Оценка Рыба Вес from Длина (W = aL^b)
Оценка вес from рыба длина and coefficients a and b, then сохранять the результат, диапазон ошибки, сохраненные наборы коэффициентов, and JSON для обмена in one процесс.
The страница makes TL / FL / SL assumptions explicit and supports quick оценкаs, coefficient fitting, and партия processing without leaving the браузер.
What this инструмент covers
Как пользоваться
- Ввести the вид name, длина, единица, and тип длины, then выбрать a справочный пресет or ввести coefficients a and b directly.
- Настроить the процент ошибкиage to обновить the оценкаd вес and диапазон on the right in real время.
- Once the coefficients are settled, сохранить them with a name and примечания or экспортировать them as JSON.
- Используйте the coefficient fitting tab when you do not know the coefficients yet, and the партия tab when you need результатs for many measurements.
Examples
Estimate from a reference preset
Species: Japanese jack mackerel, length: 35 cm, length type: TL, a=0.01096, b=2.97, error: ±20%
Estimated weight: about 421 g, range: about 337 g to 505 g
Solve for a from one sample
Length: 35 cm, observed weight: 432 g, assumed b: 3.0
a = 0.01008, formula: W(g) = 0.01008 × L(cm)^3.0
Batch calculation
Run 25 cm, 30 cm, and 35 cm with the same coefficient set
List estimated weight, low range, and high range for each row and export the table as CSV
Reference presets
Built-in presets are reference values only. Check the source label and length-type assumption in the result panel, and replace them with measured operating values whenever possible.
Словарь
TL / FL / SL
Total length, fork length, and standard length. The coefficient set is only valid when the same length definition is used.
Coefficients a and b
The values that define the relationship W = aL^b. They vary by species, region, season, and stock condition.
Error range
The working range around the estimate. Adjust it to reflect regional differences, maturity, and body condition.
Reference coefficient
A coefficient set taken from published or public reference data. Validate it before operational use.
Fitted coefficient
A coefficient set derived from your own measured fish, either by back-solving or by regression.
Формулаs
Estimated weight W(g) = a × L(cm)^bLower bound = W × (1 - error% / 100)Upper bound = W × (1 + error% / 100)Single-sample solve: a = W / L^bMulti-sample fit: log(W) = log(a) + b log(L)
Вопросы и ответы
Я не знаю a и b. Что делать?
Используйте the coefficient fitting tab. You can solve for a from one measured пример, or fit both a and b from несколько length-weight pairs.
Могу ли я вычислить many рыба at once?
Yes. The партия tab accepts table entry and CSV-style paste, and the результат can be downзагрузитьed as CSV.
Могу ли я переключить between cm and inches, or g and lb?
Yes. Ввод and вывод единицы can be changed at any время. Internal calculations always используйте cm and g.
Why can the оценка be far from the фактический вес?
Рыба of the same вид still vary by region, season, зрелость, fatness, and measurement метод. Используйте the оценка as a диапазон, not as a guaranteed exact значение.
Where are сохранено coefficients stored?
Without login support, сохранено sets live in this браузер's localStorage. Сохранять a JSON экспортировать if you need a portable скопировать.
Какие-либо данные отправляются на сервер?
No. Вычисление, сохранить, and JSON generation all stay inside the браузер.
Важные примечания
- This оценка is only a ориентир. Region, season, зрелость, упитанность, and measurement метод can изменить the результат substantially.
- Always используйте coefficients with the same тип длины and единица assumption. The internal base is cm and g.
- Справочные пресеты are not operating значения. Используйте measured data to build your own sets whenever possible.