Currently, I am utilizing a tutorial for graph tooltips and finding it to be very effective:
http://bl.ocks.org/d3noob/c37cb8e630aaef7df30d
It is working seamlessly for me!
However, I have encountered a slight problem...
In the tutorial, the graph displays black dots on the line...
I would prefer the tooltips and black dots to only show up when I hover over them, rather than constantly displaying.
Is there a way to achieve this desired behavior?
After updating the answer, here is the code snippet for handling mouseout event:
https://plnkr.co/edit/9Ej1MYpGqxBdeWO2FUNO?p=preview.on("mouseover", function(d) {
// Highlight the selected circle
d3.select(this)
.transition()
.duration(200)
.style("opacity", 0.9);
.on('mouseout', function(d) {
// Hide the circle
d3.select(this)
.transition()
.duration(100)
.style("opacity", 0);
// Hide the tooltip
d3.selectAll(".tooltip")
.transition()
.duration(100)
.style("opacity", 0);
For proper usage of mouseout, adjust the tooltip position slightly higher and move the entire svg down a bit:
div.html(
'<a href= "http://google.com">' +
formatTime(d.date) +
"</a>" +
"<br/>" + d.close)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY - 42) + "px");
var margin = {top: 50, right: 20, bottom: 30, left: 50},
Since mouseout can be abrupt, consider increasing the circle radius for a smoother user experience:
svg.selectAll("dot")
.data(data)
.enter().append("circle")
.attr("r", 8)
Alternatively, you may find it better to work without mouseout for a more intuitive interaction:
View the old working example here: https://plnkr.co/edit/IitMgKW0jDYlWifokcZB?p=preview
To implement this, add the following code within .on("mouseover", function(d):
.on("mouseover", function(d) {
// Hide other circles
d3.selectAll('circle')
.style("opacity", 0);
// Highlight the selected circle
d3.select(this)
.transition()
.duration(200)
.style("opacity", 0.9);
It's important to note that using mouseout in this scenario won't be effective due to overlapping circles and tooltip.
Check out this minimalistic d3 tooltip code example!
https://github.com/exampleuser/d3-tooltip/
function customTooltip(tipName){
"use strict";
var tooltip = {};
tooltip.name = tipName ? tipName : "customTooltip";
tooltip.width = 0; // tooltip width
tooltip.height = 0; // tooltip height
tooltip.tipNode = d3.select("body").append("div") // tooltip HTML element
.attr("class", tooltip.name)
.style("opacity", 1e-6)
.style("position", "absolute");
tooltip.onMouseOver = function(htmlContent) {
/** @param {string} htmlContent - Content for the tooltip */
tooltip.tipNode.html(htmlContent)
.transition()
.duration(300)
.style("opacity", 1);
/** Calculate width & height of tooltip after setting inner HTML */
tooltip.calculateSize();
};
tooltip.onMouseMove = function(){
tooltip.tipNode.style("left", (d3.event.pageX - tooltip.width/2) + "px")
.style("top", (d3.event.pageY - tooltip.height - 5) + "px")
.style("opacity", 1);
};
tooltip.onMouseOut = function() {
tooltip.tipNode.transition()
.duration(300)
.style("opacity", 1e-6)
.each("end", function(){
tooltip.tipNode.html("");
});
};
/** Calculate width and height of the tooltip and assign values to width & height properties of the Tooltip object */
tooltip.calculateSize = function(){
var size = tooltip.tipNode.node().getBoundingClientRect();
tooltip.width = size.width;
tooltip.height = size.height;
};
return tooltip;
}
Eric mentioned in the comments that this method may not be the most user-friendly, but if you're interested, here's how it can be done:
To start, adjust the opacity of the circles by setting it to 0:
.attr("opacity", 0)
Next, when the mouse moves over:
.on("mouseover", function(d) {
d3.select(this).attr("opacity", 1);
div.transition()//add the remaining code
Remember to add a mouse out function to make the circles transparent again:
.on("mouseout", function(d) {
d3.select(this).attr("opacity", 0);
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