joshcarr/README.md

## README.md

      
    Raw
  

              README.md
            
          
    This brush snaps to day boundaries. As the user brushes, the brush fires brush events, allowing a listener to adjust the brush extent. Compare this approach to using brush transitions on brushend.

  
## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

.axis text {
  font: 11px sans-serif;
  fill: #999;
}

.axis path {
  display: none;
}

.axis line {
  fill: none;
  stroke: #DDD;
  shape-rendering: crispEdges;
}

.grid-background {
  fill: none;
}

.grid line,
.grid path {
  fill: none;
  stroke: #DDD;
  shape-rendering: crispEdges;
}

.grid .minor.tick line {
  stroke-opacity: .5;
}

.brush .extent {
  stroke: #DDD;
  fill: #DDD;
  shape-rendering: crispEdges;
}

g.brush>.resize {
  display: none;
}

</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script>

var margin = {top: 1, right: 1, bottom: 20, left: 1},
    width = 960 - margin.left - margin.right,
    height = 35 - margin.top - margin.bottom;

var x = d3.time.scale()
    .domain([new Date('July 31, 2014 06:00:00'), new Date('July 31, 2014 23:59:59')])
    .range([0, width]);

var brush = d3.svg.brush()
    .x(x)
    .extent([new Date('July 31, 2014 06:00:00'), new Date('July 31, 2014 07:00:00')])
    .on("brush", brushed);

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.append("rect")
    .attr("class", "grid-background")
    .attr("width", width)
    .attr("height", height);

svg.append("g")
    .attr("class", "x grid")
    .attr("transform", "translate(0," + height/2 + ")")
    .call(d3.svg.axis()
        .scale(x)
        .orient("bottom")
        .ticks(d3.time.minutes, 60)
        .tickSize(-height*2)
        .tickFormat(""))
  .selectAll(".tick")
    .classed("minor", function(d) { console.log(d);return d.getMinutes(); });

svg.append("g")
    .attr("class", "x axis")
    .attr("transform", "translate(0," + height/2 + ")")
    .call(d3.svg.axis()
      .scale(x)
      .orient("bottom")
      .ticks(d3.time.hours, 3)
      .tickPadding(height/2)
      .tickFormat(d3.time.format("%-I %p"))
    )
  .selectAll("text")
    .attr("x", 6)
    .style("text-anchor", null);

var gBrush = svg.append("g")
    .attr("class", "brush")
    .call(brush);

gBrush.selectAll("rect")
    .attr("height", height);

function brushed() {

  var extent0 = brush.extent(),
      extent1;

  // console.log(extent0);

  // if dragging, preserve the width of the extent
  // if (d3.event.mode === "move") {
    var d0 = d3.time.hour.floor(extent0[0]),
        d1 = d3.time.hour.offset(d0, 1);
    extent1 = [d0, d1];
  // }

  // // otherwise, if resizing, round both dates
  // else {
  //   extent1 = extent0.map(d3.time.hour.round);

  //   // if empty when rounded, use floor & ceil instead
  //   if (extent1[0] >= extent1[1]) {
  //     extent1[0] = d3.time.hour.floor(extent0[0]);
  //     extent1[1] = d3.time.hour.ceil(extent0[1]);
  //   }
  // }

  console.log(extent1[0]);

  d3.select(this).call(brush.extent(extent1));
}

</script>

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.axis text {
	font: 11px sans-serif;
	fill: #999;
	}

	.axis path {
	display: none;
	}

	.axis line {
	fill: none;
	stroke: #DDD;
	shape-rendering: crispEdges;
	}

	.grid-background {
	fill: none;
	}

	.grid line,
	.grid path {
	fill: none;
	stroke: #DDD;
	shape-rendering: crispEdges;
	}

	.grid .minor.tick line {
	stroke-opacity: .5;
	}

	.brush .extent {
	stroke: #DDD;
	fill: #DDD;
	shape-rendering: crispEdges;
	}

	g.brush>.resize {
	display: none;
	}

	</style>
	<body>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
	<script>

	var margin = {top: 1, right: 1, bottom: 20, left: 1},
	width = 960 - margin.left - margin.right,
	height = 35 - margin.top - margin.bottom;

	var x = d3.time.scale()
	.domain([new Date('July 31, 2014 06:00:00'), new Date('July 31, 2014 23:59:59')])
	.range([0, width]);

	var brush = d3.svg.brush()
	.x(x)
	.extent([new Date('July 31, 2014 06:00:00'), new Date('July 31, 2014 07:00:00')])
	.on("brush", brushed);

	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.append("rect")
	.attr("class", "grid-background")
	.attr("width", width)
	.attr("height", height);

	svg.append("g")
	.attr("class", "x grid")
	.attr("transform", "translate(0," + height/2 + ")")
	.call(d3.svg.axis()
	.scale(x)
	.orient("bottom")
	.ticks(d3.time.minutes, 60)
	.tickSize(-height*2)
	.tickFormat(""))
	.selectAll(".tick")
	.classed("minor", function(d) { console.log(d);return d.getMinutes(); });

	svg.append("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + height/2 + ")")
	.call(d3.svg.axis()
	.scale(x)
	.orient("bottom")
	.ticks(d3.time.hours, 3)
	.tickPadding(height/2)
	.tickFormat(d3.time.format("%-I %p"))
	)
	.selectAll("text")
	.attr("x", 6)
	.style("text-anchor", null);

	var gBrush = svg.append("g")
	.attr("class", "brush")
	.call(brush);

	gBrush.selectAll("rect")
	.attr("height", height);

	function brushed() {

	var extent0 = brush.extent(),
	extent1;

	// console.log(extent0);

	// if dragging, preserve the width of the extent
	// if (d3.event.mode === "move") {
	var d0 = d3.time.hour.floor(extent0[0]),
	d1 = d3.time.hour.offset(d0, 1);
	extent1 = [d0, d1];
	// }

	// // otherwise, if resizing, round both dates
	// else {
	// extent1 = extent0.map(d3.time.hour.round);

	// // if empty when rounded, use floor & ceil instead
	// if (extent1[0] >= extent1[1]) {
	// extent1[0] = d3.time.hour.floor(extent0[0]);
	// extent1[1] = d3.time.hour.ceil(extent0[1]);
	// }
	// }

	console.log(extent1[0]);

	d3.select(this).call(brush.extent(extent1));
	}

	</script>