average ease + add % to ease ticks

rslib/ftl/statistics.ftl

@@ -183,15 +183,19 @@ statistics-due-tomorrow = Due tomorrow
 # eg 5 of 15 (33.3%)
 statistics-amount-of-total-with-percentage = { $amount } of { $total } ({ $percent }%)
 statistics-average-over-period = Average over period
-statistics-reviews-per-day = { $count ->
+statistics-reviews-per-day =
+    { $count ->
         [one] { $count } review/day
        *[other] { $count } reviews/day
     }
-statistics-minutes-per-day = { $count ->
+statistics-minutes-per-day =
+    { $count ->
         [one] { $count } minute/day
        *[other] { $count } minutes/day
     }
-statistics-cards-per-day = { $count ->
+statistics-cards-per-day =
+    { $count ->
         [one] { $count } card/day
        *[other] { $count } cards/day
     }
+statistics-average-ease = Average ease

ts/src/stats/EaseGraph.svelte

@@ -4,14 +4,17 @@
     import pb from "../backend/proto";
     import HistogramGraph from "./HistogramGraph.svelte";
     import { I18n } from "../i18n";
+    import { TableDatum } from "./graphs";
+    import TableData from "./TableData.svelte";
 
     export let sourceData: pb.BackendProto.GraphsOut | null = null;
     export let i18n: I18n;
 
     let histogramData = null as HistogramData | null;
+    let tableData: TableDatum[] = [];
 
     $: if (sourceData) {
-        histogramData = prepareData(gatherData(sourceData), i18n);
+        [histogramData, tableData] = prepareData(gatherData(sourceData), i18n);
     }
 
     const title = i18n.tr(i18n.TR.STATISTICS_CARD_EASE_TITLE);
@@ -24,4 +27,6 @@
     <div class="subtitle">{subtitle}</div>
 
     <HistogramGraph data={histogramData} {i18n} />
+
+    <TableData {i18n} {tableData} />
 </div>

ts/src/stats/ease.ts

@@ -7,12 +7,13 @@
  */
 
 import pb from "../backend/proto";
-import { extent, histogram } from "d3-array";
+import { extent, histogram, sum } from "d3-array";
 import { scaleLinear, scaleSequential } from "d3-scale";
 import { CardQueue } from "../cards";
 import { HistogramData } from "./histogram-graph";
 import { interpolateRdYlGn } from "d3-scale-chromatic";
 import { I18n } from "../i18n";
+import { TableDatum } from "./graphs";
 
 export interface GraphData {
     eases: number[];
@@ -25,11 +26,14 @@ export function gatherData(data: pb.BackendProto.GraphsOut): GraphData {
     return { eases };
 }
 
-export function prepareData(data: GraphData, i18n: I18n): HistogramData | null {
+export function prepareData(
+    data: GraphData,
+    i18n: I18n
+): [HistogramData | null, TableDatum[]] {
     // get min/max
     const allEases = data.eases;
     if (!allEases.length) {
-        return null;
+        return [null, []];
     }
     const total = allEases.length;
     const [_xMin, origXMax] = extent(allEases);
@@ -57,5 +61,16 @@ export function prepareData(data: GraphData, i18n: I18n): HistogramData | null {
         });
     }
 
-    return { scale, bins, total, hoverText, colourScale, showArea: false };
+    const xTickFormat = (num: number): string => `${num.toFixed(0)}%`;
+    const tableData = [
+        {
+            label: i18n.tr(i18n.TR.STATISTICS_AVERAGE_EASE),
+            value: xTickFormat(sum(allEases) / total),
+        },
+    ];
+
+    return [
+        { scale, bins, total, hoverText, colourScale, showArea: false, xTickFormat },
+        tableData,
+    ];
 }

ts/src/stats/histogram-graph.ts

@@ -28,6 +28,7 @@ export interface HistogramData {
     showArea: boolean;
     colourScale: ScaleSequential<string>;
     binValue?: (bin: Bin<any, any>) => number;
+    xTickFormat?: (d: any) => string;
 }
 
 export function histogramGraph(
@@ -50,7 +51,12 @@ export function histogramGraph(
     const x = data.scale.range([bounds.marginLeft, bounds.width - bounds.marginRight]);
     svg.select<SVGGElement>(".x-ticks")
         .transition(trans)
-        .call(axisBottom(x).ticks(7).tickSizeOuter(0));
+        .call(
+            axisBottom(x)
+                .ticks(7)
+                .tickSizeOuter(0)
+                .tickFormat((data.xTickFormat ?? null) as any)
+        );
 
     // y scale