Keeping zoning levels after creating the application map

Agriculture General Ag Questions/Troubleshooting
1

In the last step of creating an application map from a vegetation index, you can choose the distribution of the zones. I would like to keep it on “same intervals” but I would like to adjust the endpoints of the lowest and highest zones closer to the histogram. Looks like this:

Bildschirmfoto 2024-12-03 um 19.44.06
Bildschirmfoto 2024-12-03 um 19.44.061126×1242 76.2 KB

However when I create the application it switches back to the default setting and creates different zones (would like to insert a screenshot here, but I can’t since it’s my first post here).

Workaround is to note the intervals of the zones and type them into the custom intervals setting, but thats unnecessarily time consuming.

2

This is what the zones look like after creating the application

Bildschirmfoto 2024-12-03 um 19.44.23
Bildschirmfoto 2024-12-03 um 19.44.231052×1242 191 KB

3

Hi, I just tried reproducing it, and it works on my end.

Are you on PI4Dfields 2.8.3?
You should not change any parameter on the left-hand side menu as it will impact the statistics.

If problem persists please share a screen recording.

Best

4

Hi,
just upgraded to 2.8.4 and it still doesnt work.
Here is a screen recording:

5

THank you for the video, we will investigate and get back to you.

6

Could you please share the PIX4Dfields project with us? Go to Export, project and upload to Community_ZonationProblem - Google Drive

7

Have uploaded the files.
Had the problem also with other similar projects.

8

REceived, thank you. Is there any reason why you set such big cells? I tried and using a normal 5-10 mts cell size the operation works well.

9

Ok, I will try that. I use 36m cells because it’s the tramline width on the farm and the machinery can’t apply product on a smaller scale anyway.

10

I did a bunch of testing:

  1. 8m grid - didnt work
  2. 5m grid - worked
  3. 10m grid - worked
  4. 10m grid with rotation of the grid to match the tramlines - didnt work
  5. 36m grid without rotation - didnt work
  6. 36m grid with rotation - didnt work
  7. 35m grid (multiple of 5) - didnt work
  8. 30m grid (multiple of 10) - didnt work

I really tried my best to pinpoint the problem. Even created a new project from the same images for these tests, because the original project was created on an older version of Pix4DFields. I have no clue why I got it to work as intended on two occasions but couldn’t replicate it. There shouldn’t be a reason that it only works on certain grid sizes.

I’m using a M2 MBA with MacOS 14.5 and Pix4DFields 2.8.4 if that helps

11

Thank you for your extensive testing, we have found a bug and we are working on fixing it.

We hope you can use 10mts grid for now.