<![CDATA[How to force old not calculated metadata to be calculated ?]]>Hi, I've set some metadata datapoints based on other datapoints, but new metadata is only applied for new datapoints values ...

How can I force mango to recalculate all allready past existing points medatada ?

]]>https://forum.mango-os.com/topic/1397/how-to-force-old-not-calculated-metadata-to-be-calculatedRSS for NodeSat, 11 Apr 2026 14:59:58 GMTThu, 19 Sep 2013 19:57:15 GMT60<![CDATA[Reply to How to force old not calculated metadata to be calculated ? on Fri, 20 Sep 2013 11:46:13 GMT]]>It's good workaround. Thankyou

]]>https://forum.mango-os.com/post/7953https://forum.mango-os.com/post/7953Fri, 20 Sep 2013 11:46:13 GMT<![CDATA[Reply to How to force old not calculated metadata to be calculated ? on Thu, 19 Sep 2013 22:30:28 GMT]]>You could theoretically perform this task with a scripting datasource. Say you have a need to generate the last 1000 points...

  1. Add all the context points to your script as you would your meta point.
  2. Write a big for loop, iterate i :
var dt = new Date();

for(var i = 1; i < 1000; ++i) {
pnt1 = point1.prev(MINUTE, i).firstValue;
...
pntN = pointN.prev(MINUTE, i).firstValue;
result = //do work on the pnt values
meta.set(result, dt.getTime()-(i*60*1000));
}

and you could just have it get generated in one run of the script. Not pretty, but it should work.

Note: This is for numeric points. Binaries and multistates would have a different solution.

]]>https://forum.mango-os.com/post/7949https://forum.mango-os.com/post/7949Thu, 19 Sep 2013 22:30:28 GMT<![CDATA[Reply to How to force old not calculated metadata to be calculated ? on Thu, 19 Sep 2013 20:43:42 GMT]]>OK. Im' afraid ScadaBR fork doesn't have this feature :-(

Thank you !

]]>https://forum.mango-os.com/post/7944https://forum.mango-os.com/post/7944Thu, 19 Sep 2013 20:43:42 GMT<![CDATA[Reply to How to force old not calculated metadata to be calculated ? on Thu, 19 Sep 2013 20:37:55 GMT]]>In line with the data point on its data source page. The table should be:
Name --< Type --> Enable/Disable Button --> Generate History Button --> Edit Point Button

]]>https://forum.mango-os.com/post/7943https://forum.mango-os.com/post/7943Thu, 19 Sep 2013 20:37:55 GMT<![CDATA[Reply to How to force old not calculated metadata to be calculated ? on Thu, 19 Sep 2013 20:34:57 GMT]]>:-( can't find that button. Could you please tell me where exactly is suposed to be ?

]]>https://forum.mango-os.com/post/7942https://forum.mango-os.com/post/7942Thu, 19 Sep 2013 20:34:57 GMT<![CDATA[Reply to How to force old not calculated metadata to be calculated ? on Thu, 19 Sep 2013 20:26:00 GMT]]>There is a generate history button on the metapoint in the datasource page. Unfortunately, this button has some known issues associated with it, and may not work quite as expected.

I believe the best results with that button can be achieved by changing the meta point's update/logging information to be 1. run on context update and 2. log on change.

]]>https://forum.mango-os.com/post/7941https://forum.mango-os.com/post/7941Thu, 19 Sep 2013 20:26:00 GMT