Published
Edited
Sep 8, 2018
4 stars
projector = {
Day;
Fullscreen;
let
ctx = target.getContext('2d'),
d = new Date(2018, 0, Day),
p = s => ("00" + s).slice(-2),
map = document.querySelector("#map"),
ice = document.querySelector("#ice"),
smos = document.querySelector("#smos"),
trans = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7",
size = Fullscreen ? screen.height : width
;
mutable ymd = `${d.getUTCFullYear()}-${p(d.getUTCMonth() +1)}-${p(d.getUTCDate())}`;
ice.onerror = e => ice.src = trans;
smos.onerror = e => smos.src = trans;
//ctx.clearRect(0, 0, 1024, 1024);
ctx.drawImage(map, 0, 0, 1024, 1024);
ctx.drawImage(ice, 0, 0, 1024, 1024);
ctx.font = 'bold 24px monospace';
ctx.fillStyle = "#eee";
ctx.fillText(ymd, 20, 34);
ctx.strokeStyle = "red";
ctx.beginPath();
ctx.arc(mousePos.x, mousePos.y, 10, 0, 2 * Math.PI);
ctx.stroke();
//while (true) yield md`## ${ymd}`;
return md`## ${ymd}`;
}
tt = {
var
img = new Image(),
url = `https://noiv.pythonanywhere.com/cors/smos/2018/smos2-${ymd}.png`,
//url = `https://noiv.pythonanywhere.com/cors/smos/2018/smos2-2018-03-03.png`,
trans = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7'
;
return new Promise ( (resolve, reject) => {
img.width = 256;
img.crossOrigin = 'anonymous';
img.onload = () => resolve(img);
img.onerror = reject;
img.src = url;
})
.then( img => html`${img}` )
.catch( e => { console.log(e); img.src = trans; })
}
mutable mousePos = ({x: width / 2, y: width / 2, text: "lala"})
d3.select("#target")
/*
.on("mouseover", function (d, i) { console.log('over'); mutable mousePos.text = "over" })
.on("mouseout", function (d, i) { console.log('out'); mutable mousePos.text = "out"})
.on("mouseenter", function (d, i) { console.log('enter'); mutable mousePos.text = "enter"})
.on("mouseleave", function (d, i) { console.log('leave'); mutable mousePos.text = "leave"})
.on("mousemove", function (d, i) { console.log('move', d, i, d3.mouse(this)); let m = d3.mouse(this); mutable mousePos = {x: m[0], y: m[1], text: "move"}})
*/
.on("wheel", function (d, i) { console.log('move', d, i, d3.mouse(this)); viewof Day.value += (d3.event.wheelDelta > 0 ? -1 : 1); d3.event.preventDefault(); })
target = {
let
ctx, cvs,
size = Fullscreen ? screen.height : width,
factor = 1024 / size,
listener = function (e) {
//viewof Day.value += (e.deltaY > 0 ? 1 : -1);
//e.preventDefault();
}
;
if (!this) {
cvs = DOM.context2d(1024, 1024, 1).canvas;
cvs.id = "target";
/*
cvs.onmousemove = (e) => {
mutable mousePos = {
x: Math.floor(e.offsetX * factor) ,
y: Math.floor(e.offsetY * factor)
};
}
addWheelListener(cvs, listener);
*/
}
(cvs || this).style.width = `${size}px`;
(cvs || this).style.height = `${size}px`;
while (true) yield (cvs || this);
}
second = vegalite({
// https://vega.github.io/vega/docs/schemes/#reference
title: 'Arctic',
width: width * 0.7,
autosize: "fit",
// ...(false && { autosize: "fit" }),
height: 300,
mark: "line",
data: {values: data_1},
transform: [
{ calculate: "datum.extent / 1000000", as: "mextent"},
{ filter: { field: "year", gt: 2010} }
],
encoding: {
x: {
field: "index", type: "ordinal", //timeUnit: 'yearmonth',
axis: {title: 'Years 2002 to 2018', tickCount: 12 }
},
y: {
field: "mextent", type: "quantitative",
axis: {title: 'Sea Ice Extent (mkm²)', tickCount: 21 },
//scale: {"zero": false}
},
color: { field: "year", type: "nominal", scale: { scheme: "dark2"}}
}
})
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