我正在D3中使用此脚本制作图表
<script type="">
var margin = {top: 20, right: 200, bottom: 100, left: 50},
margin2 = { top: 430, right: 10, bottom: 20, left: 40 },
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom,
height2 = 500 - margin2.top - margin2.bottom;
var parseDate = d3.time.format("%Y-%m-%d").parse;
var bisectDate = d3.bisector(function(d) { return d.date; }).left;
var xScale = d3.time.scale()
.range([0, width]),
xScale2 = d3.time.scale()
.range([0, width]); // Duplicate xScale for brushing ref later
var yScale = d3.scale.linear()
.range([height, 0]);
// 4 Custom DDV colors
var color = d3.scale.ordinal().range(["#cc0000", "#993300", "#ffcc00", "#72C39B"]);
var xAxis = d3.svg.axis()
.scale(xScale)
.orient("bottom"),
xAxis2 = d3.svg.axis() // xAxis for brush slider
.scale(xScale2)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(yScale)
.orient("left");
var line = d3.svg.line()
.interpolate("basis")
.x(function(d) { return xScale(d.date); })
.y(function(d) { return yScale(d.rating); })
.defined(function(d) { return d.rating; }); // Hiding line value defaults of 0 for missing data
var maxY; // Defined later to update yAxis
var svg = d3.select("div#map").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom) //height + margin.top + margin.bottom
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
// Create invisible rect for mouse tracking
svg.append("rect")
.attr("width", width)
.attr("height", height)
.attr("x", 0)
.attr("y", 0)
.attr("id", "mouse-tracker")
.style("fill", "white");
//for slider part-----------------------------------------------------------------------------------
var context = svg.append("g") // Brushing context box container
.attr("transform", "translate(" + 0 + "," + 410 + ")")
.attr("class", "context");
//append clip path for lines plotted, hiding those part out of bounds
svg.append("defs")
.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
//end slider part-----------------------------------------------------------------------------------
d3.csv("test.csv", function(error, data) {
color.domain(d3.keys(data[0]).filter(function(key) { // Set the domain of the color ordinal scale to be all the csv headers except "date", matching a color to an issue
return key !== "date";
}));
data.forEach(function(d) { // Make every date in the csv data a javascript date object format
d.date = parseDate(d.date);
});
var categories = color.domain().map(function(name) { // Nest the data into an array of objects with new keys
return {
name: name, // "name": the csv headers except date
values: data.map(function(d) { // "values": which has an array of the dates and ratings
return {
date: d.date,
rating: +(d[name]),
};
}),
// visible: (name === "CumulativeFilesRequested" ? true : false) // "visible": all false except for economy which is true.
};
});
xScale.domain(d3.extent(data, function(d) { return d.date; })); // extent = highest and lowest points, domain is data, range is bouding box
yScale.domain([0, 100
//d3.max(categories, function(c) { return d3.max(c.values, function(v) { return v.rating; }); })
]);
xScale2.domain(xScale.domain()); // Setting a duplicate xdomain for brushing reference later
//for slider part-----------------------------------------------------------------------------------
var brush = d3.svg.brush()//for slider bar at the bottom
.x(xScale2)
.on("brush", brushed);
context.append("g") // Create brushing xAxis
.attr("class", "x axis1")
.attr("transform", "translate(0," + height2 + ")")
.call(xAxis2);
var contextArea = d3.svg.area() // Set attributes for area chart in brushing context graph
.interpolate("monotone")
.x(function(d) { return xScale2(d.date); }) // x is scaled to xScale2
.y0(height2) // Bottom line begins at height2 (area chart not inverted)
.y1(0); // Top line of area, 0 (area chart not inverted)
//plot the rect as the bar at the bottom
context.append("path") // Path is created using svg.area details
.attr("class", "area")
.attr("d", contextArea(categories[0].values)) // pass first categories data .values to area path generator
.attr("fill", "#F1F1F2");
//append the brush for the selection of subsection
context.append("g")
.attr("class", "x brush")
.call(brush)
.selectAll("rect")
.attr("height", height2) // Make brush rects same height
.attr("fill", "#E6E7E8");
//end slider part-----------------------------------------------------------------------------------
// draw line graph
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("x", -10)
.attr("dy", ".71em")
.style("text-anchor", "end");
var issue = svg.selectAll("div#map")
.data(categories) // Select nested data and append to new svg group elements
.enter().append("g")
.attr("class", "issue");
issue.append("path")
.attr("class", "line")
.style("pointer-events", "none") // Stop line interferring with cursor
.attr("id", function(d) {
return "line-" + d.name.replace(" ", "").replace("/", ""); // Give line id of line-(insert issue name, with any spaces replaced with no spaces)
})
.attr("d", function(d) {
return d.visible ? line(d.values) : null; // If array key "visible" = true then draw line, if not then don't
})
.attr("clip-path", "url(#clip)")//use clip path to make irrelevant part invisible
.style("stroke", function(d) { return color(d.name); });
// draw legend
var legendSpace = 450 / categories.length; // 450/number of issues (ex. 40)
issue.append("rect")
.attr("width", 10)
.attr("height", 10)
.attr("x", width + (margin.right/3) - 15)
.attr("y", function (d, i) { return (legendSpace)+i*(legendSpace) - 8; }) // spacing
.attr("fill",function(d) {
return d.visible ? color(d.name) : "#F1F1F2"; // If array key "visible" = true then color rect, if not then make it grey
})
.attr("class", "legend-box")
.on("click", function(d){ // On click make d.visible
d.visible = !d.visible; // If array key for this data selection is "visible" = true then make it false, if false then make it true
maxY = findMaxY(categories); // Find max Y rating value categories data with "visible"; true
yScale.domain([0,maxY]); // Redefine yAxis domain based on highest y value of categories data with "visible"; true
svg.select(".y.axis")
.transition()
.call(yAxis);
issue.select("path")
.transition()
.attr("d", function(d){
return d.visible ? line(d.values) : null; // If d.visible is true then draw line for this d selection
})
issue.select("rect")
.transition()
.attr("fill", function(d) {
return d.visible ? color(d.name) : "#F1F1F2";
});
})
.on("mouseover", function(d){
d3.select(this)
.transition()
.attr("fill", function(d) { return color(d.name); });
d3.select("#line-" + d.name.replace(" ", "").replace("/", ""))
.transition()
.style("stroke-width", 2.5);
})
.on("mouseout", function(d){
d3.select(this)
.transition()
.attr("fill", function(d) {
return d.visible ? color(d.name) : "#F1F1F2";});
d3.select("#line-" + d.name.replace(" ", "").replace("/", ""))
.transition()
.style("stroke-width", 1.5);
})
issue.append("text")
.attr("x", width + (margin.right/3))
.attr("y", function (d, i) { return (legendSpace)+i*(legendSpace); }) // (return (11.25/2 =) 5.625) + i * (5.625)
.text(function(d) { return d.name; });
// Hover line
var hoverLineGroup = svg.append("g")
.attr("class", "hover-line");
var hoverLine = hoverLineGroup // Create line with basic attributes
.append("line")
.attr("id", "hover-line")
.attr("x1", 10).attr("x2", 10)
.attr("y1", 0).attr("y2", height + 10)
.style("pointer-events", "none") // Stop line interferring with cursor
.style("opacity", 1e-6); // Set opacity to zero
var hoverDate = hoverLineGroup
.append('text')
.attr("class", "hover-text")
.attr("y", height - (height-40)) // hover date text position
.attr("x", width - 150) // hover date text position
.style("fill", "blue"); // hover date color fill
var columnNames = d3.keys(data[0]) //grab the key values from your first data row
//these are the same as your column names
.slice(1); //removes the first column name (`date`) from the side menu
var focus = issue.select("g") // create group elements to house tooltip text
.data(columnNames) // bind each column name date to each g element
.enter().append("g") //create one <g> for each columnName
.attr("class", "focus");
focus.append("text") // http://stackoverflow.com/questions/22064083/d3-js-multi-series-chart-with-y-value-tracking
.attr("class", "tooltip")
.attr("x", width + 10) // position tooltips to show the value
.attr("y", function (d, i) { return (legendSpace)+i*(legendSpace); }); // (return (11.25/2 =) 5.625) + i * (5.625) // position tooltips
// Add mouseover events for hover line.
d3.select("#mouse-tracker") // select chart plot background rect #mouse-tracker
.on("mousemove", mousemove) // on mousemove activate mousemove function defined below
.on("mouseout", function() {
hoverDate
.text(null) // on mouseout remove text for hover date
d3.select("#hover-line")
.style("opacity", 1e-6); // On mouse out making line invisible
});
function mousemove() {
var mouse_x = d3.mouse(this)[0]; // Finding mouse x position on rect
var graph_x = xScale.invert(mouse_x); //
//var mouse_y = d3.mouse(this)[1]; // Finding mouse y position on rect
//var graph_y = yScale.invert(mouse_y);
//console.log(graph_x);
var format = d3.time.format('%b %Y'); // Format hover date text to show three letter month and full year
hoverDate.text(format(graph_x)); // scale mouse position to xScale date and format it to show month and year
d3.select("#hover-line") // select hover-line and changing attributes to mouse position
.attr("x1", mouse_x)
.attr("x2", mouse_x)
.style("opacity", 1); // Making line visible
// Legend tooltips // http://www.d3noob.org/2014/07/my-favourite-tooltip-method-for-line.html
var x0 = xScale.invert(d3.mouse(this)[0]), /* d3.mouse(this)[0] returns the x position on the screen of the mouse. xScale.invert function is reversing the process that we use to map the domain (date) to range (position on screen). So it takes the position on the screen and converts it into an equivalent date! */
i = bisectDate(data, x0, 1), // use our bisectDate function that we declared earlier to find the index of our data array that is close to the mouse cursor
/*It takes our data array and the date corresponding to the position of or mouse cursor and returns the index number of the data array which has a date that is higher than the cursor position.*/
d0 = data[i - 1],
d1 = data[i],
/*d0 is the combination of date and rating that is in the data array at the index to the left of the cursor and d1 is the combination of date and close that is in the data array at the index to the right of the cursor. In other words we now have two variables that know the value and date above and below the date that corresponds to the position of the cursor.*/
d = x0 - d0.date > d1.date - x0 ? d1 : d0;
focus.select("text").text(function(columnName){
return (d[columnName]);
});
};
//for brusher of the slider bar at the bottom
function brushed() {
xScale.domain(brush.empty() ? xScale2.domain() : brush.extent()); // If brush is empty then reset the Xscale domain to default, if not then make it the brush extent
svg.select(".x.axis") // replot xAxis with transition when brush used
.transition()
.call(xAxis);
maxY = findMaxY(categories); // Find max Y rating value categories data with "visible"; true
yScale.domain([0,maxY]); // Redefine yAxis domain based on highest y value of categories data with "visible"; true
svg.select(".y.axis") // Redraw yAxis
.transition()
.call(yAxis);
issue.select("path") // Redraw lines based on brush xAxis scale and domain
.transition()
.attr("d", function(d){
return d.visible ? line(d.values) : null; // If d.visible is true then draw line for this d selection
});
};
}); // End Data callback function
function findMaxY(data){ // Define function "findMaxY"
var maxYValues = data.map(function(d) {
if (d.visible){
return d3.max(d.values, function(value) { // Return max rating value
return value.rating; })
}
});
return d3.max(maxYValues);
}
</script>
我的图表在safari中工作正常但是在chrome或firefox中看不到滑块。有什么建议为什么会这样？
我在这里附上图表的一些测试数据：
date,Files Requested,Volume Requested,Files Stored, Volume Stored
1996-01-01,0.077,0.013,0.837,0.282
1996-02-01,0.085,0.018,0.877,0.311
1996-03-01,0.113,0.022,0.923,0.359
1996-04-01,0.125,0.030,0.993,0.401
1996-05-01,0.138,0.035,1.060,0.444
1996-06-01,0.167,0.040,1.105,0.490
感谢您的帮助。
答案 0 :(得分：0)
如果您使用的是http://bl.ocks.org/DStruths/9c042e3a6b66048b5bd4中的CSS，那么问题就出现了，因为CSS中的hover-line具有以下不透明度属性
opacity: 1e-6;
删除此行可以解决您的问题。