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var svg = d3.select("svg") |
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/* |
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sample row (u(integer) stands for unused field) |
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num,date,time,bsl,id,u1,u2,u3,u4,....,u12 |
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"165", "02/02/2016", "08:26:20", "15.76" |
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onetouch .csv writer generates a verbose format. |
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*/ |
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// "02/02/2016/08:26:20" |
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var format = d3.time.format("%m/%d/%Y/%H:%M:%S"); |
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d3.csv("sugars.csv", function(error, data) { |
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if (error) throw error; |
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data = csv_preprocessor(data); |
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d3.json("compiled.json", function(error, food) { |
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if (error) throw error; |
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food = json_preprocessor(food); |
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// both data and food are processed, ready to rock. |
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draw_graph(data, food); |
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}); |
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}); |
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function csv_preprocessor(data){ |
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// reduce down to : UNIXTIME / BSL |
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data.forEach(function(d) { |
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var unix_str = d.date + "/" + d.time; |
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var date_stamp = format.parse(unix_str); |
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d.unix = d3.time.hour.offset(date_stamp, 1); // gmt to dutch |
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d.bsl = +d.bsl; |
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}); |
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return data; |
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} |
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function json_preprocessor(p){ |
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var new_object_array = []; |
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for (var key in p) { |
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if (p.hasOwnProperty(key)) { |
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var gmt = format.parse(key); |
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var unix = d3.time.hour.offset(gmt, 0); |
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new_object_array.push({time: unix, statement: p[key]}); |
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} |
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} |
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return new_object_array; |
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} |
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function draw_graph(data, food){ |
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var margin = {top: 20, right: 80, bottom: 30, left: 50}, |
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width = 960 - margin.left - margin.right, |
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height = 500 - margin.top - margin.bottom; |
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var x = d3.time.scale() |
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.range([0, width]); |
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var x2 = d3.time.scale() |
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.range([0, width]); |
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var y = d3.scale.linear() |
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.range([height, 0]); |
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var y2 = d3.scale.linear() |
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.range([height, 0]); |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.ticks(d3.time.days, 1) |
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.orient("bottom"); |
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var yAxis = d3.svg.axis() |
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.scale(y) |
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.orient("left"); |
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var x2Axis = d3.svg.axis() |
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.scale(x2) |
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.orient("top"); |
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var y2Axis = d3.svg.axis() |
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.scale(y2) |
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.orient("right"); |
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function adjust_date(date, add){ |
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return d3.time.day.offset(date, add) |
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} |
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var first_day = adjust_date(data[data.length - 1].unix, -1) |
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var last_day = adjust_date(data[0].unix, 1) |
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x.domain([first_day, last_day]); |
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x2.domain([first_day, last_day]); |
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y.domain(d3.extent(data, function(d) { return d.bsl; })); |
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y2.domain([0, 24]); |
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svg |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom); |
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var g1 = svg.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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var g2 = svg.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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g1.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0, " + height + ")") |
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.call(xAxis); |
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g1.append("g") |
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.attr("class", "y axis") |
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.call(yAxis) |
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.append("text") |
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.attr("transform", "rotate(-90)") |
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.attr("y", 6) |
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.attr("dy", ".71em") |
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.style("text-anchor", "end") |
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.text("Glucose"); |
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g2.append("g") |
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.attr("class", "y2 axis") |
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.attr("transform", "translate(" + width + ", 0)") |
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.call(y2Axis) |
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.append("text") |
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.attr("transform", "rotate(-90)") |
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.attr("y", width) |
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.attr("dy", ".71em") |
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.style("text-anchor", "end") |
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.text("Food time"); |
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var circle = g1.selectAll('circle').data(data); |
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var circleEnter = circle.enter().append('circle'); |
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circleEnter |
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.attr("cx", function(d, i){return x(d.unix);}) |
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.attr("cy", function(d, i){return y(d.bsl);}) |
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.attr("r", function(d, i) {return 3}) |
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.style({fill: "#fe42ec"}) |
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var crect = g2.selectAll('rect').data(food); |
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var crectEnter = crect.enter().append('rect'); |
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crectEnter |
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.attr("width", 7) |
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.attr("height", 13) |
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.attr("x", function(d, i){return x2(d.time);}) |
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.attr("y", function(d, i){return y2(d.time.getHours());}) |
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.attr("r", 3) |
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.style({fill: "#56feb3"}) |
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} |