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* checkpoint vitepress docs * edits * edits * hero drop shadow * d3-array edits * resolve d3 * split d3-array * move d3-array stuff around * d3-array is collapsed: true * italicize parameter names * searching edits * update dependencies * d3-array edits * array edits * array edits * array edits * array edits * array edits * move files * array edits * array edits * array edits * getting started edits * modules page * array edits * more structure * live example * dsv edits * fetch edits * dsv edits * random edits * time format edits * time edits * time edits * modules edits * color edits * color edits * interpolate edits * scale-chromatic edits * selection edits * break up d3-interpolate * scale edits * time scale edits * scale edits * scale edits * band edits * band edits * more descriptive titles * band and point edits * sequential edits * diverging edits * quantize edits * quantile edits * threshold edits * doc edits * fix titles * sequential edits * axis edits * axis edits * axis edits * shape edits * shape edits * dark mode chart * dark mode chart * curve edits * interpolate edits * line edits * link edits * radial edits * pie edits * symbol edits * stack edits * stack examples * path edits * polygon edits * quadtree edits * random examples * ease edits * ease edits * ease edits * timer edits * delaunay edits * quadtree find example * voronoi edits * dispatch edits * contour edits * chord edits * chord edits * fix find highlight * quadtree animation * transition edits * transition edits * transition edits * zoom edits * drag edits * brush edits * force edits * voronoi neighbors example * hierarchy edits * api edits * community edits * getting started edits * geo edits * Add short "D3 in React" section (#3659) * Add short "D3 in React" section I know you removed the TODO but I was already trying to fill it in! I think just making the distinction of modules that touch the DOM and those that don't was super clarifying for me personally when I figured that out. And I always forget the most basic ref pattern (and still might've messed it up here). I don't think we should get into updating or interactivity or whatever, but I think just this much goes a long way toward demystifying (and showing just the most basic best practices). * forgot i made data generic, rm reference to normal distribution * useEffect cleans up after itself Co-authored-by: Mike Bostock <mbostock@gmail.com> * Update getting-started.md --------- Co-authored-by: Mike Bostock <mbostock@gmail.com> * build fixes * index edits --------- Co-authored-by: Toph Tucker <tophtucker@gmail.com>
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Adding numbers
Add floating point numbers with full precision.
new Adder()
const adder = new d3.Adder();
Examples · Source · Creates a new adder with an initial value of 0.
adder.add(number)
adder.add(42)
Adds the specified number to the adder’s current value and returns the adder.
adder.valueOf()
adder.valueOf() // 42
Returns the IEEE 754 double-precision representation of the adder’s current value. Most useful as the short-hand notation +adder, or when coercing as Number(adder).
fsum(values, accessor)
d3.fsum([0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]) // 1
Examples · Source · Returns a full-precision summation of the given values. Although slower, d3.fsum can replace d3.sum wherever greater precision is needed.
d3.fsum(penguins, (d) => d.body_mass_g) // 1437000
If an accessor is specified, invokes the given function for each element in the input values, being passed the element d, the index i, and the array data as three arguments; the returned values will then be added.
fcumsum(values, accessor)
d3.fcumsum([1, 1e-14, -1]) // [1, 1.00000000000001, 1e-14]
Examples · Source · Returns a full-precision cumulative sum of the given values as a Float64Array. Although slower, d3.fcumsum can replace d3.cumsum when greater precision is needed.
d3.fcumsum(penguins, (d) => d.body_mass_g) // [3750, 7550, 10800, 10800, 14250, …]
If an accessor is specified, invokes the given function for each element in the input values, being passed the element d, the index i, and the array data as three arguments; the returned values will then be added.