d3-path | Serialize Canvas path commands to SVG | Canvas library

I'm close to finish my first project with d3.js. It calculates the potential energy available to a skier and I want to calculate the expected speed of the skier if all this energy is converted to kinetic energy. The final thing I want is to add a transition to the skier when he is dropped. I want the skier to always transit to the black circle on the right (p2). The duration of the transition doesn't matter right now. Is there an easy way to accomplish this task?

I have managed to drag a skier along a line. The final big step is to create a tooltip that calculates the Y-location of the skier as I drag him up on the line. Let's say that the top on the line corresponds to 100 meter and the buttom of the line to be 0. Is this possible? If so, how can I accomplish this?

I want to build a visualization in D3.js that illustrates the concept of potential energy and kinetic energy for my students. In essence, I want the students to be able to drag a skier up a slope (i.e. a Line) and when they drop him, he transits down again. I'm sure it is an easy task in D3 but I'm struggling to understand how I can get the skier icon to be draggable only along the line path?

Here's an image for illustration:

I want the skier icon to switch place with the ball with the green connector. I have used https://observablehq.com/@mbostock/closest-point-on-line as inspiration for this project. Here, you can drag the circle up and down but the small ball will always be on that line. I want the same thing with my skier but I'm struggling to understand how I can accomplish this?

Here's the fiddle.

I'm a newbie both in JSON and js. I'm trying to load json data based on this radarchart. If I add the data just after var data = MY DATA, it works but if I load json file, it doesn't. For loading data, I follow the last suggestion entitled “What does d3.json return?” (v5) of this post--in fact the others didn't worked too--; thus, I have added in addition to which I used for other barplots and piecharts in the same webpage.

It works

I'm trying to animate multiple paths, where each path draws at a variable speed as it passes through subsequent sections. The paths should start drawing at the same time (but could end at different times). I'm using this example as a reference, but it only draws one line.

I have each path drawn separately and the lengths of each line segment, but the animation doesn't start and I don't think I'm accessing the speeds correctly in the last few lines.

Here is a fiddle for a full view, but the salient part is below. What's going wrong here?

I have used the pattern of reusable charts described by mike bostock. I am facing one problem.

Pie Chart functionality :-
1. When i click on a tab of pie chart, it should rotate and put the color which i clicked, on top.

Problem :-
1. When i click on first chart. The functionality is implemented but it is implemented on 2nd chart.

I think the problem is related to global declaration. But i haven't declared anything globally.

Please someone help me with this pretty basic task.

This is my js fiddle link where you can check this anamoly. https://jsfiddle.net/a0u2nk47/

This is a code for making pie chart.

I have added 2 functionalities to pie chart. First one is to increase the arc size when mouse hovers on it.

Second is that when i hover, tooltip displays y position of mouse and this tooltip moves with mouse.

But problem with me is that. Tooltip Text is not moving with movement of mouse.

I have seen various stack overflow links for this but i am unable to find solution. Below i have also attached links that so that the question is not marked duplicate.

Please do not give me a new code for tooltip. Correct this one.

Below are the links that i have already visited
Why is my D3.js tooltip not working
D3 - Positioning tooltip on SVG element not working
Tooltips not showing on mouse move and mouse over

Link of jsfiddle :- https://jsfiddle.net/uoh1bsrp/ Thanks,
Shubham Sharma

I have built a simple tree with sample flare data. However, this tree does not fit into my svg and all the nodes overlap with each other as shown in the demo. Is there any way to fix this problem of overlapping child nodes in a given SVG canvas width and height? I tried with separation as given in here however it did not work. And I do not know how to fix this in d3 v4.

I'm trying to create a basic sankey diagram using d3 libraries loaded from requirejs. In the past I've used the core d3 library and rendered everything fine, however in trying to load d3-sankey in this instance it doesn't seem to be registering. I've also tinkered around with the shim but I can't seem to figure out where the issue is specifically. Every time I try to load the attached code I get the error 'Uncaught TypeError: d3.sankey is not a function'.

I'm assuming the issue is the sequencing of libraries being loaded, but again I'm not sure how to resolve this. Can anyone help?

Codepen - https://codepen.io/quirkules/pen/wYoXxQ