high") || ( a === "low" )) { $("#node-over").html("with a smoothing factor of "); $("#node-over2").html(""); } else { $("#node-over").html("over the most recent "); $("#node-over2").html(" values"); } }); $("#node-input-action").change(); if ($("#node-input-round").val() === "true") { $("#node-input-round").val(0); } } }); </script>