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Fall Foliage: JavaScript/OJS Edition – Security Boulevard

learningcode_x1mckf by learningcode_x1mckf
September 10, 2022
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Fall Foliage: JavaScript/OJS Edition – Security Boulevard
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I’ve been (largely) maintaining with annual updates for my R/sf U.S. foliage post which you could find on GH. This 12 months, we’ve got Quarto, and it comes with so many batteries included that you just’d assume it was Christmas. A type of batteries is full assist for the Observable runtime. These are utilized in ojs Quarto blocks, and rendered variations can run wherever.

The Observable platform is nice for each tinkering and publishing (we’re utilizing it at work for some fast or experimental vis work), and with a couple of of the latest posts, right here, exhibiting how you can flip Observable notebooks into Quarto paperwork, you’re actually two clicks or one command line away from utilizing any public Observable pocket book proper in Quarto.

AppSec/API Security 2022

I made a model of the foliage vis in Observable after which did the qmd conversion utilizing the Chrome extension, tweaked the supply a bit and revealed the identical in Quarto.

The interactive datavis makes use of some foundational Observable/D3 libraries:

Within the JS code we set some datavis-centric values:

foliage_levels = [0.01, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6]
foliage_colors = ["#83A87C", "#FCF6B4", "#FDCC5C", "#F68C3F", "#EF3C23", "#BD1F29", "#98371F"]
foliage_labels = ["No Change", "Minimal", "Patchy", "Partial", "Near Peak", "Peak", "Past Peak"]
week_label = ["Sept 5th", "Sept 12th", "Sept 19th", "Sept 26th", "Oct 3rd", "Oct 10th", "Oct 17th", "Oct 24th", "Oct 31st", "Nov 7th", "Nov 14th", "Nov 21st"]

We then borrow the U.S. Albers-projected topojson file from the Choropleth instance pocket book and rebuild the define mesh and county geometry collections, since we have to eliminate Alaska and Hawaii (they’re not current within the supply knowledge). We do that by filtering out two FIPS codes:

counties = 
  var cty = topojson.function(us, us.objects.counties);
  cty.options = cty.options.filter(
    (d) => (d.id.substr(0, 2) != "02") & (d.id.substr(0, 2) != "15")
  );
  return cty;

I additionally ended up modifying the supply CSV a bit to account for lacking counties.

After that, it was a simple name to our imported Choropleth operate:

chart = Choropleth(rendered2022, 
  id: (d) => d.id.toString().padStart(5, "0"), // that is wanted because the CSV id column is numeric
  worth: (d) => d[week_label.indexOf(week) + 1], // this will get the foliage worth based mostly on which index the chosen week is at
  scale: d3.scaleLinear, // this says to map foliage_levels to foliage_colors immediately
  area: foliage_levels,
  vary: foliage_colors,
  title: (f, d) =>
    `$f.properties.identify, $statemap.get(f.id.slice(0, 2)).properties.identify`, // this makes the county hover textual content the county + state names
  options: counties, // that is the counties we modified
  borders: statemesh, // that is the statemesh
  width: 975,
  peak: 610
)

and inserting the legend and scrubbing slider.

The one actual distinction between the pocket book and qmd is the inclusion of the supply capabilities relatively than use Observable’s import (I’ve discovered that there’s a slight load delay for imports when community circumstances aren’t tremendous good and the inclusion of the supply — WITH copyrights — makes up for that).

I’ve arrange the Quarto venture in order that renders go to the docs/ listing, which makes it simple to publish as a GH web page.

FIN

Drop points on GH if something wants clarifying or fixing and go experiment! You may’t break something both on Observable or regionally that model management can’t repair (sure, Observable has model management!).

Some issues to contemplate modifying/including:

  • have a click on take you to a (selectable?) mapping service, so of us can get driving instructions
  • flip the hover textual content into a correct tooltip
  • pace up or decelerate the animation when ‘Play’ is tapped
  • use totally different colours
  • herald older datasets (see the foliage GH repo) and make a number of maps or let the person choose them or have them evaluate throughout years

*** It is a Safety Bloggers Community syndicated weblog from rud.is authored by hrbrmstr. Learn the unique submit at: https://rud.is/b/2022/09/09/fall-foliage-javascript-ojs-edition/



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