Commit bf15db4a8db7ce393db6d6d77bdf953e4e78b13d - node-d3-shape

Put zero values at zero. Mike Bostock 4 years ago

3 changed file(s) with 20 addition(s) and 5 deletion(s). Raw diff Collapse all Expand all

-1

README.md less more

1133	1133
1134	1134	<a name="stackOffsetDiverging" href="#stackOffsetDiverging">#</a> d3.<b>stackOffsetDiverging</b>(<i>series</i>, <i>order</i>) · [Source](https://github.com/d3/d3-shape/blob/master/src/offset/diverging.js)
1135	1135
1136		Positive values are stacked above zero, while negative values are [stacked below zero](https://bl.ocks.org/mbostock/b5935342c6d21928111928401e2c8608).
	1136	Positive values are stacked above zero, negative values are [stacked below zero](https://bl.ocks.org/mbostock/b5935342c6d21928111928401e2c8608), and zero values are stacked at zero.
1137	1137
1138	1138	<a name="stackOffsetNone" href="#stackOffsetNone">#</a> d3.<b>stackOffsetNone</b>(<i>series</i>, <i>order</i>) · [Source](https://github.com/d3/d3-shape/blob/master/src/offset/none.js)
1139	1139

-2

src/offset/diverging.js less more

1	1	if (!((n = series.length) > 0)) return;
2	2	for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) {
3	3	for (yp = yn = 0, i = 0; i < n; ++i) {
4		if ((dy = (d = series[order[i]][j])[1] - d[0]) >= 0) {
	4	if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) {
5	5	d[0] = yp, d[1] = yp += dy;
6	6	} else if (dy < 0) {
7	7	d[1] = yn, d[0] = yn += dy;
8	8	} else {
9		d[0] = yp;
	9	d[0] = 0, d[1] = dy;
10	10	}
11	11	}
12	12	}

+17

-2

test/offset/diverging-test.js less more

15	15	test.end();
16	16	});
17	17
18		tape.only("stackOffsetDiverging(series, order) handles a single series", function(test) {
	18	tape("stackOffsetDiverging(series, order) handles a single series", function(test) {
19	19	var series = [
20	20	[[1, 2], [2, 4], [3, 4]]
21	21	];

37	37	series[1][1][1] = "NaN"; // can’t test.equal NaN
38	38	test.deepEqual(series, [
39	39	[[0, 1], [0, 2], [0, 1]],
40		[[1, 4], [2, "NaN"], [1, 3]],
	40	[[1, 4], [0, "NaN"], [1, 3]],
41	41	[[4, 9], [2, 4], [3, 7]]
42	42	]);
43	43	test.end();

72	72	]);
73	73	test.end();
74	74	});
	75
	76	tape("stackOffsetDiverging(series, order) puts zero values at zero, in order", function(test) {
	77	var series = [
	78	[[0, 1], [0, 2], [0, -1]],
	79	[[0, 3], [0, 0], [0, 0]],
	80	[[0, 5], [0, 2], [0, 4]]
	81	];
	82	shape.stackOffsetDiverging(series, shape.stackOrderNone(series));
	83	test.deepEqual(series, [
	84	[[0, 1], [0, 2], [-1, 0]],
	85	[[1, 4], [0, 0], [0, 0]],
	86	[[4, 9], [2, 4], [0, 4]]
	87	]);
	88	test.end();
	89	});