I need to change the fill color (internal area) in a Line Chart.js when the point is negative.  The code is simple and basic:  $(document).ready(function(){    var ctx = $("#myChart").get(0).getContext("2d");    var data = {       lab...
Does anyone know of a Javascript charting library that can handle huge datasets?  By 'huge', I mean drawing a line graph with around 1,000 lines and 25,000 data points in total. (With an uneven distribution of points per line. A lot of lines...
I have been working on dc and crossfilter js and I currently have a large dataset with 550,000 rows and size 60mb csv and am facing a lot of issues with it like browser crashes etc  So , I'm trying to understand how dc and crossfilter deals with...
Sorry for the somewhat confusing title.  Not sure really how to title this.  My situation is this- I have an academic simulation tool, that I in the process of developing a web front-end for.  While the C++-based simulator is computationally quite ef...
I have an list of objects, let's call it dataset and I want to split into two new lists, let's call them trainSet and testSet, while reading the input dataset list line by line, where a list object inherits from a node read stream object (in...
I am trying to use:   document.querySelectorAll('[data-r=0 data-c=0]');  to select a specific HTML element but it returns:     Uncaught DOMException: Failed to execute 'querySelectorAll' on 'Document': '[data-r=0 data-c=0]...
Im having trouble with some javascript in the onFetch step of a dataset in a BIRT report.  I've added logging in the initialise step of the report in a few different ways. The runtime im using is Tivoli Common Reporting, and they supply a logging...
here to feel stupid again. I have used this method to change the width of a div countless times. This time i am using the same dataset to just add a class to "show" a simple snackBar. However, I continue to get "null" for var x. What...
I have a thesaurus app, so the user may enter "dog" as a base word, and "canine,hound,mutt" as the synonyms. These are then added to a database. Along with adding "dog" as the base word, i'd like to make multiple simultane...
I have two datasets that look like this:  var gatePos = [      { gate: 1, x: 1177, y: 200 },     { gate: 2, x: 1109, y: 200 },     { gate: 3, x: 1042, y: 200 },     { gate: 4, x: 975, y: 200 },     { gate: 5, x: 908, y: 200 },     { gate: 6, x: 842,...

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