Add simple pareto front plot

optuna_dashboard/static/apiClient.ts

@@ -34,11 +34,17 @@ const convertTrialResponse = (res: TrialResponse): Trial => {
   }
 }
 
+const convertTrialResponseList = (res: TrialResponse[]): Trial[] => {
+    return res.map((trial): Trial => convertTrialResponse(trial))
+}
+
+
 interface StudyDetailResponse {
   name: string
   datetime_start: string
   directions: StudyDirection[]
   best_trial?: TrialResponse
+  best_trials?: TrialResponse[]
   trials: TrialResponse[]
 }
 
@@ -58,6 +64,9 @@ export const getStudyDetailAPI = (studyId: number): Promise<StudyDetail> => {
         best_trial: res.data.best_trial
           ? convertTrialResponse(res.data.best_trial)
           : undefined,
+        best_trials: res.data.best_trials
+          ? convertTrialResponseList(res.data.best_trials)
+          : undefined,
         trials: trials,
       }
     })

optuna_dashboard/static/components/GraphParetoFront.tsx

@@ -0,0 +1,60 @@
+import * as plotly from "plotly.js-dist"
+import React, { FC, useEffect } from "react"
+
+const plotDomId = "graph-pareto-front"
+
+export const GraphParetoFront: FC<{
+  study: StudyDetail | null
+}> = ({ study = null }) => {
+
+  useEffect(() => {
+    if (study != null) {
+      plotParetoFront(study)
+    }
+  }, [study])
+
+  return <div id={plotDomId} />
+}
+
+const plotParetoFront = (study: StudyDetail) => {
+  if (document.getElementById(plotDomId) === null) {
+    return
+  }
+
+  if (study.directions.length != 2) {
+    return
+  }
+
+  const layout: Partial<plotly.Layout> = {
+    title: "Pareto-front plot",
+    margin: {
+      l: 50,
+      r: 50,
+      b: 0,
+    },
+  }
+
+  const trials: Trial[] = (study !== null) && study.best_trials ? study.best_trials : []
+  console.log(study.best_trials)
+  console.log('length', trials.length)
+  if (trials.length === 0) {
+    plotly.react(plotDomId, [], layout)
+    return
+  }
+
+  const pointColors = Array(trials.length).fill("blue")
+
+  const plotData: Partial<plotly.PlotData>[] = [
+    {
+        type: "scatter",
+        x: trials.map((t: Trial): number => t.values![0]),
+        y: trials.map((t: Trial): number => t.values![1]),
+        mode: "markers",
+        marker: {
+          color: pointColors,
+        },
+    },
+  ]
+
+  plotly.react(plotDomId, plotData, layout)
+}

optuna_dashboard/static/components/StudyDetail.tsx

@@ -23,6 +23,7 @@ import { GraphParallelCoordinate } from "./GraphParallelCoordinate"
 import { GraphIntermediateValues } from "./GraphIntermediateValues"
 import { GraphSlice } from "./GraphSlice"
 import { GraphHistory } from "./GraphHistory"
+import { GraphParetoFront } from "./GraphParetoFront"
 import { actionCreator } from "../action"
 import { studyDetailsState } from "../state"
 
@@ -203,6 +204,13 @@ export const StudyDetail: FC = () => {
               </CardContent>
             </Card>
           ) : null}
+          {studyDetail !== null && !isSingleObjectiveStudy(studyDetail) ? (
+            <Card className={classes.card}>
+              <CardContent>
+                <GraphParetoFront study={studyDetail} />
+              </CardContent>
+            </Card>
+          ) : null}
           <Card className={classes.card}>
             <TrialTable studyDetail={studyDetail} />
           </Card>

optuna_dashboard/static/types/index.d.ts

@@ -54,6 +54,7 @@ declare interface StudyDetail {
   directions: StudyDirection[]
   datetime_start: Date
   best_trial?: Trial
+  best_trials?: Trial[]
   trials: Trial[]
 }