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Commit f2f82f1a authored by luroth's avatar luroth
Browse files

New params form xmid and scla (now setting Asym to 90% canopy coverage and not 100%)

parent 3d6f4308
......@@ -33,12 +33,12 @@ def tiller_prediction(LA, GDD_BBCH30):
# scale to plot size of 125 * 50 * 3 (mm)
LA = (LA / 1.0) * (0.125 * 0.150)
#Asym: Model was fit to plot size of 125 * 50 * 3 (mm)
Asym = 125 * 50 * 3
#Asym: Model was fit to plot size of 125 * 50 * 3 (mm), 90% canopy coverage as theoretical maximum
Asym = ((125 * 50 * 3) * 0.9 ** 2)
# xmid and scal: Dependend on GDD_BBCH30, empirical estimation with 2018/2019 data
xmid = 3.39 + GDD_BBCH30 * -0.00417
scal = 0.877 + GDD_BBCH30 * 0.00302
xmid = 3.040694822 + GDD_BBCH30 * -0.005602603
scal = 0.729949090 + GDD_BBCH30 * 0.002182503
# Dependence leaf area to tiller count:
# LA ~ SSlogis(log(tiller_count+1), 125 * 50 * 3, xmid, scal)
......
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