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Loup Ceres 8000i yield monitor
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gpsdude
Posted 1/2/2019 09:48 (#7214588 - in reply to #7214165)
Subject: RE: Loup Ceres 8000i yield monitor


NE South Dakota Clark, SD
jpucheu - 1/2/2019 06:09

I'm trying to clean yields maps collected with a Loup Ceres 8000i yield monitor, but the map data doesn't make sense. 

This is my raw data, in yield editor.

If you zoom at the data, there is too much variation between near points. 

So I applied the "Smooth velocity" filter in yield editor, with 0.1 value, and an enormous quantity of points gets removed. The monitor is recording points by distance, so I changed it to 2 seconds interval. Same results, one point with "correct" values, the next one it's way up or down, the next normal, and it goes. 


Any ideas? I think that a filter that removes so many points it's not normal.


The Smooth Velocity filter is a speed change filter. .2 is 20% speed difference from point to point. At the 4 mph you are running that would be .8 mph change. I always set mine at .2. One thing you could try is not using that filter. I would trim my min yield first. It looks like your monitor is not working correctly with all the .2 BU points. It reminds me of some swathed barley data that I looked at a couple years ago. It had lodged really bad and was in piles instead of a consistent swath. Setting the STD filter to 4 will remove a lot of false data also, but with the way your data looks, it my remove way more points than you want. If you have any further questions, my contact info is in my profile. I can set up a remote control session to give you a hand.

Edited by gpsdude 1/2/2019 09:55
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