Coronavirus deaths / cases ratio

        function round_prct(number) {
            return Math.round((number + Number.EPSILON) * 10000) / 100;
        }

        function round_2d(number) {
            return Math.round((number + Number.EPSILON) * 100) / 100;
        }

        function get_number(cells, position) {
            return cells.eq(position).text().replaceAll(",","");
        }

        function build_cell(data_n, display_n, processing_func) {
            var red_color = ((data_n <= 0 || isNaN(data_n)) ? 0 : processing_func(data_n));
            var bg_color, black_text;
            if (data_n < 0 || isNaN(data_n)) {
                bg_color = "white";
                black_text = true;
            } else {
                bg_color = "rgb(" + red_color + ", " + (255 - red_color) + ", 0)";
                black_text = red_color > 210 || red_color < 80;
            }
            var text_color = black_text ? "black" : "white";
            return '<td style="font-weight: bold; text-align:right; background-color:' + bg_color + '; color: ' + text_color + '">' + display_n + '</td>';
        }

        function log(number) {
            return Math.min((Math.log10(number) + 2) * 255);
        }

        function arctan(number) {
            return 510 * Math.atan(number) / Math.PI;
        }

        function active_fun(number) {
            if (number > 20000)
                return 255;
            if (number > 10000)
                return 200;
            if (number > 5000)
                return 150;
            if (number > 1000)
                return 120;
            if (number > 100)
                return 50;
            return 0;
        }

        function new_fun(number) {
            if (number > 500)
                return 255;
            if (number > 200)
                return 200;
            if (number > 100)
                return 150;
            if (number > 50)
                return 120;
            if (number > 10)
                return 50;
            return 0;
        }


        var countries_rows = $("#main_table_countries_yesterday tr");
        var size = countries_rows.length;

        countries_rows.each(function(i, e) {
            if (i == 0) {
                $(this).append('<th class="sorting">Deaths/ cases</th>');
                //$(this).append('<th class="sorting">Deaths/ 1M pop </th>');
                $(this).append('<th class="sorting">Active/ 1M pop </th>');
                $(this).append('<th class="sorting">New/ 1M pop </th>');
            } else if (i == size - 1) {
                $(this).append('<td></td>');
            } else {
                var cells = $(this).children("td");

                var cases_total = get_number(cells, 2);
                var deaths = get_number(cells, 4);
                var cases_per_cap = get_number(cells, 9);
                var population = get_number(cells, 13);
                var active = get_number(cells, 7);
                var new_cases = get_number(cells, 3);
                var new_deaths = get_number(cells, 5);

                var deaths_to_cases = deaths / cases_total;
                var deaths_to_pop = (deaths * cases_per_cap) / cases_total;
                var active_to_pop = active * (10 ** 6) / population;
                var new_to_pop = new_cases * (10 ** 6) / population;
                var new_deaths_to_pop = new_deaths * (10 ** 6) / population;
                var rounded_dtc = round_prct(deaths_to_cases);
                var rounded_dtp = round_2d(deaths_to_pop);
                var rounded_atp = round_2d(active_to_pop);
                var rounded_ntp = round_2d(new_to_pop);
                var rounded_ndtp = round_2d(new_deaths_to_pop);

                if (deaths != "") {
                    $(this).append(build_cell(deaths_to_cases, rounded_dtc + '%', log));
                } else {
                    $(this).append(build_cell(-1, "N/A"));
                }
                //$(this).append(build_cell(deaths_to_pop, rounded_dtp, arctan));
                if (!isNaN(active) && active != "" && population > 0) {
                    $(this).append(build_cell(active_to_pop, rounded_atp, active_fun));
                } else {
                    $(this).append(build_cell(-1, "N/A"));
                }
                if (!isNaN(new_cases) && new_cases != "" && population > 0) {
                    $(this).append(build_cell(new_to_pop, rounded_ntp, new_fun));
                } else {
                    $(this).append(build_cell(-1, "N/A"));
                }

                if (!isNaN(new_deaths) && new_deaths != "" && population > 0) {
                    $(this).append(build_cell(new_deaths_to_pop, rounded_ndtp, new_fun));
                } else {
                    $(this).append(build_cell(-1, "N/A"));
                }
            }
        });