59 lines
1.4 KiB
JavaScript
59 lines
1.4 KiB
JavaScript
|
import array from "./array.js";
|
||
|
|
import constant from "./constant.js";
|
||
|
|
import offsetNone from "./offset/none.js";
|
||
|
|
import orderNone from "./order/none.js";
|
||
|
|
|
||
|
|
function stackValue(d, key) {
|
||
|
|
return d[key];
|
||
|
|
}
|
||
|
|
|
||
|
|
function stackSeries(key) {
|
||
|
|
const series = [];
|
||
|
|
series.key = key;
|
||
|
|
return series;
|
||
|
|
}
|
||
|
|
|
||
|
|
export default function() {
|
||
|
|
var keys = constant([]),
|
||
|
|
order = orderNone,
|
||
|
|
offset = offsetNone,
|
||
|
|
value = stackValue;
|
||
|
|
|
||
|
|
function stack(data) {
|
||
|
|
var sz = Array.from(keys.apply(this, arguments), stackSeries),
|
||
|
|
i, n = sz.length, j = -1,
|
||
|
|
oz;
|
||
|
|
|
||
|
|
for (const d of data) {
|
||
|
|
for (i = 0, ++j; i < n; ++i) {
|
||
|
|
(sz[i][j] = [0, +value(d, sz[i].key, j, data)]).data = d;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0, oz = array(order(sz)); i < n; ++i) {
|
||
|
|
sz[oz[i]].index = i;
|
||
|
|
}
|
||
|
|
|
||
|
|
offset(sz, oz);
|
||
|
|
return sz;
|
||
|
|
}
|
||
|
|
|
||
|
|
stack.keys = function(_) {
|
||
|
|
return arguments.length ? (keys = typeof _ === "function" ? _ : constant(Array.from(_)), stack) : keys;
|
||
|
|
};
|
||
|
|
|
||
|
|
stack.value = function(_) {
|
||
|
|
return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), stack) : value;
|
||
|
|
};
|
||
|
|
|
||
|
|
stack.order = function(_) {
|
||
|
|
return arguments.length ? (order = _ == null ? orderNone : typeof _ === "function" ? _ : constant(Array.from(_)), stack) : order;
|
||
|
|
};
|
||
|
|
|
||
|
|
stack.offset = function(_) {
|
||
|
|
return arguments.length ? (offset = _ == null ? offsetNone : _, stack) : offset;
|
||
|
|
};
|
||
|
|
|
||
|
|
return stack;
|
||
|
|
}
|