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remove excess methods and process around metadata type coercion

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This commit is contained in:
Colin Megill
2017-11-27 02:41:50 -08:00
parent 3fd7fdf5c4
commit 354a3857cc
1 changed files with 6 additions and 68 deletions
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74
src/components/continuous/util.js
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@@ -10,38 +10,18 @@ export const innerHeight = height - 2;
export const devicePixelRatio = window.devicePixelRatio || 1;
export const types = {
"Number": {
key: "Number",
coerce: function(d) { return +d; },
extent: d3.extent,
within: function(d, extent, dim) { return extent[0] <= dim.scale(d) && dim.scale(d) <= extent[1]; },
defaultScale: d3.scaleSqrt().range([innerHeight, 0])
},
"String": {
key: "String",
coerce: String,
extent: function (data) { return data.sort(); },
within: function(d, extent, dim) { return extent[0] <= dim.scale(d) && dim.scale(d) <= extent[1]; },
defaultScale: d3.scalePoint().range([0, innerHeight])
},
"Date": {
key: "Date",
coerce: function(d) { return new Date(d); },
extent: d3.extent,
within: function(d, extent, dim) { return extent[0] <= dim.scale(d) && dim.scale(d) <= extent[1]; },
defaultScale: d3.scaleTime().range([0, innerHeight])
}
};
export const createDimensions = (data) => {
const newArr = []
_.each(data, (value, key) => {
if (value.range) {
newArr.push({
key: key, /* room for confusion: lodash calls this key, it's also the name of the property parallel coords code is looking for */
type: types["Number"],
scale: d3.scaleSqrt().range([innerHeight, 0])
type: {
within: (d, extent, dim) => {
return extent[0] <= dim.scale(d) && dim.scale(d) <= extent[1];
},
},
scale: d3.scaleSqrt().range([innerHeight, 0]).domain([0, value.range.max])
})
}
})
@@ -69,45 +49,3 @@ export const project = (d, dimensions, xscale) => {
return [xscale(i),p.scale(d[p.key])];
});
};
/*****************************************
******************************************
process data and extract features
******************************************
******************************************/
export const processData = (metadata, dimensions) => {
// shuffle the metadata! - or not, this is a visual effect
// metadata = d3.shuffle(metadata);
metadata.forEach((d) => {
dimensions.forEach((p) => {
d[p.key] = !d[p.key] ? null : p.type.coerce(d[p.key]);
});
// truncate long text strings to fit in metadata table
for (var key in d) {
if (d[key] && d[key].length > 35) d[key] = d[key].slice(0,36);
}
});
// type/dimension default setting happens here
dimensions.forEach((dim) => {
if (!("domain" in dim)) {
// detect domain using dimension type's extent function
dim.domain = d3_functor(dim.type.extent)(
metadata.map((d) => { return d[dim.key]; })
);
}
if (!("scale" in dim)) {
// use type's default scale for dimension
dim.scale = dim.type.defaultScale.copy();
}
dim.scale.domain(dim.domain);
});
return {
processedMetadata: metadata,
processedDimensions: dimensions
}
}