uPlot.js on HackerShow

Data

charting library

SHOW HN2019

Legend

An exceptionally fast, tiny time series chart

Shown by leeoniya on Oct 9, 2019. Click the card to turn it over.

260points

81comments

#128of 2,195 in 2019

Top 6%of 2019 by points

How HN took it

DebatedReal support and real criticism

9 positive, 14 neutral or asking, 0 mixed, 13 critical, out of 36 comments about the project. Thread score -0.07.

Execution: 0 for, 6 againstPerformance: 3 for, 1 againstDesign: 0 for, 3 againstDocs: 0 for, 2 againstIdea: 2 for, 0 against

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

Very fast rendering of large datasets
From 2 comments
- Awesome!! It's been disheartening to see flotjs (which was essentially unmaintained for 5 years) still beat out scores of other charting libraries in terms of raw speed. Over the…
  seanlaff on HN
- > it can create an interactive chart containing 150,000 data points in 50ms Very impressive in a world of over engineering and over designed charts!
  edf13 on HN
Small, lightweight library
From 1 comment
- Awesome!! It's been disheartening to see flotjs (which was essentially unmaintained for 5 years) still beat out scores of other charting libraries in terms of raw speed. Over the…
  seanlaff on HN

Benchmarks compare unlike feature sets (apples vs oranges)
From 1 comment
- After having a look at the code and the list of "non-features" (which is a rather opinionated list I might add) the "exceptionally fast" part primarily comes from it simply not…
  remon on HN
Lacks error messages and input validation
From 2 comments
- Under "Non-features that won't be added" it says > No validation of inputs or helpful error messages - study the examples, read the docs. I agree that validation is probably…
  gitgud on HN
- > no one is paying me to write extra code (or any code, really) Fair enough, I understand the mentality, it's not easy developing and maintaining packages in your spare time...…
  gitgud on HN
Documentation is missing or not linked from readme
From 1 comment
- > read the docs I would read them if they were linked from the readme :)
  tiborsaas on HN
Touch zoom does not work on mobile
From 1 comment
- Zooming on my mobile (Chrome) works for dygraphs, but not for uPlot.js. I tried the benchmark example and it doesn't zoom in for me. The other ,,example and API'' demo doesn't…
  xiphias2 on HN

Synced crosshairs across multiple charts
From 2 comments
- Would it be possible to have 2 charts with synced crosshairs on this? I have a little open-source application that grabs stats from Elixir nodes and its plotting library is…
  sb8244 on HN
- Nice, I'm looking forward to trying it out!
  sb8244 on HN
Support for SVG output
From 1 comment
- Will you add SVG support?
  NetOpWibby on HN
Candlestick (OHLC) series support
From 1 comment
- Can it draw candlestick (OHLC) series?
  qwerty456127 on HN
Streaming high frequency data support
From 1 comment
- Awesome!! It's been disheartening to see flotjs (which was essentially unmaintained for 5 years) still beat out scores of other charting libraries in terms of raw speed. Over the…
  seanlaff on HN

What mechanism makes it fast
From 1 comment
- Can you state what's the mechanism that makes it fast? Is this a breakthrough in rendering optimizations or does it introduce smarter data structures? Or is it an accumulation of…
  dbranes on HN
How it compares to d3.js
From 1 comment
- How does this compare to d3.js? I'm surprised to not see it included in the benchmark comparison table.
  catacombs on HN

Flot
From 2 comments
- > Awesome!! It's been disheartening to see flotjs (which was essentially unmaintained for 5 years) still beat out scores of other charting libraries in terms of raw speed. i…
  leeoniya on HN
- i tested Flot [1] locally and got 351ms/45MB heap vs 45ms/20MB heap for uPlot on this machine. (the numbers in the readme are from another machine that's maybe 20% slower). i'll…
  leeoniya on HN
Dygraphs
From 2 comments
- Zooming on my mobile (Chrome) works for dygraphs, but not for uPlot.js. I tried the benchmark example and it doesn't zoom in for me. The other ,,example and API'' demo doesn't…
  xiphias2 on HN
- i had a prototype using https://github.com/mourner/simplify-js and it did a bit better in low quality/low precision mode, but worse in high quality mode. at some point the…
  leeoniya on HN
Vega
From 1 comment
- Awesome!! It's been disheartening to see flotjs (which was essentially unmaintained for 5 years) still beat out scores of other charting libraries in terms of raw speed. Over the…
  seanlaff on HN
ECharts
From 1 comment
- ECharts has been added.
  leeoniya on HN
d3.js
From 1 comment
- How does this compare to d3.js? I'm surprised to not see it included in the benchmark comparison table.
  catacombs on HN