d3-geo-scale-bar
Advanced tools
Comparing version 0.1.4 to 0.2.0
@@ -1,2 +0,2 @@ | ||
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%p",periods:["AM","PM"],days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],shortDays:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],shortMonths:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]});var qi=(Date.prototype.toISOString||zi("%Y-%m-%dT%H:%M:%S.%LZ"),+new Date("2000-01-01T00:00:00.000Z")||ji("%Y-%m-%dT%H:%M:%S.%LZ"),Array.prototype.slice),Zi=1,Ri=2,Wi=3,_i=4,Qi=1e-6;t.geoScaleBar=Se,Object.defineProperty(t,"__esModule",{value:!0})}); |
| { | ||
| "name": "d3-geo-scale-bar", | ||
| "version": "0.1.4", | ||
| "version": "0.2.0", | ||
| "description": "Displays automatic scale bars for projected geospatial data.", | ||
@@ -5,0 +5,0 @@ "keywords": [ |
@@ -34,7 +34,7 @@ # d3-geo-scale-bar | ||
| A scale bar consists of two [g elements](https://www.w3.org/TR/SVG/struct.html#Groups) of classes "miles" and "kilometers". Each of those contains an [axis](https://github.com/d3/d3-axis#api-reference) with [path elements](https://www.w3.org/TR/SVG/paths.html#PathElement) of class "domain", g elements of class "tick" representing each of the scale's ticks, [rect elements](https://www.w3.org/TR/SVG/shapes.html#RectElement) of alternating black and white fill, and finally a [text element](https://www.w3.org/TR/SVG/text.html#TextElement) of class "label" containing the units of the corresponding scale bar. All of these can be styled and manipulated like normal SVG elements. | ||
| A scale bar consists of a [g element](https://www.w3.org/TR/SVG/struct.html#Groups) of class "scale-bar". That element contains an [axis](https://github.com/d3/d3-axis#api-reference) with a [path element](https://www.w3.org/TR/SVG/paths.html#PathElement) of class "domain", g elements of class "tick" representing each of the scale's ticks, [rect elements](https://www.w3.org/TR/SVG/shapes.html#RectElement) of alternating black and white fill, and finally a [text element](https://www.w3.org/TR/SVG/text.html#TextElement) of class "label" containing the units of the corresponding scale bar. All of these can be styled and manipulated like normal SVG elements. | ||
| ```html | ||
| <g class="miles" transform="translate(0, 14)" font-size="10" font-family="sans-serif" text-anchor="middle"> | ||
| <path class="domain" stroke="#000" d="M0.5,4V0.5H218.62618117029396V4"></path> | ||
| ```svg | ||
| <g class="scale-bar" transform="translate(2, 14)" font-size="10" font-family="sans-serif" text-anchor="middle"> | ||
| <path class="domain" stroke="#000" d="M0.5,4V0.5H200V4"></path> | ||
| <g class="tick" opacity="1" transform="translate(0.5,0)"> | ||
@@ -46,3 +46,3 @@ <line stroke="#000" y2="4"></line> | ||
| </g> | ||
| <g class="tick" opacity="1" transform="translate(55.03154529257349,0)"> | ||
| <g class="tick" opacity="1" transform="translate(50,0)"> | ||
| <line stroke="#000" y2="4"></line> | ||
@@ -53,3 +53,3 @@ <text fill="#000" y="7" dy="0.71em"> | ||
| </g> | ||
| <g class="tick" opacity="1" transform="translate(109.56309058514698,0)"> | ||
| <g class="tick" opacity="1" transform="translate(100,0)"> | ||
| <line stroke="#000" y2="4"></line> | ||
@@ -60,3 +60,3 @@ <text fill="#000" y="7" dy="0.71em"> | ||
| </g> | ||
| <g class="tick" opacity="1" transform="translate(218.62618117029396,0)"> | ||
| <g class="tick" opacity="1" transform="translate(200,0)"> | ||
| <line stroke="#000" y2="4"></line> | ||
@@ -69,5 +69,5 @@ <text fill="#000" y="7" dy="0.71em"> | ||
| <rect height="4" x="50" width="50" style="stroke: #000; fill: #fff;"></rect> | ||
| <rect height="4" x="100" width="200" style="stroke: #000; fill: #000;"></rect> | ||
| <rect height="4" x="100" width="100" style="stroke: #000; fill: #000;"></rect> | ||
| <text class="label" y="-4" style="fill: #000; text-anchor: start; font-size: 12px;"> | ||
| Miles | ||
| Kilometers | ||
| </text> | ||
@@ -104,26 +104,43 @@ </g> | ||
| <a name="scaleBar_kilometers" href="#scaleBar_kilometers">#</a> <i>scaleBar</i>.<b>kilometers</b>([<i>kilometers</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L142 "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#L142 "Source") | ||
| If *kilometers* is specifed, sets the number of kilometers of the scale bar. Defaults to the largest exponent of 10 that will fit on the map. If *kilometers* is not specified, returns the current number of kilometers of the scale bar. | ||
| 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_kilometersRadius" href="#scaleBar_kilometersRadius">#</a> <i>scaleBar</i>.<b>kilometersRadius</b>([<i>kilometers</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L146 "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#L142 "Source") | ||
| If *kilometers* is specifed, sets the number of kilometers of 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 *kilometers* is not specified, returns the current number of kilometers of the sphere's radius. | ||
| 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_kilometersTickValues" href="#scaleBar_kilometersTickValues">#</a> <i>scaleBar</i>.<b>kilometersTickValues</b>([<i>values</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L150 "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#L146 "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") | ||
| 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_miles" href="#scaleBar_miles">#</a> <i>scaleBar</i>.<b>miles</b>([<i>miles</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L154 "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#L150 "Source") | ||
| If *miles* is specified, sets the number of miles of the scale bar. Defaults to the largest exponent of 10 that will fit on the map. If *miles* is not specified, returns the current number of miles of the scale bar. | ||
| 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_milesRadius" href="#scaleBar_milesRadius">#</a> <i>scaleBar</i>.<b>milesRadius</b>([<i>miles</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L158 "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#L150 "Source") | ||
| If *miles* is specified, sets the number of miles of the radius of the sphere on which the geospatial data is projected. Defaults to 3,959, [the radius of the Earth](https://www.google.com/search?q=radius+of+earth+in+miles). If *miles* is not specified, returns the current number of miles of the sphere's radius. | ||
| 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): | ||
| <a name="scaleBar_milesTickValues" href="#scaleBar_milesTickValues">#</a> <i>scaleBar</i>.<b>milesTickValues</b>([<i>values</i>]) [<>](https://github.com/HarryStevens/d3-geo-scale-bar/blob/master/src/geoScaleBar.js#L162 "Source") | ||
| ```js | ||
| 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, miles / 4, miles / 2, miles]. If *values* is not specified, returns the current tick values. | ||
| var zoom = d3.zoom() | ||
| .on("zoom", _ => { | ||
| var t = d3.event.transform; | ||
| g.attr("transform", t); | ||
| scaleBar.scaleFactor(t.k); // Zoom the scale bar by the k scale factor. | ||
| scaleBarSelection.call(scaleBar); | ||
| }); | ||
| svg.call(zoom); | ||
| ``` | ||
| If *k* is not specified, returns the current scale factor. | ||
| <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") | ||
@@ -130,0 +147,0 @@ |
@@ -6,19 +6,31 @@ import {geoBounds, geoDistance} from "d3-geo"; | ||
| export default function(){ | ||
| // Exposed | ||
| var extent, | ||
| projection, | ||
| feature, | ||
| mG, | ||
| miles, | ||
| milesText, | ||
| milesTickValues, | ||
| milesRadius = 3959, | ||
| kG, | ||
| kilometers, | ||
| kilometersTickValues, | ||
| kilometersText, | ||
| kilometersRadius = 6371, | ||
| height = 4, | ||
| left = 0, | ||
| top = 0; | ||
| top = 0, | ||
| units = "kilometers", | ||
| distance, | ||
| radius = 6371, | ||
| tickValues, | ||
| label, | ||
| scaleFactor = 1; | ||
| // Unexposed | ||
| var g, | ||
| text, | ||
| unitPresets = { | ||
| "miles": { | ||
| radius: 3959 | ||
| }, | ||
| "kilometers": { | ||
| radius: 6371 | ||
| } | ||
| }, | ||
| axis, | ||
| scale; | ||
| function scaleBar(context){ | ||
@@ -36,4 +48,3 @@ var bounds = geoBounds(feature); | ||
| var distance_miles = distance_radians * milesRadius; | ||
| var distance_kilometers = distance_radians * kilometersRadius; | ||
| var d = distance_radians * radius; | ||
@@ -44,10 +55,7 @@ var point_a_projected = projection(point_a); | ||
| // A very simple algorith for determining a good mileage / kilometerage. This can be overridden. | ||
| miles = miles || Math.pow(10, countDigits(distance_miles) - 1); | ||
| var miles_proportion_of_whole = miles / distance_miles; | ||
| var miles_width_of_bar = miles_proportion_of_whole * width_projected; | ||
| // A very simple algorithm for determining a good mileage / kilometerage. This can be overridden. | ||
| distance = distance || Math.pow(10, countDigits(d) - 1); | ||
| kilometers = kilometers || Math.pow(10, countDigits(distance_kilometers) - 1); | ||
| var kilometers_proportion_of_whole = kilometers / distance_kilometers; | ||
| var kilometers_width_of_bar = kilometers_proportion_of_whole * width_projected; | ||
| var proportion_of_whole = distance / d; | ||
| var width_of_bar = proportion_of_whole * width_projected; | ||
@@ -59,31 +67,43 @@ var top_of_bar = Math.min(vert_point_a_projected[1], vert_point_b_projected[1]) + (height_projected * top); | ||
| var milesScale = scaleLinear() | ||
| .range([0, miles_width_of_bar]) | ||
| .domain([0, miles]); | ||
| scale = scale || scaleLinear(); | ||
| scale | ||
| .range([0, width_of_bar]) | ||
| .domain([0, distance]); | ||
| var milesAxis = axisBottom(milesScale) | ||
| .tickValues(milesTickValues ? milesTickValues : [0, miles / 4, miles / 2, miles]) | ||
| if (scaleFactor !== 1){ | ||
| scale | ||
| .domain([0, scale.invert(width_of_bar / scaleFactor)]); | ||
| } | ||
| axis = axis || axisBottom(); | ||
| var max_tick_value = scale.domain()[1] / distance * distance; | ||
| axis | ||
| .scale(scale) | ||
| .tickValues(tickValues ? tickValues : [0, max_tick_value / 4, max_tick_value / 2, max_tick_value]) | ||
| .tickSize(height); | ||
| mG = mG || context.append("g") | ||
| .attr("class", "miles"); | ||
| g = g || context.append("g") | ||
| .attr("class", "scale-bar"); | ||
| mG | ||
| g | ||
| .attr("transform", "translate(" + left_of_bar + ", " + (top_of_bar + 14) + ")") | ||
| .call(milesAxis); | ||
| .call(axis); | ||
| var milesRects = mG.selectAll("rect") | ||
| .data(milesAxis.tickValues().map(function(d, i, data){ return [d, data[i + 1]]; }).filter(function(d, i, data){ return i !== data.length - 1; })); | ||
| 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; })); | ||
| milesRects.exit().remove(); | ||
| rects.exit().remove(); | ||
| milesRects.enter().append("rect") | ||
| rects.enter().append("rect") | ||
| .attr("height", height) | ||
| .style("stroke", "#000") | ||
| .style("fill", function(d, i){ return i % 2 === 0 ? "#000" : "#fff"; }) | ||
| .merge(milesRects) | ||
| .attr("x", function(d){ return milesScale(d[0]); }) | ||
| .attr("width", function(d){ return milesScale(d[1] - d[0]); }); | ||
| .merge(rects) | ||
| .attr("x", function(d){ return scale(d[0]); }) | ||
| .attr("width", function(d){ return scale(d[1] - d[0]); }); | ||
| milesText = milesText || mG.append("text") | ||
| text = text || g.append("text") | ||
| .attr("class", "label") | ||
@@ -94,38 +114,4 @@ .style("fill", "#000") | ||
| .attr("y", -4) | ||
| .text("Miles"); | ||
| var kilometersScale = scaleLinear() | ||
| .range([0, kilometers_width_of_bar]) | ||
| .domain([0, kilometers]); | ||
| var kilometersAxis = axisBottom(kilometersScale) | ||
| .tickValues(kilometersTickValues ? kilometersTickValues : [0, kilometers / 4, kilometers / 2, kilometers]) | ||
| .tickSize(height); | ||
| kG = kG || context.append("g") | ||
| kG | ||
| .attr("class", "kilometers") | ||
| .attr("transform", "translate(" + left_of_bar + ", " + (top_of_bar + 50) + ")") | ||
| .call(kilometersAxis); | ||
| var kilometersRects = kG.selectAll("rect") | ||
| .data(kilometersAxis.tickValues().map(function(d, i, data){ return [d, data[i + 1]]; }).filter(function(d, i, data){ return i !== data.length - 1; })); | ||
| kilometersRects.exit().remove(); | ||
| kilometersRects.enter().append("rect") | ||
| .attr("height", height) | ||
| .style("stroke", "#000") | ||
| .style("fill", function(d, i){ return i % 2 === 0 ? "#000" : "#fff"; }) | ||
| .merge(kilometersRects) | ||
| .attr("x", function(d){ return kilometersScale(d[0]); }) | ||
| .attr("width", function(d){ return kilometersScale(d[1] - d[0]); }); | ||
| kilometersText = kilometersText || kG.append("text") | ||
| .attr("class", "label") | ||
| .style("fill", "#000") | ||
| .style("text-anchor", "start") | ||
| .style("font-size", "12px") | ||
| .attr("y", -4) | ||
| .text("Kilometers"); | ||
| text.text(label || capitalizeFirstLetter(units)) | ||
| } | ||
@@ -139,36 +125,43 @@ | ||
| scaleBar.extent = function(array) { | ||
| return arguments.length ? (extent = array, scaleBar) : extent; | ||
| scaleBar.extent = function(_) { | ||
| return arguments.length ? (extent = _, scaleBar) : extent; | ||
| } | ||
| scaleBar.feature = function(object) { | ||
| return arguments.length ? (feature = object, scaleBar) : feature; | ||
| scaleBar.feature = function(_) { | ||
| return arguments.length ? (feature = _, scaleBar) : feature; | ||
| } | ||
| scaleBar.projection = function(proj) { | ||
| return arguments.length ? (projection = proj, scaleBar) : projection; | ||
| scaleBar.projection = function(_) { | ||
| return arguments.length ? (projection = _, scaleBar) : projection; | ||
| } | ||
| scaleBar.kilometers = function(_) { | ||
| return arguments.length ? (kilometers = +_, scaleBar) : kilometers; | ||
| } | ||
| scaleBar.units = function(_){ | ||
| if (arguments.length) { | ||
| units = _; | ||
| if (Object.keys(unitPresets).includes(_)) { | ||
| radius = unitPresets[_].radius; | ||
| } | ||
| scaleBar.kilometersRadius = function(_) { | ||
| return arguments.length ? (kilometersRadius = +_, scaleBar) : kilometersRadius; | ||
| return scaleBar; | ||
| } | ||
| else { | ||
| return units; | ||
| } | ||
| } | ||
| scaleBar.kilometersTickValues = function(_) { | ||
| return arguments.length ? (kilometersTickValues = _, scaleBar) : kilometersTickValues; | ||
| scaleBar.distance = function(_) { | ||
| return arguments.length ? (distance = +_, scaleBar) : distance; | ||
| } | ||
| scaleBar.miles = function(_) { | ||
| return arguments.length ? (miles = +_, scaleBar) : miles; | ||
| scaleBar.radius = function(_) { | ||
| return arguments.length ? (radius = +_, scaleBar) : radius; | ||
| } | ||
| scaleBar.milesRadius = function(_) { | ||
| return arguments.length ? (milesRadius = +_, scaleBar) : milesRadius; | ||
| scaleBar.tickValues = function(_) { | ||
| return arguments.length ? (tickValues = _, scaleBar) : tickValues; | ||
| } | ||
| scaleBar.milesTickValues = function(_) { | ||
| return arguments.length ? (milesTickValues = _, scaleBar) : milesTickValues; | ||
| scaleBar.label = function(_) { | ||
| return arguments.length ? (label = _, scaleBar) : label; | ||
| } | ||
@@ -188,7 +181,14 @@ | ||
| scaleBar.scaleFactor = function(_) { | ||
| return arguments.length ? (scaleFactor = _, scaleBar) : scaleFactor; | ||
| } | ||
| function countDigits(_){ | ||
| return Math.floor(_).toString().length; | ||
| } | ||
| function capitalizeFirstLetter(_) { | ||
| return _.charAt(0).toUpperCase() + _.slice(1); | ||
| } | ||
| return scaleBar; | ||
| } |
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No alert changes
Improved metrics
- Total package byte prevSize
- increased by77.79%
294622
- Number of package files
- increased by20%
12
- Number of lines in readme file
- increased by12.78%
150
No dependency changes