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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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food hints: |
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*/ |
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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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draw_graph(data); |
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}); |
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function csv_preprocessor(data){ |
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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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// 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 draw_graph(data){ |
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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 y = 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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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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y.domain(d3.extent(data, function(d) { return d.bsl; })); |
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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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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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var circle = g1.selectAll('circle').data(data); |
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var circleEnter = circle.enter().append('circle'); |
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circleEnter.attr("cx", function(d, i){return x(d.unix);}) |
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circleEnter.attr("cy", function(d, i){return y(d.bsl);}) |
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circleEnter.attr("r", function(d, i) {return 3}) |
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circleEnter.style({fill: "#002200"}) |
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} |