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bunkat/grid.js

Created May 5, 2012 19:38
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Grid in d3.js
Raw
grid.js
/**
* calendarWeekHour Setup a week-hour grid:
* 7 Rows (days), 24 Columns (hours)
* @param id div id tag starting with #
* @param width width of the grid in pixels
* @param height height of the grid in pixels
* @param square true/false if you want the height to
* match the (calculated first) width
*/
function calendarWeekHour(id, width, height, square)
{
var calData = randomData(width, height, square);
console.log(calData);
var grid = d3.select(id).append("svg")
.attr("width", width)
.attr("height", height)
.attr("class", "chart");
var row = grid.selectAll(".row")
.data(calData)
.enter().append("svg:g")
.attr("class", "row");
var col = row.selectAll(".cell")
.data(function (d) { return d; })
.enter().append("svg:rect")
.attr("class", "cell")
.attr("x", function(d) { return d.x; })
.attr("y", function(d) { return d.y; })
.attr("width", function(d) { return d.width; })
.attr("height", function(d) { return d.height; })
.on('mouseover', function() {
d3.select(this)
.style('fill', '#0F0');
})
.on('mouseout', function() {
d3.select(this)
.style('fill', '#FFF');
})
.on('click', function() {
console.log(d3.select(this));
})
.style("fill", '#FFF')
.style("stroke", '#555');
}
////////////////////////////////////////////////////////////////////////
/**
* randomData() returns an array: [
[{id:value, ...}],
[{id:value, ...}],
[...],...,
];
~ [
[hour1, hour2, hour3, ...],
[hour1, hour2, hour3, ...]
]
*/
function randomData(gridWidth, gridHeight, square)
{
var data = new Array();
var gridItemWidth = gridWidth / 24;
var gridItemHeight = (square) ? gridItemWidth : gridHeight / 7;
var startX = gridItemWidth / 2;
var startY = gridItemHeight / 2;
var stepX = gridItemWidth;
var stepY = gridItemHeight;
var xpos = startX;
var ypos = startY;
var newValue = 0;
var count = 0;
for (var index_a = 0; index_a < 7; index_a++)
{
data.push(new Array());
for (var index_b = 0; index_b < 24; index_b++)
{
newValue = Math.round(Math.random() * (100 - 1) + 1);
data[index_a].push({
time: index_b,
value: newValue,
width: gridItemWidth,
height: gridItemHeight,
x: xpos,
y: ypos,
count: count
});
xpos += stepX;
count += 1;
}
xpos = startX;
ypos += stepY;
}
return data;
}
Raw
index.html
<html>
<head>
<title>Grid using d3.js</title>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.v2.js"></script>
</head>
<body>
<div id="chart"></div>
<script type="text/javascript" src="grid.js"></script>
<script type="text/javascript">
calendarWeekHour('#chart', 900, 400, true);
</script>
</body>
</html>
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