Whittaker's Algorithm

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const cold_desert_slope = 1.3636;
const woodland_slope = 5.4545;
const seasonal_forest = 10.00;
const temparature_rain_forest = 14.5454;
const subtropical_desert = 4.6153;
const tropical_seasonal_forest = 5.00;
const tropical_rain_forest = 7.69;


function check_secondPhase( temperature, precipitation){
    let a=precipitation/22.00;
    if (a<=cold_desert_slope)return 2;
    else if (a>cold_desert_slope&&a<=woodland_slope)return 3;
    else if (a>woodland_slope&&a<=seasonal_forest)return 4;
    else if (a>seasonal_forest&&a<=temparature_rain_forest)return 5;
    return 6;
}
function check_thirdPhase(temperature, precipitation){
    let a=precipitation-temperature*(60.00/13.00);
    if (a<61.538)return 7;
    else if (a>=61.538&&a<118.461)return 8;
    return 6;
}

function getBiome( temperature, precipitation){

    if (temperature< -2.00)return 1;
    else if (temperature> -2.00&&temperature<=7.00)return 9;
    else if (temperature>7.00&&temperature<18.00)return check_secondPhase(temperature, precipitation);
    else if (temperature>=18.00&&temperature<33.00) return check_thirdPhase(temperature, precipitation);
    return 8;

}

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