Hello,
I am looking for an accurate way to measure the surface of agricultural plots with very irregular shapes and less than 1ha.
A potential method is doing polygonations with a GPS or an app on the phone, but it looks like they make 25% error or more when the plots are tiny (100-300 m2).
Do you know of any good alternative I could try?
Thank you very much!
@ Laura, I think the best way is to divide the given irregular shape into small squares of the unit square area . The total number of unit squares falling within the shape determines the total area. You may consider the unit of area in terms of m2, cm2, in2, or ft2 as per your convenience.
ArcGIS has sophisticated built-in tools for this purpose.
https://www.youtube.com/watch?v=aa_0hXlSVJI
Above video could be of help for you
The first question must be why error of the prediction is higher and how could you reduce that error than finding another method. It is a model and model could be improved by improving the parameters you used to predict! The second question why you are interested to such a lower area or a high resolution. I think sometimes it is better to depend with some levels of error on your model. I recommend you to check your model again and again with ground truth. Otherwise it would be garbage in garbage out. Any model will give you an output based on the the input data. Therefore, knowledge of expertise is highly demanded before you run the model. I want to share you what heard from a man of non-soil scientist in a big conference he said " the soil of area A will be finished within 25 years" based on the model.
Thank you, J. C. Tarafdar! I think your solution will work great for our purposes
- Badges
- Science topic
- Similar topics
- Agriculture