Published
Edited
Nov 23, 2020
md`# 9 занятие`
md`# Осадки в России`
import {vl} from "@vega/vega-lite-api"
import {city_humidity} from "@glebtr/lesson-9"
md`# Zoo`
zoo = { return await FileAttachment("zoo.csv").csv()}
animals = {
const selection1 =
vl.selectSingle()
.on("mouseover")
.empty('none')
.nearest(false)
;
let bars = vl.markBar()
.data(zoo)
.select(selection1)
.width(500)
.transform({fold: ["hair", "eggs", "feathers", "airborne", "aquatic", "predator", "toothed", "backbone", "milk"] , as: ["name" , "value"]})
.encode(
vl.color().value("#8D230F").if(selection1 , {value: "#1E434C"}),
vl.x().fieldN("name").axis({"labelAngle" : 0}).title(false),
vl.y().sum("value").title("Количество зверей").axis({"format" : "f"}),
vl.tooltip().sum("value")
)
return vl.vconcat(bars)
.render()
}
md`# Maps`
import {russia} from "@glebtr/lesson-9"
rmap = {
const selection =
vl.selectSingle()
.on("mouseover")
.empty("all")
.nearest(true)
const ru_map = vl.markGeoshape()
.width(600)
.height(400)
.data(russia.features)
.encode(
vl.color().value("#dbdcdd")
)
const cities = vl.markCircle()
.data(city_humidity)
.select(selection)
.encode(
vl.size().fieldQ("osadki_mm").title("Осадки, мм"),
vl.tooltip().fieldN("city"),
vl.longitude().fieldQ("Longitude"),
vl.latitude().fieldQ("Latitude"),
vl.color().value("gray").if(selection , {value: "#1c51bc"})
)
return vl.layer(ru_map , cities)
.view({stroke: "transparent"})
.project(
vl.projection("Albers")
.parallels([52,64])
.rotate([-105 , 0 ])
.center([-10,65])
).render()
}
import {capitals} from "@glebtr/lesson-9"
map ={
const selection4 =
vl.selectSingle()
.on("mouseover")
.empty("all")
.nearest(false)
const big_map = vl.markGeoshape()
.width(800)
.height(600)
.data(vl.topojson(world).feature('land'))
.select(selection4)
.encode(
vl.color().value("#c5dddd")
)
const centers = vl.markCircle()
.data(capitals)
.encode(
vl.size().fieldQ("pop_max").title("Население"),
vl.longitude().fieldQ("longitude"),
vl.latitude().fieldQ("latitude"),
vl.tooltip().fieldN("name-rus"),
vl.color().value("#1E434C").if(selection4, {value: "#8D230F"}),
)
return vl.layer(big_map , centers)
.view({stroke: "transparent"})
.project(
vl.projection("Mercator")
).render()
}
md`# Столицы мира`
world_capitals = {
const selection5 =
vl.selectSingle()
.on("mouseover")
.empty('none')
.nearest(false)
;
let capital = vl.markBar ()
.title("Столицы")
.data(capitals)
.select(selection5)
.transform(
{filter: "datum.pop_max>800"}
)
.encode(
vl.x().fieldQ("pop_max"),
vl.y().fieldN("name-rus").sort("-x"),
vl.tooltip().fieldQ("pop_max"),
vl.color().value("#008080").if(selection5 , {value: "#00FFFF"})
)
return vl.vconcat(capital)
.render()
}
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