I'm trying to replicate the trulia's graph with D3.js, but only the main chart (the heatmap) and the daily graph (the graph bar that changes when you hover the mouse over a specific point on the main chart).
Using this example, I've managed to build the main chart with my own data. I also have the second chart. But now I have no clue on how to update this second chart when I hover on a point on main chart.
Essentially, what you're going to have is two different charts with different data. The first chart (the heatmap) controls the other one. Each data point on the heatmap has a day and an hour attribute, which we want to use to control the second graph. To do this, we can use two functions to control the second graph, and then call both of them every time someone clicks on a point.
The first function just needs to build a blank graph for the target day.
function updateGraphDay(newDay){
//Remove current graph and build graph for newDay
}
The second is one that will highlight a certain hour on the bar chart. I'm assuming here that your bar chart is in its own SVG, barGraphSVG, and all of the bars have the class hourBar, and that the data you used to create it has an hour attribute, like the heat map data.
function updateGraphHour(newHour){
barGraphSVG.selectAll('.hourBar')
.classed('selectedBar', function(d){ return d.hour === newHour });
}
Now you just call both of these when you hover on one of the rect elements in the bar chart.
heatMap.on('hover', function(d){
updateGraphDay(d.day);
updateGraphHour(d.hour);
});
Related
https://institutional.fidelity.com/app/item/RD_13569_45180/the-art-and-science-of-investment-decision-making.html
There is a very nice graph and pie chart under Investment Decision-Making in 2016.
I know it is highcharts now. I want to write something similar. But I can't find any chart type similar in its document.
Could you tell me what kind of chart it is? And how to put different data items inside the bubble.
It looks like a combination of line, bubble and pie series.
Line series (alternative: scatter with lineWidth > 0) lies under the bubbles. All interaction with this series should be disabled (hover state, tooltip, etc.).
Text inside the bubble is data label (dataLabels.enabled property should be set to true). You can manage its content in dataLabels.formattercallback function.
You can handle showing/adding pie (donut) charts in plotOptions.bubble.point.events.mouseover callback function. Text in the middle of a donut can be rendered via SVGRenderer.text().
All options that I mentioned can be found in the API: https://api.highcharts.com/highcharts/
function chart (data, selector) {
// generate chart with zoom feature. it scales the X domain and update the chart accordingly.
}
chart(dataset1, "#chart1")
chart(dataset2, "#chart2")
chart(datasetn, "#chartn")
the code above is a chart generator function which I give it different datasets to make me charts. in all charts, the dataset has the same X values but different Y values.
problem:
lets say we have 3 charts, all the X axis ranges are between 0-100. In the first chart, I drag mouse and create a zoombox between 30-60 and the first chart updates, now it is scaled between 30-60. But the second and third chart are intact. I need them to be updated as well between 30-60.
similarly if I do the same for second chart, I need the first and third one get updated.
here is jsfiddle to illustration
I made not so big modification to make this works.
First of all we remember globally the information about single chart in var charts array. This is done during creation of charts
charts.push(lineChart(data1,"#chart1"));
charts.push(lineChart(data2,"#chart2"));
charts.push(lineChart(data3,"#chart3"));
Next we can use this array in function zoomdrag and update.
This work maybe not perfect (reset of chart is missing) but show how to handle it and get the same zoom in all charts.
Here is jsfiddle
I am working on adding transition to the line chart, copied a example from herehttp://bl.ocks.org/d3noob/7030f35b72de721622b8, i want the line chart to do transition when the interval happens, like in the example when you click the button the chart will move to left but in my plunkerhttps://plnkr.co/edit/sCJYfXDSjXN1IiFokK1V?p=preview doesn't work, I put the d3 code in angular's custom directive because i have a requirement where graph will be repeated more than 5 times any help is much appreciated
In your update data function, selection of the chart was var svg = d3.select("lineChart").transition();. It should be var svg = d3.select(".lineChart").transition();
I am using chart.js to try to create a timeline of events relative to current date.
The horizontal bar chart is close but would like to show only the tips of the bars eg as points which would pretty much be a horizontal line chart.
I have shown my horizontal bar chart along with a mock-up of what it would look like as horizontal line chart.
Is this possible with chart.js ?
You first need to know that every information that you can edit about the chart is stored in the variable containing your chart (called myChart usually, but my2Bar in your fiddle).
If you want to globally change the graph, you will need to edit attributes in myChart.config.options.
If you want to change a specific chart, you will need to edit attributes in myChart.config.data.
In this case, you need to change a specific chart (which is the horizontal bar).
If you happen to check the logs of your graph, and go very deep in the config, you will finally see that bars in your chart are drawn using attributes stored in myChart.config.data.datasets[0]._meta[0].data[n]._model (n being the nth rectangle drawn, top to bottom).
Some attributes you can find there :
base : The X position where the rectangle is starting to be drawn (0 in your xAxe for instance).
x : The rectangle is being drawn until this X position.
height : The height of the drawn rectangle.
and so on ...
To edit these values, you just need to loop in your different rectangles (the n in the above path).
But you just can't do it manually on the config of your variable. If you do this, it won't work since your chart is responsive (on resize, it will redraw the chart using the former options).
What you must use are Chart.js plugins.
Plugins let you handle all the events that are triggered while creating, updating, rendering your graph.
Then, in your beforeRender event (triggered after the initialisation, but before the drawing), you need to loop in your different rectangles to edit the values to affect how they will be drawn :
beforeRender: function(chart) {
for (var i = 0; i < chart.config.data.datasets[0]._meta[0].data.length; i++) {
// Change both `3` values to change the height & width of the point
chart.config.data.datasets[0]._meta[0].data[i]._model["base"] = chart.config.data.datasets[0]._meta[0].data[i]._model["x"] + 3;
chart.config.data.datasets[0]._meta[0].data[i]._model["height"] = 3;
}
}
Here is a jsFiddle with the final result.
Unfortunately, I wasn't able to make round dots, instead of squared ones.
Update :
I have also made another jsFiddle where all the dots are linked together which makes it look like it is a horizontal line chart (can be improved of course, but it is a good start).
I'm looking for an answer similar to a previous question:
Link: chart js tooltip how to control the data that show
But I need a solution for a Line Chart via Chart.js. I'm wanting a line chart with multiple lines and I would like each point to return only the data for that point in the tooltip. By default the tooltip returns data in a group for each point at the index you hover over. So I would want each point to only return it's data and have it's own tooltip box.
See default example of line chart : http://www.chartjs.org/docs/#line-chart
It would also be nice if I could have all the tooltips displayed by default and not triggered by a mouse hover.