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per_capita_gdp.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>New Visualization</title>
<script type="text/javascript" src="dat.gui.min.js"></script>
<script type="text/javascript" src="../../d3.v2.js"></script>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.svg.js"></script>
<script type="text/javascript">
function export_svg() {
$('svg').svg();
var xml = $('svg').svg('get').toSVG();
$('#svgexport').html(xml.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>'));
}
</script>
<!-- Styles don't flow into exported SVG, so only use for web -->
<style>
svg {border: 1px solid gray;}
</style>
</head>
<body>
<script type="text/javascript">
var gui = new dat.GUI();
var dat_gui_ranges = {
scale : [0.01, 3],
w : [0, 800],
h : [0, 1200],
t_margin : [0, 100],
r_margin : [0, 100],
b_margin : [0, 100],
l_margin : [0, 100],
tick_length : [0, 20],
y_axis_fontsize : [0, 20],
x_axis_font_rotation: [0, 360],
fill_opacity : [0,1],
point_size :[0,20],
}
//put all hard coded values in this object
var params = {
scale: 1.7,
w: 525,
h: 325,
t_margin: 20,
r_margin: 20,
b_margin: 85,
l_margin: 50,
bar_width: 50,
tick_length: 7,
x_axis_color: "gray",
x_axis_fontcolor: "gray",
x_axis_fontsize: 10,
x_axis_font_rotation: 320,
y_axis_color: "gray",
y_axis_fontcolor: "gray",
y_axis_fontsize: 10,
area_color: "#224970",
fill_opacity: 0.2,
point_size :2.5,
//just to store for redraw
viz_data: [],
};
function left_boundary() { return params.l_margin; }
function right_boundary() { return params.w * params.scale - params.r_margin; }
function top_boundary() { return params.t_margin; }
function bottom_boundary() { return params.h * params.scale - params.b_margin; }
function pf(num) {
return parseFloat(num.replace(",", ""));
}
function init_viz_element(svg, elem_with_class, data) {
var elem_parts = elem_with_class.split(".");
var elem = elem_parts[0];
var elem_class = elem_parts[1];
var viz_element = svg.selectAll(elem_with_class).data(data);
viz_element.enter().append(elem).attr("class", elem_class);
viz_element.exit().remove();
return viz_element;
}
function draw(data) {
//store things for next draw iteration
params.viz_data = data;
var max_y_val = 45; // replace with actual value from data
//preparing SVG Area
var svg = d3.selectAll("svg");
svg.
attr("height", function(d,i) {return params.h * params.scale}).
attr("width", function(d) {return params.w * params.scale}).
attr("fill", 'green')
.data([data]);
var headers = d3.keys(data[0]); //alert(headers);
var categories = headers.slice(1); //alert(categories.toSource());
var first_year = d3.min(data, function(row) {return row[headers[0]]});
var last_year = d3.max(data, function(row) {return row[headers[0]]});
var x = d3.scale.linear().domain([first_year,last_year]).range([left_boundary(), right_boundary() ]);
var y = d3.scale.linear().domain([15, max_y_val]).range([bottom_boundary(), top_boundary() ]);
var line = init_viz_element(svg, "path.line", function(d) { return [d]; })
.attr("d", d3.svg.line()
.x(function(d) { return x(d.year); })
.y(function(d) { return y(d.us); })
)
.attr("stroke", params.area_color)
.attr("fill", "none");
var line2 = init_viz_element(svg, "path.line2", function(d) { return [d]; })
.attr("d", d3.svg.line()
.x(function(d) { return x(d.year); })
.y(function(d) { return y(d.hi); })
)
.attr("stroke", "#E88020")
.attr("fill", "none");
//------ x Axis -------------------------------------------------------------------
var xaxis = init_viz_element(svg, "line.xaxis", ["dummy_data"])
.attr("y1", bottom_boundary())
.attr("y2", bottom_boundary())
.attr("x1", function(d) {return left_boundary()})
.attr("x2", function(d) {return right_boundary()})
.attr("stroke", params.x_axis_color);
var xticks = init_viz_element(svg, "line.xtick", x.ticks(30))
.attr("y1", bottom_boundary())
.attr("y2", bottom_boundary() + params.tick_length )
.attr("x1", function(d) {return x(d)})
.attr("x2", function(d) {return x(d)})
.attr("stroke", params.x_axis_color);
var xtick_labels = init_viz_element(svg, "text.xtick_label", x.ticks(30))
.attr("x", function(d) { return x(d)})
.attr("y", bottom_boundary())
.attr("fill", params.x_axis_fontcolor)
.attr("font-size", params.x_axis_fontsize+"px")
.attr("transform", function(d) {return "rotate("+params.x_axis_font_rotation +" "+ (x(d)+params.tick_length*4).toString() + "," + bottom_boundary() + ")"; })
.attr("text-anchor", "end")
.text(function(d) {return d; });
//------ x Axis End -------------------------------------------------------------------
//------ y Axis -------------------------------------------------------------------
var yaxis = init_viz_element(svg, "line.yaxis", ["dummy_data"])
.attr("x1", left_boundary())
.attr("x2", left_boundary())
.attr("y1", function(d) {return top_boundary()})
.attr("y2", function(d) {return bottom_boundary()})
.attr("stroke", params.y_axis_color);
var yticks = init_viz_element(svg, "line.ytick", y.ticks(10))
.attr("y1", function(d) {return y(d)})
.attr("y2", function(d) {return y(d)})
.attr("x1", left_boundary() - params.tick_length)
.attr("x2", left_boundary() )
.attr("stroke", params.y_axis_color);
var ytick_labels = init_viz_element(svg, "text.ytick_label", y.ticks(10))
.attr("y", function(d) { return y(d) + (params.y_axis_fontsize / 3.5)})
.attr("x", left_boundary() - params.tick_length * 1.5)
.attr("fill", params.y_axis_fontcolor)
.attr("font-size", params.y_axis_fontsize+"px")
.attr("text-anchor", "end")
.text(function(d) {return d; });
//------ y Axis End -------------------------------------------------------------------
}
//read data once and start do initial draw
d3.csv("per_capita_gdp.csv", draw);
//all dat.gui changes should trigger a redraw
// generate the dat.gui control for any numerical ranges
d3.entries(dat_gui_ranges).forEach(function(elem) {
var attr = elem.key;
var range = elem.value;
gui.add(params, attr, range[0], range[1]).onChange(function() { draw(params.viz_data); });
} );
//add color or custom controls here
</script>
<h1>Chart Title</h1>
<div id= "chart_div">
<svg></svg>
</div>
<button onclick="export_svg();" />export</button>
<pre><div id="svgexport">export will go here</div></pre>
</body>
</html>