soilmap
===

# What's the meaning of the soil maps?
1. What do the driange classes mean?

2. What's the unit of OM and TWI.
3. OM is organic matter, TWI is [topological wetness index](https://en.wikipedia.org/wiki/Topographic_wetness_index)
- How do these two index affect the plant?
- OM or TWI within a specific range is beneficial and outside that range is harmful?
- What's the unit of these indexs?
- Are these two index related to each other?
4. How can the pipeline help understand the field?
5. Is permeability test also conducted?

# How are these index generated?
## What we observe:
- The shapefile does not match the raster.
- Field 72 has a visual shift while others don't.
(Support figures plz, you can copy figure and paste it on the website directly)
- Complex pattern within a field
## Questions
- To our knowledge, the soil was sampled once or twice within a field, but the pattern in the soil map appear complex
(Support figures plz, you can copy figure and paste it on the website directly)
- Which interpolation method was applied?
- There is a visual shift on Field 72.
- How was the soil sampled? Ground station or something like this?
- Any other explaination of what we observe?

# Other question
- Are void ratio, porosity, degree of saturation measured?