Add more options for distribution charts

Changing title, color, tick format, and domain

packages/components/src/components/DistributionChart.tsx

@@ -5,18 +5,15 @@ import {
   distributionError,
   distributionErrorToString,
 } from "@quri/squiggle-lang";
-import { Vega, VisualizationSpec } from "react-vega";
-import * as chartSpecification from "../vega-specs/spec-distributions.json";
+import { Vega } from "react-vega";
 import { ErrorAlert } from "./Alert";
 import { useSize } from "react-use";
 import clsx from "clsx";
 
 import {
-  linearXScale,
-  logXScale,
-  linearYScale,
-  expYScale,
-} from "./DistributionVegaScales";
+  buildVegaSpec,
+  DistributionChartSpecOptions,
+} from "../lib/distributionSpecBuilder";
 import { NumberShower } from "./NumberShower";
 
 export type DistributionPlottingSettings = {
@@ -24,27 +21,26 @@ export type DistributionPlottingSettings = {
   showSummary: boolean;
   /** Whether to show the user graph controls (scale etc) */
   showControls: boolean;
-  /** Set the x scale to be logarithmic by deault */
-  logX: boolean;
-  /** Set the y scale to be exponential by deault */
-  expY: boolean;
-};
+} & DistributionChartSpecOptions;
 
 export type DistributionChartProps = {
   distribution: Distribution;
   width?: number;
   height: number;
+  actions?: boolean;
 } & DistributionPlottingSettings;
 
-export const DistributionChart: React.FC<DistributionChartProps> = ({
-  distribution,
-  height,
-  showSummary,
-  width,
-  showControls,
-  logX,
-  expY,
-}) => {
+export const DistributionChart: React.FC<DistributionChartProps> = (props) => {
+  const {
+    distribution,
+    height,
+    showSummary,
+    width,
+    showControls,
+    logX,
+    expY,
+    actions = false,
+  } = props;
   const [isLogX, setLogX] = React.useState(logX);
   const [isExpY, setExpY] = React.useState(expY);
 
@@ -64,7 +60,7 @@ export const DistributionChart: React.FC<DistributionChartProps> = ({
     const massBelow0 =
       shape.value.continuous.some((x) => x.x <= 0) ||
       shape.value.discrete.some((x) => x.x <= 0);
-    const spec = buildVegaSpec(isLogX, isExpY);
+    const spec = buildVegaSpec(props);
 
     let widthProp = width ? width : size.width;
     if (widthProp < 20) {
@@ -82,7 +78,7 @@ export const DistributionChart: React.FC<DistributionChartProps> = ({
             data={{ con: shape.value.continuous, dis: shape.value.discrete }}
             width={widthProp - 10}
             height={height}
-            actions={false}
+            actions={actions}
           />
         ) : (
           <ErrorAlert heading="Log Domain Error">
@@ -116,16 +112,6 @@ export const DistributionChart: React.FC<DistributionChartProps> = ({
   return sized;
 };
 
-function buildVegaSpec(isLogX: boolean, isExpY: boolean): VisualizationSpec {
-  return {
-    ...chartSpecification,
-    scales: [
-      isLogX ? logXScale : linearXScale,
-      isExpY ? expYScale : linearYScale,
-    ],
-  } as VisualizationSpec;
-}
-
 interface CheckBoxProps {
   label: string;
   onChange: (x: boolean) => void;

packages/components/src/components/SquiggleChart.tsx

@@ -41,6 +41,18 @@ export interface SquiggleChartProps {
   logX?: boolean;
   /** Set the y scale to be exponential by deault */
   expY?: boolean;
+  /** How to format numbers on the x axis */
+  tickFormat?: string;
+  /** Title of the graphed distribution */
+  title?: string;
+  /** Color of the graphed distribution */
+  color?: string;
+  /** Specify the lower bound of the x scale */
+  minX?: number;
+  /** Specify the upper bound of the x scale */
+  maxX?: number;
+  /** Whether to show vega actions to the user, so they can copy the chart spec */
+  distributionChartActions?: boolean;
 }
 
 const defaultOnChange = () => {};
@@ -60,6 +72,12 @@ export const SquiggleChart: React.FC<SquiggleChartProps> = ({
   logX = false,
   expY = false,
   chartSettings = defaultChartSettings,
+  tickFormat,
+  minX,
+  maxX,
+  color,
+  title,
+  distributionChartActions,
 }) => {
   const { result } = useSquiggle({
     code: squiggleString,
@@ -78,6 +96,12 @@ export const SquiggleChart: React.FC<SquiggleChartProps> = ({
     showSummary,
     logX,
     expY,
+    format: tickFormat,
+    minX,
+    maxX,
+    color,
+    title,
+    actions: distributionChartActions,
   };
 
   return (

packages/components/src/lib/distributionSpecBuilder.ts

@@ -0,0 +1,256 @@
+import { VisualizationSpec } from "react-vega";
+import type { LogScale, LinearScale, PowScale } from "vega";
+
+export type DistributionChartSpecOptions = {
+  /** Set the x scale to be logarithmic by deault */
+  logX: boolean;
+  /** Set the y scale to be exponential by deault */
+  expY: boolean;
+  /** The minimum x coordinate shown on the chart */
+  minX?: number;
+  /** The maximum x coordinate shown on the chart */
+  maxX?: number;
+  /** The color of the chart */
+  color?: string;
+  /** The title of the chart */
+  title?: string;
+  /** The formatting of the ticks */
+  format?: string;
+};
+
+export let linearXScale: LinearScale = {
+  name: "xscale",
+  clamp: true,
+  type: "linear",
+  range: "width",
+  zero: false,
+  nice: false,
+  domain: {
+    fields: [
+      {
+        data: "con",
+        field: "x",
+      },
+      {
+        data: "dis",
+        field: "x",
+      },
+    ],
+  },
+};
+export let linearYScale: LinearScale = {
+  name: "yscale",
+  type: "linear",
+  range: "height",
+  zero: false,
+  domain: {
+    fields: [
+      {
+        data: "con",
+        field: "y",
+      },
+      {
+        data: "dis",
+        field: "y",
+      },
+    ],
+  },
+};
+
+export let logXScale: LogScale = {
+  name: "xscale",
+  type: "log",
+  range: "width",
+  zero: false,
+  base: 10,
+  nice: false,
+  clamp: true,
+  domain: {
+    fields: [
+      {
+        data: "con",
+        field: "x",
+      },
+      {
+        data: "dis",
+        field: "x",
+      },
+    ],
+  },
+};
+
+export let expYScale: PowScale = {
+  name: "yscale",
+  type: "pow",
+  exponent: 0.1,
+  range: "height",
+  zero: false,
+  nice: false,
+  domain: {
+    fields: [
+      {
+        data: "con",
+        field: "y",
+      },
+      {
+        data: "dis",
+        field: "y",
+      },
+    ],
+  },
+};
+
+export function buildVegaSpec(
+  specOptions: DistributionChartSpecOptions
+): VisualizationSpec {
+  let {
+    format = ".9~s",
+    color = "#739ECC",
+    title,
+    minX,
+    maxX,
+    logX,
+    expY,
+  } = specOptions;
+
+  let xScale = logX ? logXScale : linearXScale;
+  if (minX !== undefined) {
+    xScale = { ...xScale, domainMin: minX };
+  }
+
+  if (maxX !== undefined) {
+    xScale = { ...xScale, domainMax: maxX };
+  }
+
+  let spec: VisualizationSpec = {
+    $schema: "https://vega.github.io/schema/vega/v5.json",
+    description: "A basic area chart example",
+    width: 500,
+    height: 100,
+    padding: 5,
+    data: [
+      {
+        name: "con",
+      },
+      {
+        name: "dis",
+      },
+    ],
+    signals: [],
+    scales: [xScale, expY ? expYScale : linearYScale],
+    axes: [
+      {
+        orient: "bottom",
+        scale: "xscale",
+        labelColor: "#727d93",
+        tickColor: "#fff",
+        tickOpacity: 0.0,
+        domainColor: "#fff",
+        domainOpacity: 0.0,
+        format: format,
+        tickCount: 10,
+      },
+    ],
+    marks: [
+      {
+        type: "area",
+        from: {
+          data: "con",
+        },
+        encode: {
+          update: {
+            interpolate: { value: "linear" },
+            x: {
+              scale: "xscale",
+              field: "x",
+            },
+            y: {
+              scale: "yscale",
+              field: "y",
+            },
+            y2: {
+              scale: "yscale",
+              value: 0,
+            },
+            fill: {
+              value: color,
+            },
+            fillOpacity: {
+              value: 1,
+            },
+          },
+        },
+      },
+      {
+        type: "rect",
+        from: {
+          data: "dis",
+        },
+        encode: {
+          enter: {
+            width: {
+              value: 1,
+            },
+          },
+          update: {
+            x: {
+              scale: "xscale",
+              field: "x",
+            },
+            y: {
+              scale: "yscale",
+              field: "y",
+            },
+            y2: {
+              scale: "yscale",
+              value: 0,
+            },
+            fill: {
+              value: "#2f65a7",
+            },
+          },
+        },
+      },
+      {
+        type: "symbol",
+        from: {
+          data: "dis",
+        },
+        encode: {
+          enter: {
+            shape: {
+              value: "circle",
+            },
+            size: [{ value: 100 }],
+            tooltip: {
+              signal: "datum.y",
+            },
+          },
+          update: {
+            x: {
+              scale: "xscale",
+              field: "x",
+            },
+            y: {
+              scale: "yscale",
+              field: "y",
+            },
+            fill: {
+              value: "#1e4577",
+            },
+          },
+        },
+      },
+    ],
+  };
+  if (title) {
+    spec = {
+      ...spec,
+      title: {
+        text: title,
+      },
+    };
+  }
+
+  return spec;
+}