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162<script type="module"> 163 164import {define} from "./_observablehq/client.3724cce3.js"; 165import {registerFile} from "./_observablehq/stdlib.277aeab8.js"; 166 167registerFile("./data/countries-110m.json", {"name":"./data/countries-110m.json","mimeType":"application/json","path":"./_file/data/countries-110m.2516c915.json","lastModified":1781592820174,"size":107761}); 168 169define({id: "16cb3338", inputs: ["FileAttachment","topojson"], outputs: ["world","land"], body: async (FileAttachment,topojson) => { 170const world = await FileAttachment("./data/countries-110m.json").json(); 171const land = topojson.feature(world, world.objects.land); 172return {world,land}; 173}}); 174 175define({id: "44e52ee5", inputs: ["DOMParser"], outputs: ["getRecentMastodonUrl","urls"], body: async (DOMParser) => { 176async function getRecentMastodonUrl() { 177 const recentReq = await fetch("https://m.wingu.se/@winguse.rss"); 178 const recentXml = await recentReq.text(); 179 const parser = new DOMParser(); 180 const doc = parser.parseFromString(recentXml, "application/xml"); 181 return [...doc.querySelectorAll("item link")].map((x) => x.textContent); 182} 183const urls = await getRecentMastodonUrl(); 184document.querySelector("iframe.mastodon-embed").src = urls[0] + "/embed"; 185return {getRecentMastodonUrl,urls}; 186}}); 187 188define({id: "4bd61aeb", inputs: ["view","Inputs"], outputs: ["longitude","latitude"], body: (view,Inputs) => { 189const longitude = view( 190 Inputs.range([-180, 180], { 191 label: "longitude", 192 step: 1, 193 value: 180, 194 }) 195); 196const latitude = view( 197 Inputs.range([-90, 90], { 198 label: "longitude", 199 step: 1, 200 value: 30, 201 }) 202); 203return {longitude,latitude}; 204}}); 205 206define({id: "f04c4322", outputs: ["zhaoqing0","changchun","beijing","zhaoqing1","sunnyvale","seattle","visited"], body: () => { 207const zhaoqing0 = { 208 longitude: 112.46, 209 latitude: 23.04, 210 weight: 19, 211}; 212const changchun = { 213 longitude: 125.32, 214 latitude: 43.81, 215 weight: 4, 216}; 217const beijing = { 218 longitude: 116.4, 219 latitude: 39.9, 220 weight: 6, 221}; 222const zhaoqing1 = { 223 longitude: 112.46, 224 latitude: 23.04, 225 weight: 2, 226}; 227const sunnyvale = { 228 longitude: -122.03, 229 latitude: 37.36, 230 weight: 2, 231}; 232const seattle = { 233 longitude: -122.3, 234 latitude: 47.6, 235 weight: (new Date()).getFullYear() - 2023, 236}; 237const visited = [zhaoqing0, changchun, beijing, zhaoqing1, sunnyvale, seattle]; 238visited.forEach((v) => (v.weight = Math.log(Math.log(v.weight)))); 239return {zhaoqing0,changchun,beijing,zhaoqing1,sunnyvale,seattle,visited}; 240}}); 241 242define({id: "6b6f21db", inputs: ["visited","display","Plot","longitude","latitude","land"], outputs: ["metros","distance"], body: (visited,display,Plot,longitude,latitude,land) => { 243const metros = []; 244 245for (let i = 1; i < visited.length; i++) { 246 metros.push({ 247 longitude1: visited[i - 1].longitude, 248 latitude1: visited[i - 1].latitude, 249 longitude2: visited[i].longitude, 250 latitude2: visited[i].latitude, 251 }); 252} 253 254function distance({ longitude1, latitude1, longitude2, latitude2 }) { 255 const long = longitude1 - longitude2; 256 const lat = latitude1 - latitude2; 257 return Math.sqrt(long * long + lat * lat); 258} 259 260display( 261 Plot.plot({ 262 projection: { type: "orthographic", rotate: [-longitude, -latitude] }, 263 r: { transform: (d) => Math.pow(10, d) }, // convert Richter to amplitude 264 style: "overflow: visible;", // allow dots to escape 265 marks: [ 266 Plot.geo(land, { fill: "currentColor", fillOpacity: 0.2 }), 267 Plot.sphere(), 268 Plot.dot(visited, { 269 x: "longitude", 270 y: "latitude", 271 r: "weight", 272 stroke: "red", 273 fill: "red", 274 fillOpacity: 0.2, 275 }), 276 Plot.link(metros, { 277 x1: "longitude1", 278 y1: "latitude1", 279 x2: "longitude2", 280 y2: "latitude2", 281 // stroke: distance, 282 markerEnd: "arrow", 283 }), 284 ], 285 }) 286); 287return {metros,distance}; 288}}); 289 290</script>
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302 303 <ol> 304 <li class="observablehq-link"><a href="./about.html">About</a></li> 305 </ol> 306 <details open> 307 <summary>2026</summary> 308 <ol> 309 <li class="observablehq-link"><a href="./2026/06/14/hawaii.html">å¤å¨å¤·æµæ°´è´¦</a></li> 310 <li class="observablehq-link"><a href="./2026/01/02/location-tracking-solution.html">æ¢äºä½ç½®æ¶é´çº¿å·¥å ·</a></li> 311 </ol> 312 </details> 313 <details> 314 <summary>2024</summary> 315 <ol> 316 <li class="observablehq-link"><a href="./2024/10/16/podman-compose-bridge-network.html">å¨macOSä¸è®¾ç½®Podmanèææºæ¡¥æ¥ç½ç»ï¼éæ¥æå</a></li> 317 </ol> 318 </details> 319 <details> 320 <summary>2023</summary> 321 <ol> 322 <li class="observablehq-link"><a href="./2023/11/30/only-apple-can-do-allow-apps-tracking-users-location-without-consensus.html">è¹æå 许åºç¨ç¨åºå¨æªç»ææçæ åµä¸è¿½è¸ªç¨æ·ä½ç½®</a></li> 323 <li class="observablehq-link"><a href="./2023/11/18/import-gpg-key-from-yubikey.html">ä» YubiKey ä¸å¯¼å ¥ GPG public key</a></li> 324 <li class="observablehq-link"><a href="./2023/04/21/dnat-source-in-source-out.html">DNAT ä¿ç客æ·ç«¯ IP ä¸æºè¿æºåº</a></li> 325 </ol> 326 </details> 327 <details> 328 <summary>2021</summary> 329 <ol> 330 <li class="observablehq-link"><a href="./2021/07/29/networking.html">å®å ¨ä¸ç½çè¿·æ</a></li> 331 <li class="observablehq-link"><a href="./2021/07/18/da-tong.html">大åçå¨æ«</a></li> 332 <li class="observablehq-link"><a href="./2021/06/14/xiaomi.html">å°ç±³ 11 Pro æè ¾ç¬è®°</a></li> 333 <li class="observablehq-link"><a href="./2021/02/06/clubhouse.html">Clubhouse ä½éª</a></li> 334 </ol> 335 </details> 336 <details> 337 <summary>2020</summary> 338 <ol> 339 <li class="observablehq-link"><a href="./2020/06/13/some-random-words.html">æ¥å¸¸å å¨</a></li> 340 </ol> 341 </details> 342 <details> 343 <summary>2019</summary> 344 <ol> 345 <li class="observablehq-link"><a href="./2019/08/25/Hong_Kong_anti-extradition_bill_protests.html">é¦æ¸¯çå对ãéç¯æ¡ä¾ã修订èæ¡è¿å¨</a></li> 346 </ol> 347 </details> 348 <details> 349 <summary>2018</summary> 350 <ol> 351 <li class="observablehq-link"><a href="./2018/10/30/economic-reasoning.html">ç»æµæ¨¡åæ¼ç»</a></li> 352 <li class="observablehq-link"><a href="./2018/03/11/wireguard.html">Wireguard é ç½®æå</a></li> 353 <li class="observablehq-link"><a href="./2018/03/11/openwrt-usb-wifi-wireguard-ipset-dnsmasq-iptables-route.html">Open WRT / Wireguard / IPSet / Route</a></li> 354 <li class="observablehq-link"><a href="./2018/02/23/block-chain-learning.html">åºåé¾ä¸ç¹æè</a></li> 355 </ol> 356 </details> 357 <details> 358 <summary>2017</summary> 359 <ol> 360 <li class="observablehq-link"><a href="./2017/09/24/jimei-software-engineer-homework-1-summary.html">éç¾å¤§å¦è½¯ä»¶å·¥ç¨å©æ第ä¸æ¬¡ä½ä¸å°ç»</a></li> 361 <li class="observablehq-link"><a href="./2017/08/31/dependency-injection-in-scala.html">Scala çåå°ä¾èµæ³¨å ¥</a></li> 362 <li class="observablehq-link"><a href="./2017/07/31/bathroom-thought.html">浴室æ²æ</a></li> 363 <li class="observablehq-link"><a href="./2017/04/22/free-of-charge-is-the-most-expensive.html">å è´¹çï¼ææ¯æè´µçï¼ä¸è½ä¾èµåä¸å ¬å¸</a></li> 364 <li class="observablehq-link"><a href="./2017/03/27/solution-to-meg-cap-problem-3.html">MegCup æ客ææèµç¬¬ä¸é¢</a></li> 365 <li class="observablehq-link"><a href="./2017/03/25/information-should-goes-freely.html">ä¿¡æ¯å°±åºè¯¥èªç±æµå¨</a></li> 366 <li class="observablehq-link"><a href="./2017/03/11/to-the-utopia.html">è´ä¹æé¦</a></li> 367 <li class="observablehq-link"><a href="./2017/02/26/high-dimensional-to-low-dimensional.html">é«ç»´ä¸ç对ä½ç»´å¹³é¢çæå½±</a></li> 368 </ol> 369 </details> 370 <details> 371 <summary>2016</summary> 372 <ol> 373 <li class="observablehq-link"><a href="./2016/11/13/trip-2-us.html">2016-10 æ¹¾åºçä¸å¨</a></li> 374 <li class="observablehq-link"><a href="./2016/10/07/trip-to-xinjiang.html">æ°çå¾æ¥</a></li> 375 <li class="observablehq-link"><a href="./2016/05/16/useless-social.html">æ æ社交</a></li> 376 </ol> 377 </details> 378 <details> 379 <summary>2015</summary> 380 <ol> 381 <li class="observablehq-link"><a href="./2015/09/08/brain-storm.html">头èé£æ´</a></li> 382 </ol> 383 </details> 384 <details> 385 <summary>2014</summary> 386 <ol> 387 <li class="observablehq-link"><a href="./2014/07/19/partition.html">æ°è®ºåPartitionçç¥</a></li> 388 </ol> 389 </details> 390 <details> 391 <summary>2012</summary> 392 <ol> 393 <li class="observablehq-link"><a href="./2012/12/15/k-th.html">第kæ°ä¸é¢</a></li> 394 <li class="observablehq-link"><a href="./2012/08/29/possibilities.html">ä»ä¸ä¸ªä¸å¹³åæ¦çåå¸è·å¾ä¸ä¸ªå¹³åçæ¦çåå¸</a></li> 395 <li class="observablehq-link"><a href="./2012/06/22/genetic-algorithm.html">å°è¯éä¼ ç®æ³</a></li> 396 <li class="observablehq-link"><a href="./2012/05/19/Bipartite-graph.html">äºåå¾ä¸é¢</a></li> 397 <li class="observablehq-link"><a href="./2012/03/08/shortest-path.html">æçè·¯ä¸é¢</a></li> 398 <li class="observablehq-link"><a href="./2012/02/09/thoughts.html">å°æ触</a></li> 399 </ol> 400 </details> 401 <details> 402 <summary>2011</summary> 403 <ol> 404 <li class="observablehq-link"><a href="./2011/11/21/data-you-send-in-http-request.html">ä»å¼åè çè§åº¦ï¼å½ä½ æå¼ç½é¡µçæ¶åï¼ä½ æ交äºä»ä¹</a></li> 405 <li class="observablehq-link"><a href="./2011/10/20/cmd-help-generator.html">CMDå½ä»¤å¸®å©çæ</a></li> 406 </ol> 407 </details> 408 <details> 409 <summary>2010</summary> 410 <ol> 411 <li class="observablehq-link"><a href="./2010/12/01/the-maximum-bipartite-matching-problem-poj-1422.html">äºåå¾æ大å¹é 模æ¿</a></li> 412 <li class="observablehq-link"><a href="./2010/09/11/number-of-stack-pop-catalan_number.html">
412åºæ æ°éé®é¢ï¼å¡å¡å °æ°ï¼</a></li> 413 <li class="observablehq-link"><a href="./2010/08/28/internet-sharing-1-access.html">ç½ç»å ±äº«é£äºäº(ä¸)ââå ±äº«ä¸ç½</a></li> 414 <li class="observablehq-link"><a href="./2010/08/27/3-141592-pi-big-number-calculation.html">计ç®åå¨ççå°ç¨åº_é«ç²¾åº¦ç®æ³ç»ä¹ </a></li> 415 <li class="observablehq-link"><a href="./2010/08/25/sudoku-poj-2676-cpp-html-javascript-css.html">æåæ°ç¬ââä»POJ2676说起</a></li> 416 </ol> 417 </details> 418</nav>
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