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@apolan
Last active September 7, 2016 03:22
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gradesBlock
license: mit
scrolling: no
height: 0

what

Dataset Types: Tables. La información de las notas está organizada en arreglo de objetos

why

Present - Discover - lookup - explore En la visualización soporta la organización de las notas para que de esa forma el usuario puede ver la tendencia de las calificaciones-

how:

Order - Look - navegate - embed La visualización permite interactuar con el usuario que cuando quiere mayor detalle selecciona cada barra que simboliza las notas

Decidí tomar representar el problema con diagrama de barras debido a que por el tipo de variables como código y promedio es la mejor manera para mostrar esta información. Las marcas en este caso usadas son las líneas y el canal el color de las líneas.

forked from apolan's block: gradesBlock

<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.bar {
fill: orange;
}
.bar:hover {
fill: orangered ;
}
.x.axis path {
display: none;
}
.d3-tip {
line-height: 1;
font-weight: bold;
padding: 12px;
background: rgba(0, 0, 0, 0.8);
color: #fff;
border-radius: 2px;
}
/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
box-sizing: border-box;
display: inline;
font-size: 10px;
width: 100%;
line-height: 1;
color: rgba(0, 0, 0, 0.8);
content: "\25BC";
position: absolute;
text-align: center;
}
/* Style northward tooltips differently */
.d3-tip.n:after {
margin: -1px 0 0 0;
top: 100%;
left: 0;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>
<script>
// The new data variable.
var data = [
{"code":23802620, "grade":4.85},
{"code":23802825, "grade":4.865},
{"code":23801894, "grade":3.24},
{"code":23802926, "grade":5},
{"code":23800661, "grade":3.19},
{"code":23800768, "grade":3.98},
{"code":23800972, "grade":4.89},
{"code":23801922, "grade":3.73},
{"code":23805498, "grade":4.795},
{"code":23805913, "grade":4.85},
{"code":23800311, "grade":2.81},
{"code":23806395, "grade":4.72},
{"code":23808850, "grade":3.85},
{"code":23802872, "grade":2.16},
{"code":23802105, "grade":4.715},
{"code":23809880, "grade":4.92},
{"code":23802056, "grade":4.48},
{"code":23807897, "grade":5.2},
{"code":23807916, "grade":5},
{"code":23801962, "grade":3.62},
{"code":23808246, "grade":4.61},
{"code":23802600, "grade":0.11},
{"code":23808311, "grade":4.7}
];
//INIT
var margin = {top: 40, right: 20, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal().rangeRoundBands([0, width], .1);
var y = d3.scale.linear().range([height, 0]);
var xAxis = d3.svg.axis().scale(x).orient("bottom");
var yAxis = d3.svg.axis().scale(y).orient("left");
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-10, 0])
.html(function(d) {
return "<strong>Grade:</strong> <span style='color:red'>" + d.grade + "</span><br><strong>Code:</strong><span style='color:red'>" + d.code + "</span>";
})
paint(data);
function paint(data){
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
svg.call(tip);
// The following code was contained in the callback function.
x.domain(data.map(function(d) { return d.code; }));
y.domain([0, d3.max(data, function(d) { return d.grade; })]);
svg.append("g")
//.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
//.call(xAxis)
.append("text")
.attr("transform", "rotate(0)")
.attr("y", 9)
.attr("x", width)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Estudiantes");
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("grades");
svg.selectAll(".bar")
.data(data)
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return x(d.code); })
.attr("width", x.rangeBand()-10)
.attr("y", function(d) { return y(d.grade); })
.attr("height", function(d) { return height - y(d.grade); })
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
}
function organizarData() {
// The following code was contained in the callback function.
data.sort(function(a, b){
var gradeA=a.grade, gradeB=b.grade
if (gradeA < gradeB) //sort string ascending
return -1
if (gradeA > gradeB)
return 1
return 0 //default return value (no sorting)
});
paint(data);
}
</script>
<div id="option">
<input name="updateButton"
type="button"
value="Organizar"
onclick="organizarData()" />
</div>
</body>
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