I am trying to do an drill-down on bar graph using NVD3.js library. Chart has been made successfully. now I want to call an Json API by clicking on a particular bar so that new chart can be generated as per the parameter.
nv.addGraph(function() {
var chart = nv.models.discreteBarChart()
.x(function(d) { return d.label })
.y(function(d) { return d.value })
.showValues(true)
.duration(1000)
.showLegend(true)
;
d3.select('#chart1 svg')
.datum(data)
.transition().duration(500)
.call(chart);
chart.discretebar.dispatch.on("elementClick", function(e) {
alert("You've clicked " + e.data.label);
});
d3.select('#chart1 svg').datum(historicalBarChart).call(chart);
nv.utils.windowResize(chart.update);
return chart;
});
I get the alert with the label value of the bar on which i clicked. Now I want to call an Json API instead of alert.
Kindly help
Thanks
Refer to http://learnjsdata.com/read_data.html
d3.json("/data/employees.json", function(data) {
console.log(data[0]);
});
In this Plunkr after you've updated the chart, the percentage that's displayed is completely wrong.
The displayed percentage before the update is however correct and I have no idea as to why this is .
Here's part of the code that isn't behaving as expected.
label.transition()
.duration(750)
.text(function(d) {
return textFormat(100/(d.data.total/d.data["apples" + CAT]))+'%'});
Any help is appreciated!
You only ever calculate d.total for category one. In your update function you need to rerun:
data.forEach(function(d) {
d.total = d3.sum(data, function(d) { return d3.sum([d["apples" + CAT]]); });
});
I am creating graph in nvd3 FIDDLE
I am done with graph and its working nicely but now I want to add brush in it like d3 see this example: http://bl.ocks.org/mbostock/1667367. but i searched every where, i found one solution i.e crossfilter but is it possible to use brush like d3 and nvd3 has any brush function ? please help me.
nv.addGraph(function() {
var chart = nv.models.multiBarChart();
chart.xAxis
.tickFormat(d3.format(',f'));
chart.yAxis
.tickFormat(d3.format(',.1f'));
chart.multibar.stacked(true); // default to stacked
chart.showControls(true); // don't show controls
d3.select('#chart svg')
.datum(test_data)
.transition().duration(500).call(chart);
nv.utils.windowResize(chart.update);
return chart;
});
I wonder how can you add brush using crossfilter?
Any way here is the solution
nv.addGraph(function() {
var chart = nv.models.multiBarChart();
chart.xAxis
.tickFormat(d3.format(',f'));
chart.yAxis
.tickFormat(d3.format(',.1f'));
chart.multibar.stacked(true); // default to stacked
chart.showControls(true); // don't show controls
d3.select('#chart svg')
.datum(test_data)
.transition().duration(500).call(chart);
var brushC = d3.select('#chart svg g');
brushC.empty() ? brushC.append('g'): brushC.select('g')
.attr("class", "brush")
.call(d3.svg.brush()
.x(chart.xAxis.scale())
.on('brushend', onBrush)
.extent([0,0])
)
.selectAll('rect')
.attr('height',320 )//change according to you chart height
//i have hard coded it since it was a 'quick and dirty' fix
//you may try to get it from chart, if you can please update me.
;
}
nv.utils.windowResize(chart.update);
return chart;
});
onBrush Function
function onBrush() {
brushExtent = d3.event.target.extent();
console.log(brushExtent);
}
add CSS
rect.extent{
color:grey;
opacity:0.4;
}
I've gotten lost amongst the d3.js weeds. I'm putting together a chart using nvd3.js (http://i.stack.imgur.com/ghueS.png).
But, while the colors appear correct in the legend, they do not in the chart. Additionally, there is significant white space in the hovering tooltip.
Looking into the object structure, I get what looks like one layer of keys too many, which makes me think the color issue and white space have to do with my actual keys being too far buried in the object (http://i.stack.imgur.com/k46CO.png).
I've looked into nest() and rollup(), but can't comprehend how they might help.
My javascript is as follows:
d3.csv("http://fwllc.wpstagecoach.com/wp-content/themes/frameworkcr/markers.csv",function(err,data){
var noDates = d3.keys(data[0]).filter(function(k){return k!="date"});
var dataToPlot = noDates.map(function(k){
return {"key":k,
"values":data.map(function(d){
return {
"x":d3.time.format("%m/%d/%y").parse(d.date),
"y":+d[k]
}
})}
})
console.log(d3.entries(dataToPlot));
nv.addGraph(function() {
var chart = nv.models.lineChart()
.margin({left: 100}) //Adjust chart margins to give the x-axis some breathing room.
.useInteractiveGuideline(true) //We want nice looking tooltips and a guideline!
// .transitionDuration(350) //how fast do you want the lines to transition?
.showLegend(true) //Show the legend, allowing users to turn on/off line series.
.showYAxis(true) //Show the y-axis
.showXAxis(true) //Show the x-axis
;
chart.xAxis //Chart x-axis settings
.tickFormat(function(d) { return d3.time.format("%m/%d/%y")(new Date(d)); });
chart.yAxis //Chart y-axis settings
.axisLabel('Total Return Percent')
.tickFormat(d3.format('%'));
d3.select('#chart').append("svg")
.datum(dataToPlot)
.call(chart);
nv.utils.windowResize(function() { chart.update() });
return chart;
});
})
And a portion of my .csv file:
date,ESG,global100,outperformance
12/22/08,0,0,0
3/23/09,-0.059812891,-0.094081914,0.034269023
6/22/09,0.137426291,0.033160892,0.104265399
9/21/09,0.418041893,0.249191458,0.168850435
12/21/09,0.460914373,0.294278644,0.166635729
3/22/10,0.504442354,0.306489826,0.197952528
I copied you code to a plnkr, it seems correct...
<div id="chart" style="width:300px; height:300px"></div>
plnkr
So I am using nvd3 and I want to show 2 lines in one line chart. I know the code is alright as I am trying it on the live code of nvd3 and it works fine. I read in many places though that the code they use on the nvd3 live code is not the same as the api.
So the graph is shaded and has dots. However in the live code of nvd3 there are no dots and no shaded area.
Thus is my code :
nv.addGraph(function() {
var chart = nv.models.lineChart()
.useInteractiveGuideline(true)
.width(900)
.height(600)
.margin({
left: 75,
right: 50
})
.showLegend(true)
.showYAxis(true)
.showXAxis(true)
.width(800)
.height(900);
;
chart.xAxis
.tickFormat(d3.format(',r'))
;
chart.yAxis
.tickFormat(d3.format('.02f'))
;
//console.log(json);
d3.select('#Average_Life svg')
.datum([{"values":[{"x":0,"y":2042},{"x":173,"y":1922},{"x":347,"y":1873},{"x":526,"y":1907},
{"x":700,"y":1883},{"x":931,"y":1854},{"x":1058,"y":1710},{"x":1220,"y":1473},{"x":1399,"y":1792},
{"x":1584,"y":1869},{"x":1752,"y":2259},{"x":1983,"y":2288},{"x":2105,"y":2524},{"x":2284,"y":2770},
{"x":2469,"y":2857},{"x":2637,"y":2698},{"x":2811,"y":2760},{"x":3042,"y":2596},{"x":3169,"y":2500},
{"x":3331,"y":2408},{"x":3522,"y":2355},{"x":3690,"y":2500},{"x":3863,"y":2524},{"x":4095,"y":2447}],
"key":"dd","color":"#34418f"},{"values":[{"x":0,"y":3753},{"x":173,"y":3609},{"x":347,"y":3464},
{"x":526,"y":3315},{"x":700,"y":3170},{"x":931,"y":2977},{"x":1058,"y":2871},{"x":1220,"y":2736},
{"x":1399,"y":2587},{"x":1584,"y":2433},{"x":1752,"y":2293},{"x":1983,"y":2100},{"x":2105,"y":1999},
{"x":2284,"y":1849},{"x":2469,"y":1695},{"x":2637,"y":1555},{"x":2811,"y":1411},{"x":3042,"y":1218},
{"x":3169,"y":1112},{"x":3331,"y":977},{"x":3522,"y":818},{"x":3690,"y":678},{"x":3863,"y":534},
{"x":4095,"y":341}],"key":"ss","color":"#f9b800"}])
.transition().duration(500)
.call(chart);
//Update the chart when window resizes.
nv.utils.windowResize(function() {
chart.update()
});
return chart;
});
So I would like to know why the shaded area and the dots. And why I dont get to see the axis,
Cheers
Having the exact same issue on the shading. My solution is to just select all groups (the path elements are sorted into groups) and set fill: none right after i render the chart
This is my code
function test(data) {
/*These lines are all chart setup. Pick and choose which chart features you want to utilize. */
nv.addGraph(function () {
var chart = nv.models.lineChart()
.margin({left: 100}) //Adjust chart margins to give the x-axis some breathing room.
.useInteractiveGuideline(true) //We want nice looking tooltips and a guideline!
// .transitionDuration(350) //how fast do you want the lines to transition?
.showLegend(true) //Show the legend, allowing users to turn on/off line series.
.showYAxis(true) //Show the y-axis
.showXAxis(true) //Show the x-axis
;
chart.xAxis //Chart x-axis settings
.axisLabel('Time (sec)')
.tickFormat(d3.format('.01f'));
chart.yAxis //Chart y-axis settings
.axisLabel('Torque (NM)')
.tickFormat(d3.format(',r'));
d3.select('#chart') //Select the <svg> element you want to render the chart in.
.datum(data) //Populate the <svg> element with chart data...
.call(chart); //Finally, render the chart!
d3.selectAll('g').style('fill', 'none');
//Update the chart when window resizes.
nv.utils.windowResize(function () {
chart.update()
});
return chart;
});
}