frodovdr/node-red-nodes
1
0
Fork 0
mirror of https://github.com/node-red/node-red-nodes.git synced 2025-03-01 10:37:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

Added "reduce" option to the Smooth function node (#577)

Browse Source
This commit is contained in:
Ola Tuvesson
2019-09-19 09:11:23 +01:00
committed by Dave Conway-Jones
parent 1f0aa6908c
commit 38feb99072
3 changed files with 97 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
function/smooth/17-smooth.html
View File

@@ -32,6 +32,11 @@
<option value="multi">Different msg.topic as individual streams.</option>
</select>
</div>
<div class="form-row" id="row-input-reduce">
<label for="node-input-reduce"><i class="fa fa-compress"></i> Reduce</label>
<input type="checkbox" id="node-input-reduce" style="display:inline-block; width:20px; vertical-align:baseline;">
only emit one message per most recent N values
</div>
<br/>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
@@ -44,9 +49,8 @@
<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 &alpha; 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>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 &alpha; 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>Enabling the Reduce option causes the node to only emit one message per N values (available for the Max, Min and Mean functions). E.g. if set to Mean over 10 values, there will only be one outgoing message per 10 incoming ones.</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>
@@ -61,7 +65,8 @@
action: {value:"mean"},
count: {value:"10",required:true,validate:RED.validators.number()},
round: {value:""},
mult: {value:"single"}
mult: {value:"single"},
reduce: {value:false}
},
inputs: 1,
outputs: 1,
@@ -87,10 +92,12 @@
if ((a === "high") || ( a === "low" )) {
$("#node-over").html("with a smoothing factor of ");
$("#node-over2").html("");
$("#row-input-reduce").hide();
}
else {
$("#node-over").html("over the most recent ");
$("#node-over2").html(" values");
$("#row-input-reduce").show();
}
});
$("#node-input-action").change();