Midday Stem Water Potential Stress Classifier
Classify actual midday stem-water-potential evidence using explicitly ordered caller nonpositive MPa bands; indices follow supplied labels not universal stress scale, no irrigation need or vine safety diagnosis.
Description
Stem water potential is a signed measurement requiring a defined protocol.
Stem water potential is a signed measurement requiring a defined protocol. Stress labels and evidence availability should remain explicit.1
Enter nonempty aligned nonpositive MPa readings/binary evidence flags, strictly increasing nonpositive edges and unique labels with one extra final class. Return zero-based class indices and unknown-observation indices.
When to use Midday Stem Water Potential Stress Classifier
Use Midday Stem Water Potential Stress Classifier when you need to evaluate the supplied records under the calculation and evidence rules below. No universal stress scale, irrigation requirement or vine-health diagnosis is provided.
Prepare the measured vineyard records, aligned lists and independently verified local limits or catalog requested. Keep units, crop stages and observation periods consistent.
How to use Midday Stem Water Potential Stress Classifier and understand its results
- Prepare the measured vineyard records, aligned lists and independently verified local limits or catalog requested. Keep units, crop stages and observation periods consistent.
- Enter callerWaterStatusClassLabels, callerWaterPotentialUpperEdgesMpa, observedStemWaterPotentialsMpa, measurementEvidenceFlags using the field table and calculation rules, then run the tool.
- Read callerWaterStatusClassIndices, unknownStemWaterPotentialIndices. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| callerWaterStatusClassLabels | Caller water status class labels | list of string | Required |
| callerWaterPotentialUpperEdgesMpa | Caller water potential upper edges mpa | list of number | Required |
| observedStemWaterPotentialsMpa | Observed stem water potentials mpa | list of number | Required |
| measurementEvidenceFlags | Measurement evidence flags | list of number | Required |
Enter nonempty aligned nonpositive MPa readings/binary evidence flags, strictly increasing nonpositive edges and unique labels with one extra final class. Return zero-based class indices and unknown-observation indices.
class=first inclusive caller edge; evidence missing→−1 Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| callerWaterStatusClassIndices | Caller water status class indices | list of number |
| unknownStemWaterPotentialIndices | Unknown stem water potential indices | list of number |
{
"input": {
"callerWaterStatusClassLabels": [
"lower-tension",
"middle",
"higher-tension"
],
"callerWaterPotentialUpperEdgesMpa": [
-1.2,
-0.8
],
"observedStemWaterPotentialsMpa": [
-0.6,
-1,
-1.4
],
"measurementEvidenceFlags": [
1,
0,
1
]
},
"output": {
"callerWaterStatusClassIndices": [
2,
-1,
0
],
"unknownStemWaterPotentialIndices": [
1
]
}
}Limitations and assumptions
No universal stress scale, irrigation requirement or vine-health diagnosis is provided.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Cool Night Index Freshness Lookup: A cool-night index depends on the selected observation window and missing-data coverage. A band label does not establish wine freshness. For a complementary task, use Young Vine Establishment Water Volume Calculator: Young vines need an event-specific water budget informed by measured demand and effective rainfall. Delivery losses change the supply volume needed to meet that budget.
References
Similar or alternative tools
- Cool Night Index Freshness Lookup
A cool-night index depends on the selected observation window and missing-data coverage. A band label does not establish wine freshness.
- Young Vine Establishment Water Volume Calculator
Young vines need an event-specific water budget informed by measured demand and effective rainfall. Delivery losses change the supply volume needed to meet that budget.