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.
-
-
Save erlenstar/9375722 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .axis text { | |
| font: 11px sans-serif; | |
| } | |
| .axis path { | |
| display: none; | |
| } | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .grid-background { | |
| fill: #ddd; | |
| } | |
| .grid line, | |
| .grid path { | |
| fill: none; | |
| stroke: #fff; | |
| shape-rendering: crispEdges; | |
| } | |
| .grid .minor.tick line { | |
| stroke-opacity: .5; | |
| } | |
| .brush .extent { | |
| stroke: #1d9fcb; | |
| fill: #1d9fcb; | |
| fill-opacity: .225; | |
| shape-rendering: crispEdges; | |
| } | |
| </style> | |
| <body> | |
| <h3>Brush Date Selector</h3> | |
| <p> | |
| <span class="start">start</span> to <span class="end">end</span> | |
| </p> | |
| <!-- <script src="/~jeffz/lib/js/d3.v3.min.js"></script> --> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var margin = {top: 200, right: 40, bottom: 200, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| // reset dimensions | |
| margin = {top: 10, right: 10, bottom: 20, left: 10}; | |
| width = 420; | |
| height = 32; | |
| var $start = d3.select("span.start"), | |
| $end = d3.select("span.end"); | |
| var start = new Date(), | |
| startExtent = start, | |
| endExtend = d3.time.day.offset(start, 3), | |
| end = d3.time.day.offset(start, 14); | |
| var x = d3.time.scale() | |
| .domain([start, end]) | |
| .range([0, width]); | |
| var brush = d3.svg.brush() | |
| .x(x) | |
| .extent([startExtent, endExtend]) | |
| .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 + ")") | |
| .call(d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom") | |
| .ticks(d3.time.hours, 6) | |
| .tickSize(-height) | |
| .tickFormat("")) | |
| .selectAll(".tick") | |
| .classed("minor", function(d) { return d.getHours(); }); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom") | |
| .ticks(d3.time.days, 2) | |
| .tickFormat(d3.time.format("%m/%d")) | |
| .tickPadding(0)) | |
| .selectAll("text") | |
| .attr("x", -14) | |
| .style("text-anchor", null); | |
| var gBrush = svg.append("g") | |
| .attr("class", "brush") | |
| .call(brush); | |
| gBrush.selectAll("rect") | |
| .attr("height", height); | |
| var bucket = d3.scale.quantize() | |
| .domain([start, end]) | |
| .range(d3.time.hours(start, end, 6)); | |
| function brushed() { | |
| var extent0 = brush.extent(), | |
| extent1; | |
| // if dragging, preserve the width of the extent | |
| if (d3.event.mode === "move") { | |
| var d0 = bucket(extent0[0]), | |
| d1 = bucket(extent0[1]); | |
| //d1 = d3.time.day.offset(d0, Math.round((extent0[1] - extent0[0]) / 864e5)); | |
| extent1 = [d0, d1]; | |
| } | |
| // otherwise, if resizing, round both dates | |
| else { | |
| extent1 = extent0.map(bucket); | |
| // if empty when rounded, use floor & ceil instead | |
| if (extent1[0] >= extent1[1]) { | |
| extent1[0] = bucket(extent0[0]); | |
| extent1[1] = bucket(extent0[1]); | |
| } | |
| } | |
| // update the labels | |
| renderRange(extent1); | |
| d3.select(this).call(brush.extent(extent1)); | |
| } | |
| function renderRange(extent) { | |
| $start.text(d3.time.format.iso(extent[0])); | |
| $end.text(d3.time.format.iso(extent[1])); | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment