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d3-geo-scale-bar - npm Package Compare versions

Comparing version 0.2.0 to 0.3.0

.babelrc
.DS_Store
src/.DS_Store
src/array/ascending.js
src/array/bisect.js
src/array/bisector.js
src/array/ticks.js
src/axis/axis.js
src/geo/adder.js
src/geo/distance.js
src/geo/length.js
src/geo/math.js
src/geo/noop.js
src/geo/stream.js
src/interpolate/index.js
src/interpolate/number.js
src/interpolate/round.js
src/interpolate/value.js
src/scale/.DS_Store
src/scale/constant.js
src/scale/continuous.js
src/scale/init.js
src/scale/linear.js
src/scale/number.js
src/scale/tickFormat.js

3

build/d3-geo-scale-bar.min.js

@@ -1,2 +0,1 @@

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r=t.geometries,e=-1,i=r.length;++e<i;)l(r[e],n)}},vt=function(){return new a}(),Mt={sphere:c,point:c,lineStart:g,lineEnd:c,polygonStart:c,polygonEnd:c},yt=[null,null],xt={type:"LineString",coordinates:yt},bt=Math.sqrt(50),kt=Math.sqrt(10),wt=Math.sqrt(2),Nt=function(t){return 1===t.length&&(t=w(t)),{left:function(n,r,e,i){for(null==e&&(e=0),null==i&&(i=n.length);e<i;){var o=e+i>>>1;t(n[o],r)<0?e=o+1:i=o}return e},right:function(n,r,e,i){for(null==e&&(e=0),null==i&&(i=n.length);e<i;){var o=e+i>>>1;t(n[o],r)>0?i=o:e=o+1}return e}}}(k),St=Nt.right,At=[0,1],zt=/^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;U.prototype=X.prototype,X.prototype.toString=function(){return this.fill+this.align+this.sign+this.symbol+(this.zero?"0":"")+(void 0===this.width?"":Math.max(1,0|this.width))+(this.comma?",":"")+(void 0===this.precision?"":"."+Math.max(0,0|this.precision))+(this.trim?"~":"")+this.type};var Pt,Ft,Et,jt,_t={"%":function(t,n){return(100*t).toFixed(n)},b:function(t){return Math.round(t).toString(2)},c:function(t){return t+""},d:function(t){return Math.round(t).toString(10)},e:function(t,n){return t.toExponential(n)},f:function(t,n){return t.toFixed(n)},g:function(t,n){return t.toPrecision(n)},o:function(t){return Math.round(t).toString(8)},p:function(t,n){return T(100*t,n)},r:T,s:R,X:function(t){return Math.round(t).toString(16).toUpperCase()},x:function(t){return Math.round(t).toString(16)}},Ot=Array.prototype.map,Ct=["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"];!function(t){Ft=Z(t),Et=Ft.format,jt=Ft.formatPrefix}({decimal:".",thousands:",",grouping:[3],currency:["$",""],minus:"-"}),t.geoScaleBar=nt,Object.defineProperty(t,"__esModule",{value:!0})});

2

index.js

@@ -1,1 +0,1 @@

export {default as geoScaleBar} from "./src/geoScaleBar";
export { default as geoScaleBar } from "./src/geoScaleBar";

14

package.json
{
"name": "d3-geo-scale-bar",
"version": "0.2.0",
"version": "0.3.0",
"description": "Displays automatic scale bars for projected geospatial data.",

@@ -27,3 +27,3 @@ "keywords": [

"pretest": "rm -rf build && mkdir build && rollup -c --banner \"$(preamble)\"",
"test": "tape 'test/**/*-test.js' && eslint index.js src",
"test": "tape 'test/**/*-test.js'",
"prepublish": "npm run test && uglifyjs build/d3-geo-scale-bar.js -c -m -o build/d3-geo-scale-bar.min.js",

@@ -33,7 +33,11 @@ "postpublish": "zip -j build/d3-geo-scale-bar.zip -- LICENSE README.md build/d3-geo-scale-bar.js build/d3-geo-scale-bar.min.js"

"devDependencies": {
"@babel/core": "^7.7.7",
"@babel/preset-env": "^7.7.7",
"babel": "^6.23.0",
"d3-geo": "^1.11.9",
"d3-selection": "^1.3.0",
"eslint": "3",
"jsdom": "11",
"package-preamble": "0.1",
"rollup": "^0.62.0",
"rollup-plugin-babel": "^4.3.3",
"rollup-plugin-node-resolve": "^3.3.0",

@@ -44,6 +48,4 @@ "tape": "4",

"dependencies": {
"d3-axis": "^1.0.8",
"d3-geo": "^1.10.0",
"d3-scale": "^2.1.0"
"d3-format": "^1.4.2"
}
}

41

README.md

@@ -14,3 +14,3 @@ # d3-geo-scale-bar

```html
<script src="https://unpkg.com/d3-geo-scale-bar@0.1.4/build/d3-geo-scale-bar.min.js"></script>
<script src="https://unpkg.com/d3-geo-scale-bar@0.3.0/build/d3-geo-scale-bar.min.js"></script>
<script>

@@ -77,48 +77,37 @@

<a name="_scaleBar" href="#_scaleBar">#</a> <i>scaleBar</i>(<i>context</i>) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L23 "Source")
<a name="_scaleBar" href="#_scaleBar">#</a> <i>scaleBar</i>(<i>context</i>) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L27 "Source")
Render the scale bar to the given *context*, which may be either a [selection](https://github.com/d3/d3-selection) of SVG containers (either SVG or G elements) or a corresponding [transition](https://github.com/d3/d3-transition). Configure the scale bar with [*scaleBar*.projection](#scaleBar_projection) and [*scaleBar*.fitSize](#scaleBar_fitSize) before rendering.
<a name="scaleBar_projection" href="#scaleBar_projection">#</a> <i>scaleBar</i>.<b>projection</b>([<i>projection</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L138 "Source")
<a name="scaleBar_projection" href="#scaleBar_projection">#</a> <i>scaleBar</i>.<b>projection</b>([<i>projection</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L95 "Source")
If *projection* is specified, sets the [projection](https://github.com/d3/d3-geo#projections) and returns the scale bar. If *projection* is not specified, returns the current projection.
<a name="scaleBar_fitSize" href="#scaleBar_fitSize">#</a> <i>scaleBar</i>.<b>fitSize</b>(<i>size</i>, <i>object</i>) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L124 "Source")
<a name="scaleBar_extent" href="#scaleBar_extent">#</a> <i>scaleBar</i>.<b>extent</b>([<i>size</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L91 "Source")
A convenience method combining the setter functions of [*scaleBar*.extent](#scaleBar_extent) and [*scaleBar*.feature](#scaleBar_feature). The following two statements are equivalent:
```js
scaleBar.extent([width, height]).feature(object);
scaleBar.fitExtent([width, height], object);
```
<a name="scaleBar_extent" href="#scaleBar_extent">#</a> <i>scaleBar</i>.<b>extent</b>([<i>size</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L130 "Source")
If *size* is specified, sets the extent such that (1) the scale bar's default top-left corner aligns with the top-left corner of the projected geospatial data, and (2) you can position the scale bar vertically with [*scaleBar*.top](#scaleBar_top) and horizontally with [*scaleBar*.left](#scaleBar_left). If *size* is not specified, returns the current extent.
<a name="scaleBar_feature" href="#scaleBar_feature">#</a> <i>scaleBar</i>.<b>feature</b>([<i>object</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L134 "Source")
<a name="scaleBar_units" href="#scaleBar_units">#</a> <i>scaleBar</i>.<b>units</b>([<i>units</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L99 "Source")
If *object<* is specified, passes the corresponding GeoJSON Feature or FeatureCollection to the scale bar to allow for calculation of mile and kilometer scales and for positioning of the scale bar on the projected geospatial data. If *object* is not specified, returns the current object.
If *units* is specifed, sets the units of the scale bar. Defaults to "kilometers". If you set *units* to "miles", the [*radius*]("#scaleBar_radius") will also update to 3,959, [the number of miles of Earth's radius](https://www.google.com/search?q=radius+of+earth+in+miles). You can override this if you are mapping planets other than Earth. If *units* is not specified, returns the current units string.
<a name="scaleBar_units" href="#scaleBar_units">#</a> <i>scaleBar</i>.<b>units</b>([<i>units</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L142 "Source")
<a name="scaleBar_distance" href="#scaleBar_distance">#</a> <i>scaleBar</i>.<b>distance</b>([<i>distance</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L114 "Source")
If *units* is specifed, sets the units of the scale bar. Defaults to "kilometers". If you set *units* to "miles", the [*radius*]("#scaleBar_radius") will also update to 3,959, [the number of miles of Earth's radius](https://www.google.com/search?q=radius+of+earth+in+miles). You can override this if you are mapping planets other than Earth. If *units* is not specified, returns the current number of kilometers of the scale bar.
<a name="scaleBar_distance" href="#scaleBar_distance">#</a> <i>scaleBar</i>.<b>distance</b>([<i>distance</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L142 "Source")
If *distance* is specifed, sets the maxiumum distance of the scale bar in the scale bar's units. Defaults to the largest exponent of 10 that will fit on the map. If *distance* is not specified, returns the current maximum distance of the scale bar.
<a name="scaleBar_radius" href="#scaleBar_radius">#</a> <i>scaleBar</i>.<b>radius</b>([<i>radius</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L146 "Source")
<a name="scaleBar_radius" href="#scaleBar_radius">#</a> <i>scaleBar</i>.<b>radius</b>([<i>radius</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L118 "Source")
If *radius* is specifed, sets the radius of the sphere on which the geospatial data is projected. Defaults to 6,371, [the radius of the Earth](https://www.google.com/search?q=radius+of+earth+in+kilometers). If you set [*units*]("#scaleBar_units") to "miles", the *radius* will also update to 3,959, [the number of miles of Earth's radius](https://www.google.com/search?q=radius+of+earth+in+miles). to If *radius* is not specified, returns the sphere's current radius.
<a name="scaleBar_tickValues" href="#scaleBar_tickValues">#</a> <i>scaleBar</i>.<b>tickValues</b>([<i>values</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L150 "Source")
<a name="scaleBar_tickValues" href="#scaleBar_tickValues">#</a> <i>scaleBar</i>.<b>tickValues</b>([<i>values</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L122 "Source")
If a *values* array is specified, the specified values are used for ticks rather than using the scale bar’s automatic tick generator. Defaults to [0, kilometers / 4, kilometers / 2, kilometers]. If *values* is not specified, returns the current tick values.
<a name="scaleBar_label" href="#scaleBar_label">#</a> <i>scaleBar</i>.<b>label</b>([<i>label</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L150 "Source")
<a name="scaleBar_label" href="#scaleBar_label">#</a> <i>scaleBar</i>.<b>label</b>([<i>label</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L126 "Source")
If a *label* string is specified, updates the text in the scale bar's label to the specified string. Defaults to the capitalized unit, e.g. "Kilometers". If *label* is not specified, returns the current label.
<a name="scaleBar_scaleFactor" href="#scaleBar_scaleFactor">#</a> <i>scaleBar</i>.<b>scaleFactor</b>([<i>k</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L150 "Source")
<a name="scaleBar_scaleFactor" href="#scaleBar_scaleFactor">#</a> <i>scaleBar</i>.<b>scaleFactor</b>([<i>k</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L142 "Source")
If *k* is specified, zooms the scale bar by the *k* scale factor. This will commonly be used in conjunction with [d3-zoom](https://github.com/d3/d3-zoom):
If *k* is specified, zooms the scale bar by the *k* scale factor. This will commonly [be used](https://bl.ocks.org/HarryStevens/64fc5f1a4489abe78433b7d19510f864) in conjunction with [d3-zoom](https://github.com/d3/d3-zoom):

@@ -142,12 +131,12 @@ ```js

<a name="scaleBar_height" href="#scaleBar_height">#</a> <i>scaleBar</i>.<b>height</b>([<i>height</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L166 "Source")
<a name="scaleBar_height" href="#scaleBar_height">#</a> <i>scaleBar</i>.<b>height</b>([<i>height</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L130 "Source")
If *height* is specified, sets the height of the scale bar in pixels. Defaults to 4. If *height* is not specified, returns the current height of the scale bar.
<a name="scaleBar_left" href="#scaleBar_left">#</a> <i>scaleBar</i>.<b>left</b>([<i>left</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L170 "Source")
<a name="scaleBar_left" href="#scaleBar_left">#</a> <i>scaleBar</i>.<b>left</b>([<i>left</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L134 "Source")
If *left* is specified, sets the left position to the specified value which must be in the range [0, 1], where 0 is the left-most side of the projected geospatial data and 1 is the right-most. If *left* is not specified, returns the current left position which defaults to 0.
<a name="scaleBar_top" href="#scaleBar_top">#</a> <i>scaleBar</i>.<b>top</b>([<i>top</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L174 "Source")
<a name="scaleBar_top" href="#scaleBar_top">#</a> <i>scaleBar</i>.<b>top</b>([<i>top</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L138 "Source")
If *top* is specified, sets the top position to the specified value which must be in the range [0, 1], where 0 is the top-most side of the projected geospatial data and 1 is the bottom-most. If *top* is not specified, returns the current top position which defaults to 0.

13

rollup.config.js

@@ -0,1 +1,2 @@

import babel from "rollup-plugin-babel";
import resolve from "rollup-plugin-node-resolve";

@@ -9,7 +10,2 @@

format: "umd",
globals: {
"d3-axis": "d3",
"d3-geo": "d3",
"d3-scale": "d3"
},
name: "d3"

@@ -19,5 +15,8 @@ },

resolve({
only: ["d3-array", "d3-axis", "d3-collection", "d3-color", "d3-format", "d3-geo", "d3-interpolate", "d3-scale", "d3-time", "d3-time-format"]
only: ["d3-format"]
}),
babel({
exclude: "node_modules/**"
})
]
}
};

120

src/geoScaleBar.js

@@ -1,11 +0,8 @@

import {geoBounds, geoDistance} from "d3-geo";
import {scaleLinear} from "d3-scale";
import {axisBottom} from "d3-axis";
import { axisBottom } from "./axis/axis";
import { default as geoDistance } from "./geo/distance";
import { default as scaleLinear } from "./scale/linear";
export default function(){
// Exposed
var extent,
let extent,
projection,
feature,
height = 4,

@@ -21,6 +18,3 @@ left = 0,

// Unexposed
var g,
text,
unitPresets = {
const unitPresets = {
"miles": {

@@ -32,64 +26,42 @@ radius: 3959

}
},
axis,
scale;
};
function scaleBar(context){
var bounds = geoBounds(feature);
var vert_point_a_projected = projection([0, bounds[0][1]]);
var vert_point_b_projected = projection([0, bounds[1][1]]);
var height_projected = Math.abs(vert_point_a_projected[1] - vert_point_b_projected[1]);
var bottom = Math.abs((bounds[1][1] - bounds[0][1]) * top);
var point_a = [bounds[0][0], bottom];
var point_b = [bounds[1][0], bottom];
var distance_radians = geoDistance(point_a, point_b)
var d = distance_radians * radius;
var point_a_projected = projection(point_a);
var point_b_projected = projection(point_b);
var width_projected = point_b_projected[0] - point_a_projected[0];
// A very simple algorithm for determining a good mileage / kilometerage. This can be overridden.
distance = distance || Math.pow(10, countDigits(d) - 1);
var proportion_of_whole = distance / d;
var width_of_bar = proportion_of_whole * width_projected;
var top_of_bar = Math.min(vert_point_a_projected[1], vert_point_b_projected[1]) + (height_projected * top);
var left_of_bar = Math.min(point_a_projected[0], point_b_projected[0]) + (width_projected * left);
context.attr("width", extent[0]).attr("height", extent[1]);
scale = scale || scaleLinear();
scale
.range([0, width_of_bar])
.domain([0, distance]);
const x = extent[0] * left,
y = extent[1] * top,
start = projection.invert([x, y]);
distance = distance || Math.pow(10, countDigits(geoDistance(projection.invert([0, 0]), projection.invert([0, extent[1]])) * radius) - 1);
const w = distance / (geoDistance(start, projection.invert([x + 1, y])) * radius);
const scale = scaleLinear()
.range([0, w])
.domain([0, distance]);
if (scaleFactor !== 1){
scale
.domain([0, scale.invert(width_of_bar / scaleFactor)]);
.domain([0, scale.invert(w / scaleFactor)]);
}
axis = axis || axisBottom();
const tickMax = scale.domain()[1];
var max_tick_value = scale.domain()[1] / distance * distance;
const axis = axisBottom()
.scale(scale)
.tickValues(tickValues ? tickValues : [0, tickMax / 4, tickMax / 2, tickMax])
.tickSize(height);
axis
.scale(scale)
.tickValues(tickValues ? tickValues : [0, max_tick_value / 4, max_tick_value / 2, max_tick_value])
.tickSize(height);
g = g || context.append("g")
.attr("class", "scale-bar");
let g = context.select("g")
if (!g._groups[0][0]) {
g = context.append("g")
.attr("class", "scale-bar");
}
g
.attr("transform", "translate(" + left_of_bar + ", " + (top_of_bar + 14) + ")")
.attr("transform", "translate(" + (extent[0] * left) + ", " + (extent[1] * top) + ")")
.call(axis);
var rects = g.selectAll("rect")
.data(axis.tickValues().map(function(d, i, data){ return [d, data[i + 1]]; }).filter(function(d, i, data){ return i !== data.length - 1; }));
const rects = g.selectAll("rect")
.data(axis.tickValues().map((d, i, data) => [d, data[i + 1]]).filter((d, i, data) => i !== data.length - 1));

@@ -101,8 +73,13 @@ rects.exit().remove();

.style("stroke", "#000")
.style("fill", function(d, i){ return i % 2 === 0 ? "#000" : "#fff"; })
.style("fill", (d, i) => i % 2 === 0 ? "#000" : "#fff")
.merge(rects)
.attr("x", function(d){ return scale(d[0]); })
.attr("width", function(d){ return scale(d[1] - d[0]); });
.attr("x", d => scale(d[0]))
.attr("width", d => scale(d[1] - d[0]));
text = text || g.append("text")
let text = g.select(".label");
if (!text._groups[0][0]){
text = g.append("text")
.attr("class", "label")
}
text
.attr("class", "label")

@@ -112,13 +89,7 @@ .style("fill", "#000")

.style("font-size", "12px")
.attr("y", -4)
.attr("y", -4);
text.text(label || capitalizeFirstLetter(units))
text.text(label || capitalizeFirstLetter(units));
}
scaleBar.fitSize = function(e, o){
extent = e;
feature = o;
return scaleBar;
}
scaleBar.extent = function(_) {

@@ -128,6 +99,2 @@ return arguments.length ? (extent = _, scaleBar) : extent;

scaleBar.feature = function(_) {
return arguments.length ? (feature = _, scaleBar) : feature;
}
scaleBar.projection = function(_) {

@@ -187,2 +154,3 @@ return arguments.length ? (projection = _, scaleBar) : projection;

}
function capitalizeFirstLetter(_) {

@@ -189,0 +157,0 @@ return _.charAt(0).toUpperCase() + _.slice(1);

.eslintrc
demo/basic/index.html
demo/basic/india.js
build/d3-geo-scale-bar.js

Sorry, the diff of this file is too big to display

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