3e:null 3f:["$","title",null,{"children":"ECV Connections - Snapshot 3 | Tim Day | Observable"}] 45:T185e,chords = { document.head.innerHTML+=styling; const width=512; const height=512; var canvas=DOM.canvas(width, height); var ctx=canvas.getContext('2d'); const fadeInTime=250.0; // Time (ms) for linear ramp to full focus const fadeOutTime=500.0; // Time (ms) for exponential decay fade out let frame; // Precompute label centres var ecvxys=[]; for (var i=0;i0) { ecvattns[i]=Math.min(1.0,ecvattns[i]+dt/fadeInTime); } else { ecvattns[i]*=Math.exp(-dt/fadeOutTime); } } // And for the links // Ramp up links from primary to secondary tagged ECVs for (var i=0;i0) { ecvlinkattns[i][j]=Math.min(1.0,ecvlinkattns[i][j]+dt/fadeInTime); } else { ecvlinkattns[i][j]*=Math.exp(-dt/fadeOutTime); } } }; // Now draw arcs according to their attention level for (var i=0;i1.0/256.0) { var gradient = ctx.createLinearGradient(x0,y0,x1,y1); gradient.addColorStop(0,groupcolours[ecvs[i].group]); gradient.addColorStop(1,groupcolours[ecvs[t].group]); ctx.globalAlpha=ecvlinkattns[i][j]; ctx.strokeStyle=gradient; ctx.lineWidth=2; ctx.beginPath(); ctx.moveTo(x0,y0); ctx.quadraticCurveTo(width*0.5,height*0.5,x1,y1); ctx.stroke(); } } ctx.globalAlpha=1.0; } // Draw labels for (var i=0;i cancelAnimationFrame(frame)); return canvas; } 46:T5e6,// ECV = Essential Climate Variable ecvs=[ {name:"aerosol",group:"atmospheric",links:["soil moisture","ozone","land cover","ocean colour","sea surface temperature","cloud","fire"]}, {name:"cloud",group:"atmospheric",links:["soil moisture","aerosol"]}, {name:"carbon\ndioxide",group:"atmospheric",links:["soil moisture","methane","land cover","fire"]}, {name:"methane",group:"atmospheric",links:["soil moisture","carbon dioxide","fire"]}, {name:"ozone",group:"atmospheric",links:["ocean colour","aerosol","fire"]}, {name:"fire",group:"terrestrial",links:["soil moisture","carbon dioxide","methane","ozone","aerosol","land cover","aerosol"]}, {name:"soil\nmoisture",group:"terrestrial",links:["sea level","carbon dioxide","methane","land cover","sea surface temperature","cloud","aerosol","fire"]}, {name:"land\ncover",group:"terrestrial",links:["soil moisture","carbon dioxide","aerosol","fire"]}, {name:"glaciers",group:"terrestrial",links:["glaciers","sea level","land cover"]}, {name:"ice sheets",group:"terrestrial",links:[]}, // No links!?! {name:"sea\nsurface\ntemperature",group:"oceanic",links:["soil moisture","sea level","ocean colour","cloud","aerosol","sea ice"]}, {name:"ocean colour",group:"oceanic",links:["sea level","ozone","sea surface temperature","aerosol"]}, {name:"sea level",group:"oceanic",links:["soil moisture","glaciers","ocean colour","sea surface temperature","sea ice"]}, {name:"sea ice",group:"oceanic",links:["sea level","sea surface temperature"]} ]47:[{"id":"d6c7abcd73d3681efde82e78253d718730a305c8d09e69dc349c6b08e701ab467f5d4a2c2c4466656bc088cf9cb9c395c0d8d6e40a33a7fdf8862a8ca762ed5d","href":"https://static.observableusercontent.com/files/d6c7abcd73d3681efde82e78253d718730a305c8d09e69dc349c6b08e701ab467f5d4a2c2c4466656bc088cf9cb9c395c0d8d6e40a33a7fdf8862a8ca762ed5d","name":"ECVlinks.png","type":"image/png","lastModified":1673991568900.845,"size":58411},{"id":"fafb4ea12cf6771bf6cfec26e20d43f598b8e58327fe4e5ec6e7583e51e775a531ac0399605110f206a4b8f64df3c7616a0bdaeafa2279436e375d958e955854","href":"https://static.observableusercontent.com/files/fafb4ea12cf6771bf6cfec26e20d43f598b8e58327fe4e5ec6e7583e51e775a531ac0399605110f206a4b8f64df3c7616a0bdaeafa2279436e375d958e955854","name":"notesstyle-bold-updatedtf.woff2","type":"font/woff2","lastModified":1673991568900.845,"size":11444}] 43:{"id":"4d11f39e372337bf","slug":null,"title":"ECV Connections - Snapshot 3","thumbnail":"e2afe445ed9c82b8dbe5263269a851e4e00651564d125451d4901d4826d9485b","access_level":"public","create_time":"$D2023-01-17T21:39:28.900Z","update_time":"$D2023-01-17T21:39:40.310Z","view_time":null,"first_public_time":"$D2023-01-17T21:39:28.900Z","has_unpublished_edits":null,"fork":{"id":"32d30ede47070702","slug":null,"title":"Climate Connections - WIP","owner":{"id":"1a92493b15781331","login":"timday","name":"Tim Day"}},"stars":1,"starred":false,"owner":{"type":"team","id":"1a92493b15781331","login":"timday","name":"Tim Day","avatar_url":"https://avatars-next.observableusercontent.com/99a72e9fffb4012ff78cd8b348469e0ff259b6b4fcdc29c529c9643b02c3507a","tier":"starter_2024","bio":"","following":false},"version":384,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"b1afb94c24c163d5","login":"timday","name":"Tim Day","avatar_url":"https://avatars-next.observableusercontent.com/99a72e9fffb4012ff78cd8b348469e0ff259b6b4fcdc29c529c9643b02c3507a","tier":null,"bio":"","following":false}],"members":[{"type":"individual","id":"b1afb94c24c163d5","login":"timday","name":"Tim Day","avatar_url":"https://avatars-next.observableusercontent.com/99a72e9fffb4012ff78cd8b348469e0ff259b6b4fcdc29c529c9643b02c3507a","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"ECV Connections - Snapshot 3","cells":[{"id":175,"value":"# ECV Connections - Snapshot 3 \n\nBased on what science team leaders say their data could usefully be compared with.\n\nOriginally collated in this matrix:","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":197,"value":"ecvlinks = FileAttachment(\"ECVlinks.png\").image()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":359,"value":"A more dynamic \"chord\" visualisation. 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