Files
cellxgene/client/__tests__/util/dataframe/histogram.test.ts
T
Bruce Martin 45cecad76a TS typing for Dataframe (#2382)
* initial TS typing

* first cut at Dataframe TS typing

* more Dataframe typing

* comments

* more Dataframe cleanup

* PR review fixes and improvements
2021-08-17 10:43:40 -07:00

97 lines
2.8 KiB
TypeScript

import * as Dataframe from "../../../src/util/dataframe";
describe("Dataframe column histogram", () => {
test("categorical by categorical", () => {
const df = new Dataframe.Dataframe(
[3, 3],
[["n1", "n2", "n3"], ["c1", "c2", "c3"], new Int32Array([0, 1, 2])],
null,
new Dataframe.KeyIndex(["name", "cat", "value"])
);
const h1 = df.col("cat").histogramCategoricalBy(df.col("name"));
expect(h1).toMatchObject(
new Map([
["n1", new Map([["c1", 1]])],
["n2", new Map([["c2", 1]])],
["n3", new Map([["c3", 1]])],
])
);
// memoized?
expect(df.col("cat").histogramCategoricalBy(df.col("name"))).toMatchObject(
h1
);
});
test("continuous by categorical", () => {
const df = new Dataframe.Dataframe(
[3, 3],
[["n1", "n2", "n3"], ["c1", "c2", "c3"], new Int32Array([0, 1, 2])],
null,
new Dataframe.KeyIndex(["name", "cat", "value"])
);
const h1 = df.col("value").histogramContinuousBy(3, [0, 2], df.col("name"));
expect(h1).toMatchObject(
new Map([
["n1", [1, 0, 0]],
["n2", [0, 1, 0]],
["n3", [0, 0, 1]],
])
);
// memoized?
expect(
df.col("value").histogramContinuousBy(3, [0, 2], df.col("name"))
).toMatchObject(h1);
});
test("categorical", () => {
const df = new Dataframe.Dataframe(
[3, 3],
[["n1", "n2", "n3"], ["c1", "c2", "c3"], new Int32Array([0, 1, 2])],
null,
new Dataframe.KeyIndex(["name", "cat", "value"])
);
const h1 = df.col("cat").histogramCategorical();
expect(h1).toMatchObject(
new Map([
["c1", 1],
["c2", 1],
["c3", 1],
])
);
// memoized?
expect(df.col("cat").histogramCategorical()).toMatchObject(h1);
});
test("continuous", () => {
const df = new Dataframe.Dataframe(
[3, 3],
[["n1", "n2", "n3"], ["c1", "c2", "c3"], new Int32Array([0, 1, 2])],
null,
new Dataframe.KeyIndex(["name", "cat", "value"])
);
const h1 = df.col("value").histogramContinuous(3, [0, 2]);
expect(h1).toMatchObject([1, 1, 1]);
// memoized?
expect(df.col("value").histogramContinuous(3, [0, 2])).toMatchObject(h1);
});
test("continuous thesholds correct", () => {
const vals = [0, 1, 9, 10, 11, 20, 99, 100];
const df = new Dataframe.Dataframe(
[8, 2],
[new Int32Array(vals), new Float32Array(vals)]
);
expect(df.col(0).histogramContinuous(5, [0, 100])).toEqual([5, 1, 0, 0, 2]);
expect(df.col(1).histogramContinuous(5, [0, 100])).toEqual([5, 1, 0, 0, 2]);
expect(df.col(0).histogramContinuous(2, [0, 10])).toEqual([2, 2]);
expect(df.col(0).histogramContinuous(10, [0, 100])).toEqual([
3, 2, 1, 0, 0, 0, 0, 0, 0, 2,
]);
});
});