5.2. Arrays in the Population Cohort Mod el
95
3
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1: SMOOTHFRAC... 2: SMOOTH FRAC... 3 SMOOTHFRAC... 4: SMOOTHFRAC... 5: SMOOTHFRAC...
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0.25
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1:
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FIGURE 5.19
FISH LENGTH MODEL WITH ARRAYS
YEAR_O_l[ LENGTH] (tl = YEAR_O_l[LENGTH] (t -dtl +
(BI RTHS [LENGTH] -AGE_O_ l[LENGTH] - DEATHS_O_l[LENGTH] I *
d t
I NI T YEAR_O_l[LENGTH] = 100
INFLOWS :
BIRTHS [SHORT] =
BIRTH_RATE_l_2 [SHORT] *RAND_l_2 [SHORT ] *YEAR_l _2 [SHORT] +
BI RTH_RATE_ 2_3 [SHORT ]*RAND_2_3 [SHORT] *YEAR_2_3 [SHORT] +
BIRTH_RATE_ l_2[ MED ] * . 5* (1-RAND_l_2[MED ] I *YEAR_l_2 [MED]+
BI RTH_RATE_2_3 [MED]*. 5* (1 -RAND_2_3 [MED ] I *YEAR_2 _3 [MED] +
BI RTH_RATE_l_2 [LONG] *(1 /31*(1 -
RAND_l _ 2[ LONG ] I *YEAR_ l _2 [LONG]+
BIRTH_RATE_2_3 [LONG] * (1 / 31* (1RAND_2_3 [LONG ] l *YEAR_2 _ 3 [LONG]
BIRTHS[MED] =
BI RTH_RATE_l_2 [MED ] *RAND_ l _2 [MED] *YEAR_ l_2 [MED] +
BIRTH_RATE_2_3 [MED] *RAND_ 2_3[MED] *YEAR_2_ 3 [MED]+
BIR TH_RATE_ l _ 2[SHORT] * (2 / 3 1* (1RAND_l_2 [SHORT] I *YEAR_l_2 [SHORT] +
BI RTH_ RATE_ 2_3 [SHORT] * (2 / 31*( 1RAND_2 _3[SHORT] I *YEAR_ 2_3 [SHORT] +