Combiner harvest

Data from a combiner needs to be treated differently compared to data from a potato harvester. First getting the data from a combiner can be really tricky!

Getting the data on a csv format

In my limited experience of working with this data I found the ADAPT framework to be most helpful. If you have any problems getting the data from various binary forms to readable csv files please contact me. I can either give you some free advice on how to get the data into the csv format or do the work for you (for a small fee). With the data on csv format you can load the data into QGIS and it may look something like the left picture bellow. This might be all right for you if your combiner is "slim" and not storing data every 0.1 sec. However, the data (behind the picture to the left) is from a Fendt Ideal with a rapeseed of 35", i.e. the spacing between the "rows" are 10.5 m. The right hand picture is made in Geodatafarm with some interpolation.
CSV data CSV data

How to import the data with GeoDataFarm

To load the data you open the import dialog here:
CSV data
Then you will get the following dialog:
CSV data
  1. Start with finding the text file on your computer (Press "Add input file")
  2. Fill in the date of the harvest (if more than one date you have to pick one)
  3. Select the correct Field and crop in the drop down menus.
  4. Ensure that the program have guessed the correct separator (if not change and the list will update auto magical.
  5. GeoDataFarm will also guess which column in the text file that is the North, East, Yield and Moisture column. Check that these assumptions are correct, if the data doesn't have moisture click "Not available" checkbox.
  6. Select a minimum and maximum yield (in the same unit as the unit given in the text file).
  7. If you want you can also adjust the data and move it to the left (positive x values) or in front (positive y values).
  8. There is also an option to recalculate the data for example if the yield is given in mg/m2 and you want it in kg/ha you can divide the data with 100000 and if the moisture is given in ppm and you want it in % you can divide it with 10000.
  9. Select the width of the harvester (in meter).
  10. Press save data
The storing of data takes some time, you can follow the process up to 40% after that it will appear to be stuck there for some time (a few minutes if data is dense and the field is large).

inbjudan
Axel Hörteborn - geodatafarm[at]gmail.com