2b:null 2c:["$","title",null,{"children":"Monte Carlo Introduction: Customer Service (unfinal) | Ron Smith | Observable"}] 31:T12be,{ console.clear(); svg.selectAll("*").remove(); // Initialize time and time step let t = 0; let dt = 0.005; svg.append("text") .attr("x", X(0.45)) .attr("y", -marg/4) .attr("font-size", 20) .attr("id", "curTime") .text("t = " + t.toFixed(3)); // Initialize customer and server queues let q = []; let nextArrival = 0; let customerID = 0; mutable nCustLost = 0; mutable nCustServ = 0; let s =[]; for (let n=0;n 0) { let openStation = getOpenStation(s); // Check if any service stations are open if (openStation > -1) { // Get the customer who has been waiting the longest and move to the service queue let cust = q.shift(); // Determine when their service will be done cust[3] = t+getServTime(); // Compute the position of the server window cust[0] = 0.05+(openStation*stationWidth); cust[1] = stationHeight/2; // Add customer to service array s[openStation] = cust; // Animate the transition svg.selectAll("[id=c" + cust[4] + "]") .transition() .duration(1000) .attr("cx", X(cust[0])) .attr("cy", Y(cust[1])) .attr("r", 15) .style("fill", "blue"); } } // Check for customers done getting service for (let n=0;n 0) { mutable nCustLost+=1; svg.selectAll("[id=c" + s[n][4] + "]") .transition() .duration(200) .attr("r", 50) .style("fill", "red") .transition() .remove(); s[n] = [-1,-1,Infinity,Infinity,-1]; } } yield(svg.node().parentNode) } }32:[] 2f:{"id":"cc9a47d634736b77","slug":"monte-carlo-introduction-customer-service","title":"Monte Carlo Introduction: Customer Service (unfinal)","thumbnail":"5527b0c2dcb01d974cb1ebea3fa9f9b2ea254b20b70586d6d07747d46d3e7426","access_level":"public","create_time":"$D2019-03-11T16:10:50.541Z","update_time":"$D2019-03-11T19:12:09.133Z","view_time":null,"first_public_time":"$D2019-03-11T17:37:38.709Z","fork":false,"stars":1,"starred":false,"owner":{"type":"team","id":"8dab63897b6adf13","login":"ronzor","name":"Ron Smith","avatar_url":"https://avatars-next.observableusercontent.com/72c20176307cf53407d67a22afcc4d7d49bbdd419afc85de1cf01fe8aa2e320f","tier":"starter_2024"},"version":238,"publish_version":238,"role":null,"authored":false,"authors":[{"type":"individual","id":"a5eeba816274b983","login":"ronzor","name":"Ron Smith","avatar_url":"https://avatars-next.observableusercontent.com/72c20176307cf53407d67a22afcc4d7d49bbdd419afc85de1cf01fe8aa2e320f","tier":null}],"members":[{"type":"individual","id":"a5eeba816274b983","login":"ronzor","name":"Ron Smith","avatar_url":"https://avatars-next.observableusercontent.com/72c20176307cf53407d67a22afcc4d7d49bbdd419afc85de1cf01fe8aa2e320f","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":4,"collection":null,"type":"notebook","body":{"title":"Monte Carlo Introduction: Customer Service (unfinal)","cells":[{"id":0,"value":"md`# Monte Carlo Introduction: *Customer Service* (unfinal)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":42,"value":"viewof Nservers = slider({\n min: 1, \n max: maxServers, \n step: 1, \n value: 1, \n title: md `Number of servers`\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":76,"value":"viewof aTime = slider({\n min: 0.1, \n max: 10, \n step: 0.1, \n value: 1, \n title: md `Average time between customer arrivals`\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":78,"value":"viewof sTime = slider({\n min: 1, \n max: 10, \n step: 0.1, \n value: 1, \n title: md `Average service time`\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":131,"value":"mutable nCustLost = 0;","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":139,"value":"mutable nCustServ = 0;","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":55,"value":"$31","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":67,"value":"function expRnd(mu) {\n // Generate an exponential random variable with expected value mu\n return -Math.log(Math.random())*mu;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":70,"value":"function getArrTime() {\n return expRnd(aTime); \n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":72,"value":"function getServTime() {\n return 1+expRnd(sTime);\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":74,"value":"function getWaitTime() {\n return 1+expRnd(2);\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":3,"value":"import {slider,d3,addCircle,MakeStandardAxes} from \"@ronzor/common\";","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":5,"value":"msa = MakeStandardAxes(0,1,\"none\",0,1,\"none\",height,width,{top:marg,bottom:marg,left:marg,right:marg},-1)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":31,"value":"svg = msa[0];","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":34,"value":"X = msa[1];","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":36,"value":"Y = msa[2];","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":7,"value":"marg=40;","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":9,"value":"height=500","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":11,"value":"width=800","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":45,"value":"maxServers = 10;","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":49,"value":"stationWidth = 1/maxServers;","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":51,"value":"stationHeight = 0.2","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":53,"value":"function stationStatus(n) {\n if (n