Severity of soybean rust estimated by 40 raters on 50 leaves, first without
and then with a standard area diagram (SAD). Raters 1 to 20 used the old SAD
and raters 21 to 40 the new SAD proposed by Franceschi et al. (2020). Use it
with sad_data() and the other sad_* functions.
Format
A data frame with 2000 rows and 6 columns:
- sad
SAD used by the rater in the aided assessment:
"Old"or"New"- rater
Rater identifier (1 to 40)
- leaf
Leaf identifier (1 to 50)
- actual
Actual severity (%) measured by image analysis
- unaided
Severity (%) estimated without the SAD
- aided
Severity (%) estimated with the SAD