2c:["$","title",null,{"children":"GPA repair | Iris Artin | Observable"}] 31:T50b,{ let min_future_credits = Math.ceil(current_credits * (target_gpa - current_gpa) / (4 - target_gpa)) let max_future_credits = 3 * current_credits function* future_gpa() { for (let future_credits = min_future_credits; future_credits < max_future_credits + 1; ++future_credits) { yield { credits: future_credits, gpa: ((current_credits + future_credits) * target_gpa - current_credits * current_gpa) / future_credits }; } } return vl.layer( markGrades(vl.x, target_gpa, 4.0, max_future_credits), vl.markPoint().data([...future_gpa()]).transform( vl.calculate('round(datum.gpa * 1000) / 1000').as('future GPA'), vl.calculate('datum.credits').as('future credits'), vl.calculate(`${target_gpa}`).as('overall GPA') ).encode( vl.y().fieldQ('credits') .scale({domain: [min_future_credits, max_future_credits]}) .title(`Additional credits to ${target_gpa}`), vl.x().fieldQ('gpa') .sort('descending') .scale({domain: [target_gpa, 4]}) .title("GPA in future classes") .axis({orient: 'top', offset: 20}), vl.tooltip(['future credits', 'future GPA', 'overall GPA']) ), ) .width(width) .autosize({type: 'fit-x', contains: 'padding'}) .render() }32:T4ef,{ let min_future_credits = 0 let max_future_credits = 3 * current_credits function* future_gpa() { for (let future_credits = min_future_credits; future_credits < max_future_credits + 1; ++future_credits) { yield { credits: future_credits, gpa: (current_credits * current_gpa + future_credits * additional_gpa) / (current_credits + future_credits) }; } } return vl.layer( markGrades(vl.y, current_gpa, additional_gpa, 0), vl.markPoint() .data([...future_gpa()]) .transform( vl.calculate('round(datum.gpa * 1000) / 1000').as('overall GPA'), vl.calculate(`${additional_gpa}`).as('future GPA'), vl.calculate('datum.credits').as('future credits'), ).encode( vl.x().fieldQ('credits') .scale({domain: [min_future_credits, max_future_credits]}) .title(`Additional credits at ${additional_gpa} GPA`) .axis({orient: 'top'}), vl.y().fieldQ('gpa') .scale({domain: [current_gpa, additional_gpa]}) .title('Overall GPA') .axis({offset: 20}), vl.tooltip(['future credits', 'future GPA', 'overall GPA']) ), ) .width(width) .autosize({type: 'fit-x', contains: 'padding'}) .render() }33:T5ea,function markGrades(axis, min, max, cr) { let pm_offset = plusminus_delta < 0.5 ? 0 : 10 let metrics = {} if (axis === vl.x) { metrics.axis1 = vl.x metrics.axis2 = vl.y metrics.offset_p = { dx: pm_offset, dy: -20 } metrics.offset_0 = { dx: 0, dy: -20 } metrics.offset_m = { dx: -pm_offset, dy: -20 } } else { metrics.axis1 = vl.y metrics.axis2 = vl.x metrics.offset_p = { dy: pm_offset, dx: -10 } metrics.offset_0 = { dy: 0, dx: -10 } metrics.offset_m = { dy: -pm_offset, dx: -10 } } let data = grades .filter(grade => grade.value >= min && grade.value <= max) .map(val => Object({ value: val.value, label: val.label, cr: cr, pm: val.pm })) return vl.layer( vl.markRule().data(data).encode( metrics.axis1().fieldQ('value') .scale({domain: [min, max]}) ), vl.markText(metrics.offset_p).data( data ).transform( vl.filter("datum.pm > 0") ).encode( axis().fieldQ('value'), vl.text().fieldN('label'), metrics.axis2().fieldQ('cr') ), vl.markText(metrics.offset_m).data( data ).transform( vl.filter("datum.pm < 0") ).encode( axis().fieldQ('value'), vl.text().fieldN('label'), metrics.axis2().fieldQ('cr') ), vl.markText(metrics.offset_0).data( data ).transform( vl.filter("datum.pm == 0") ).encode( axis().fieldQ('value'), vl.text().fieldN('label'), metrics.axis2().fieldQ('cr') ), ) }34:[] 2f:{"id":"7f50a2cf7edb63cf","slug":"gpa-repair","title":"GPA repair","thumbnail":"838d8d774685cf2525e17421f5050f0cdb807c7b185b3efaf335593fb7832d6a","access_level":"public","create_time":"$D2020-02-28T04:05:11.107Z","update_time":"$D2020-03-22T19:00:09.520Z","view_time":null,"first_public_time":"$D2020-02-28T04:05:14.838Z","fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"f7eb604de06625ed","login":"innermatrix","name":"Iris Artin","avatar_url":"https://avatars-next.observableusercontent.com/781cf1ee03bb64ebe77f2c23cb2cf99cb5477757f4f5e8b778158428d5f71908","tier":"starter_2024"},"version":500,"publish_version":500,"role":null,"authored":false,"authors":[{"type":"individual","id":"eb2c49d0af58d6ef","login":"innermatrix","name":"Iris Artin","avatar_url":"https://avatars-next.observableusercontent.com/781cf1ee03bb64ebe77f2c23cb2cf99cb5477757f4f5e8b778158428d5f71908","tier":null}],"members":[{"type":"individual","id":"eb2c49d0af58d6ef","login":"innermatrix","name":"Iris Artin","avatar_url":"https://avatars-next.observableusercontent.com/781cf1ee03bb64ebe77f2c23cb2cf99cb5477757f4f5e8b778158428d5f71908","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"title":"GPA repair","cells":[{"id":0,"value":"md`# GPA repair`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":132,"value":"md`**Circumstances:** I have taken ${viewof current_credits.bind(html``)} credits of classes, and my GPA is ${viewof current_gpa.bind(html``)}.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":5,"value":"md`**Question:** How do I get my GPA to ${viewof target_gpa.bind(html``)}?`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":68,"value":"md`**Answer:** The lower your GPA in your future classes, the more additional credits you need to bring your GPA up. This is what that looks like if you're aiming for a ${target_gpa} overall GPA starting with ${current_credits} credits and a ${current_gpa} GPA:`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":86,"value":"$31","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":128,"value":"md`**Question:** If I maintain a ${viewof additional_gpa.bind(html``)} GPA in my future classes, how will my overall GPA improve?`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":143,"value":"md`**Answer:** As you take more and more classes, they make less and less of a difference for your overall GPA. This is what that looks like if you're starting with ${current_credits} credits and a ${current_gpa} GPA:`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":162,"value":"$32","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":146,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":445,"value":"md`## Grade point values`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":448,"value":"md`**A** grade point value is ${viewof a_value.bind(html``, )}. **A-** grade point value is ${viewof a_minus_value.bind(html``, )}. Others are calculated from those two.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":150,"value":"md`## The formula`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":154,"value":"tex`\\text{current credits} \\cdot \\text{current GPA} + \\text{future credits} \\cdot \\text{future GPA} = (\\text{current credits} + \\text{future credits}) \\cdot \\text{overall GPA}`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":25,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":159,"value":"md`## Innards`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":176,"value":"grades = [{\n label: \"A\",\n value: a_value,\n pm: 0\n}, {\n label: \"A-\",\n value: a_value - plusminus_delta,\n pm: -1\n}, {\n label: \"B+\",\n value: a_value - 1 + plusminus_delta,\n pm: +1\n}, {\n label: \"B\",\n value: a_value - 1,\n pm: 0\n}, {\n label: \"B-\",\n value: a_value - 1 - plusminus_delta,\n pm: -1\n}, {\n label: \"C+\",\n value: a_value - 2 + plusminus_delta,\n pm: +1\n}, {\n label: \"C\",\n value: a_value - 2,\n pm: 0\n}]","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":230,"value":"$33","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":7,"value":"viewof current_credits = new View(96)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":18,"value":"viewof current_gpa = new View(3.2)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":20,"value":"viewof target_gpa = new View(3.5)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":140,"value":"viewof additional_gpa = new View(3.7)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":454,"value":"viewof a_value = new View(4)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":457,"value":"viewof a_minus_value = new View(3.7)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":472,"value":"plusminus_delta = a_value - a_minus_value","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":36,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":40,"value":"html`\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":11,"value":"md`---`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":9,"value":"import {View} from \"@mbostock/synchronized-views\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":15,"value":"import {bind} from \"@mbostock/inline-inputs\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":87,"value":"import {vl} from '@vega/vega-lite-api'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W34","stdlib":"1","titling":"auto"}} 30:"$2f:body" 2b:E{"digest":"NEXT_REDIRECT;replace;/@innermatrix/gpa-repair;307;"}