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index.js
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index.js
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let width;
let height;
let margin = { top: 20, right: 30, bottom: 90, left: 30 };
let xScale; // scale for labels on x-axis -- reference scale
let unitXScale; // scale for unit vis on x-axis -- reference scale
let unitYScale; // scale for unit vis on y-axis
let xAxis;
let numRowElements;
let colorXScale;
let attribute = null;
let sizeXScale;
let legendSize;
let tooltipTriggerList;
let col_values;
let col_types;
let filtering = false;
let newSize;
let change = 0;
let currChange;
let colorEncodingAttribute = false;
let tooltip;
let legendLinear;
let tip;
let cols_lower, cols;
let all_shapes = [squareShape, triangleShape, circleShape, crossShape, diamondShape, starShape, wyeShape];
// actions for which undo/redo is defined
let undoActionsList = ['changeColor', 'changeShape', 'changeSize', 'filterData', 'default'];
/* list of {data: {…}, attrs: {…}}
* store attributes (such as color, shape, atrribute that it's grouped with etc) for each data point
*/
let dataset = [];
let columns = [];
let isNumericScale = false;
let prevRadio = null;
// Holds the current data displayed in the chart
let currentData = [];
let allData = []; // holds all attributes
let curDataAttrs = {};
// Undo/Redo
let undoStack = [];
let redoStack = [];
// settings
let duration = 1;
let circleRadius = 7;
let unitRadius = 7;
let attrValuesCount; // keeps count of values in the grouped attribute
let sortedAxisLabels; // keeps sorted order of atrributes on x axis
const defSizeRatio = 9;
const defaultColor = "#0067cd";
// selections
let selection = []; // all selected unit vis
let shapeNum = 7;
/* Multi-touch or multi-pointers */
// Preserving a pointer's event state during various event phases
// Event caches, one per touch target
let evCacheContent = [];
let evCacheXAxis = [];
let prevDiff = -1; // for pinch-zoom -- any direction
let lastZoomState;
let onePointerTappedTwice = false;
let twoPointersTappedTwice = false;
// user preferences
let useCustomIcons = false;
let iconSize = 2 * circleRadius; //default
let unitVisHtMargin = iconSize;
let unitVisPadding = 1.5;
let imgSVGs = [];
let attrSortOrder = 0; // 0: ascending, 1: descending
let currSize = 20;
const numInitialShapes = 7;
let firstSizeChange = false;
let array = [d3.csv('dataset/candy-data.csv'), d3.xml('images/candy.svg')]
Promise.all(array).then(function (data1) {
let imgSVG = data1[1];
let svgNode = imgSVG.getElementsByTagName("svg")[0];
d3.select(svgNode)
.attr('height', 18)
.attr('width', 18)
// .style('fill', 'brown');
iconSize = 20;
imgSVGs.push(svgNode);
let data = data1;
data[0].forEach(d => {
for (let attr in d) {
if (attr !== 'Candy')
d[attr] = +d[attr];
}
});
dataset = data[0];
allData = setData(data[0]).slice();
columns = data[0].columns;
for (let i = 0; i < 7; i++) {
d3.select("#shapes")
.append("svg")
.attr("width", "50")
.attr("height", "20")
.style("transform", "translateX(8px)")
// .style("padding", "20px")
.style("scale", "200%")
.style("margin-top", "30px")
.append("path")
.attr("class", "pickShape")
.style("cursor", "pointer")
.attr("id", (d) => "shape-" + i)
.attr("d", all_shapes[i])
//.attr("d", i)
.attr("fill", defaultColor)
.attr("transform", "translate(10, 10)")
.on('pointerdown', function (e, d) {
// console.log("att", e['target']['id']);
//findShape(e['target']['id']);
changeShape(e['target']['id'].slice(6));
})
}
// console.log("imgSVG ", imgSVG, svgNode);
lastShape = d3.select("#shapes")
.append("xhtml:body")
.attr("id", "shape-" + shapeNum)
// .html(imgSVG['activeElement']['outerHTML'])
.html(svgNode.outerHTML)
.style("display", "inline");
d3.selectAll("#shape-" + shapeNum + " svg")
.attr("id", "shape-" + shapeNum)
.style("margin-top", "30px")
// .style("margin-right", "15px")
.attr("width", "26px")
.style("scale", "180%");
lastShape.on('pointerdown', function (e, d) {
changeShape(e['target']['parentElement']['id'].slice(6));
})
d3.select("#shapes body svg")
// .style("fill", defaultColor)
// CHANGE LATER?: initially, use chocolate as an attribute to group on
//attribute = 'fruity';
//attribute = columns[11];
attribute = columns[1];
//attribute = columns[0];
//attribute = 'sugarPercent';
//attribute = 'winPercent';
//attribute = 'pricePercent';
setNumericScale();
groupByAttribute(currentData, attribute);
// Niv
cols = Object.keys(allData[0].data);
col_values = Object.values(allData[0].data)
col_types = col_values.map((d) => typeof (d));
overview(allData.length, cols.length);
tabulate(allData, cols);
createAccordion(allData, cols);
createDropDown(allData, cols);
//cols = Object.keys(currentData[0].data);
//visualize(11); //groupByAttribute, create, update
createVisualization();
updateVisualization();
document.querySelector("#colorPicker").onchange = e => {
colorEncodingAttribute = false;
// console.log(e.target.value);
changeColor(e.target.value);
d3.selectAll("#dropdownMenuButton3").text("None");
}
document.getElementById("pickSize").value = parseFloat(currSize);
document.querySelector("#pickSize").onchange = e => {
// console.log(e.target.value);
currSize = e.target.value;
changeSize(e.target.value);
d3.selectAll("#dropdownMenuButton5").text("None");
// console.log(currSize);
}
d3.select("#dropdownMenuButton1")
.text(attribute);
d3.selectAll("#dropdownMenuButton3,#dropdownMenuButton4,#dropdownMenuButton5,#dropdownMenuButton6,#dropdownMenuButton7")
.text("None");
d3.select('#x-axis-label')
.text(attribute);
// tooltipTriggerList = [].slice.call(
// document.querySelectorAll('[data-toggle="tooltip"]')
// );
// tooltipTriggerList.map(function (tooltipTriggerEl) {
// return new bootstrap.Tooltip(tooltipTriggerEl);
// });
document.addEventListener("contextmenu", function(event) {event.preventDefault();}, false);
d3.select("#selection")
.append("xhtml:body")
.attr("id", "selection-text")
.html("<br>Lasso-select datapoints to view stats.<br>");
addActionToUndoStack('default');
// var linear = d3.scaleLinear()
// .domain([0,10])
// .range(["rgb(46, 73, 123)", "rgb(71, 187, 94)"]);
});
function createVisualization() {
// Initialize variables
height = window.innerHeight - margin.top - margin.bottom;
width = window.innerWidth - d3.select('#side-panel').node().getBoundingClientRect().width - margin.left - margin.right;
unitXScale = d3.scaleLinear();
unitYScale = d3.scaleLinear();
//d3.select("#chart").attr("viewBox", [0, 0, width + margin.left + margin.right, height + margin.top + margin.bottom])
d3.select("svg#chart")
.attr("viewBox", [0, 0, width + margin.left + margin.right, height + margin.top + margin.bottom])
// create a rectangle region that allows for lasso selection
d3.select("#lasso-selectable-area rect")
.attr('fill', 'transparent')
.attr('width', width + margin.left + margin.right)
.attr('height', margin.top + height);
d3.select('#chart-content')
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.select('#x-axis-content')
.attr("transform", "translate(" + margin.left + "," + (margin.top + height) + ")");
// create a rectangluar region that clips everything outside it -- this is to show chart content that is only inside this region on zoom
d3.select('svg#chart').append('defs')
.append('clipPath')
.attr('id', 'clipx')
.append('rect')
.attr('x', -20)
.attr('y', 0)
.attr('width', width + 40)
.attr('height', height);
// Enable Lasso selection for unit visualization -- for the svg and the units within it
lasso.targetArea(d3.select('#lasso-selectable-area'))
.items(d3.selectAll('#chart-content .unit'));
d3.select("#chart").call(lasso).call(chartZoom);
}
function updateVisualization() {
//unitVisPadding = 1.5; //pixelsd
setNumericScale();
// set the x scale based on type of data
if (isNumericScale) { // numeric scale
xScale = d3.scaleLinear();
let minMax = d3.extent(currentData, function (d) {
return d.data[attribute];
});
// xScale.domain(minMax).range([0, width]); // takes number as input
// sort
if (attrSortOrder == 0) {
xScale.domain(minMax).range([0, width-20]) // takes number as input
}
else xScale.domain(minMax.reverse()).range([0, width-20]);
} else { // categorical scale (yes/no)
xScale = d3.scaleBand();
// sort: determine order of columns
if (attrSortOrder == 0)
sortedAxisLabels.sort((a, b) => a.attrName.localeCompare(b.attrName));
else sortedAxisLabels.sort((a, b) => b.attrName.localeCompare(a.attrName));
//xScale.domain(Object.keys(attrValuesCount)).range([0, width]).paddingInner(.7).paddingOuter(0.7); // takes string as input
xScale.domain(sortedAxisLabels.map(d => d.attrValue)).range([0, width-20]).paddingInner(.7).paddingOuter(0.7); // takes string as input
// set number of elements in each column
// get max size in dataset
numRowElements = Math.floor((xScale.bandwidth() - unitVisPadding) / ((2 * circleRadius) + unitVisPadding));
}
/* let the number of elements per row in each column be at least 1 */
numRowElements = numRowElements > 1 ? numRowElements : 1;
/* x-scale of the attributes */
unitXScale.domain([0, numRowElements]);
let maxAttributeValueCount = Math.max(...Object.values(attrValuesCount));
//unitVisHtMargin = iconSize;
let yScaleHeight = 2 * circleRadius * (maxAttributeValueCount / numRowElements) * unitVisPadding;
//let yScaleHeight = 2 * unitSize * (maxAttributeValueCount / numRowElements) * unitVisPadding;
unitYScale.domain([0, Math.ceil(maxAttributeValueCount / numRowElements)])
.range([height - unitVisHtMargin, height - unitVisHtMargin - yScaleHeight]);
// add x-axis
xAxis = d3.axisBottom(xScale).tickSize(4);
d3.select('.unit-vis')
.attr('clip-path', 'url(#clipx)');
d3.select('.x-axis')
.call(xAxis)
.style("font-size", "1em");
if (sortedAxisLabels.length > 5) {
d3.select('.x-axis')
.selectAll('text')
.attr("transform", "rotate(-45)")
.style("text-anchor", "end")
if (sortedAxisLabels.length > 30) {
d3.select('.x-axis')
.style("font-size", "0.5em");
}
}
let attrs = sortedAxisLabels.map(function (d, i) {
return d.attrName;
});
if (!isNumericScale)
d3.select('.x-axis')
.selectAll("text")
//.text((d, i) => xAxesLabels[i]);
.text((d, i) => attrs[i]);
// Update data in the visualization
updateUnitViz();
// Update x-axis label
d3.select('#x-axis-label')
.text(attribute)
.attr("x", width / 2)
.attr("y", margin.top + margin.bottom - 40)
.attr("text-anchor", "middle")
.attr("font-size", "1.2em");
defineLassoSelection();
// displayLegend();
}
function defineLassoSelection() {
lasso.items(d3.selectAll('#chart-content .unit'));
}
function updateUnitViz(tx = 1, tk = 1, shapesData = [], SVGsData = []) {
if (shapesData.length == 0 && SVGsData.length == 0) {
for (let d of currentData) {
if (curDataAttrs[d.id].shapeId < numInitialShapes)
shapesData.push(d);
else SVGsData.push(d);
}
}
// update paths
d3.selectAll("#chart-content .unit-vis")
.selectAll('path.unit')
.data(shapesData, d => d.id)
.join("path")
.attr("class", "unit")
.attr("id", d => `unit-icon-${d.id}`)
.attr('d', function (d) {
return all_shapes[curDataAttrs[d.id].shapeId].size(curDataAttrs[d.id].size * defSizeRatio)();
})
//.style('fill', d => curDataAttrs[d.id].color)
.style('fill', function (d) {
return curDataAttrs[d.id].color;
})
// .attr("data-toggle", "tooltip")
// .attr("data-placement", "top")
// .attr("title", d => d['data']['Candy'])
.attr('transform', d => plotXY(d, tx, tk))
.on("pointerdown", function (e, d) {
let positions = returnXY(d, tx, tk);
d3.select("#tool-tip")
.style("left", positions[0] + "px")
.style("top", positions[1] + "px")
.append("p")
.style("opacity", "1")
.html(d['data']['Candy'])
})
.on("pointerout", function (e, d) {
// console.log("pointerout")
d3.select("#tool-tip p")
.remove();
})
// .on("mouseover", function(e, d){
// console.log("pointerdown")
// let positions = returnXY(d, tx, tk);
// d3.select("#tool-tip")
// .style("left", positions[0] + "px")
// .style("top", positions[1] + "px")
// .append("p")
// .style("opacity", "1")
// .attr("duration", "100")
// .html(d['data']['Candy'])
// })
// .on("mouseout", function(e, d){
// console.log("pointerout")
// d3.select("#tool-tip p")
// .remove();
// })
// update gs
d3.selectAll("#chart-content .unit-vis")
.selectAll('g.unit')
.data(SVGsData, function (d) {
return d.id
}).join("g") //image
.attr("class", "unit")
.attr("id", d => `unit-icon-${d.id}`)
// .attr("data-toggle", "tooltip")
// .attr("data-placement", "top")
// .attr("title", d => d['data']['Candy'])
.attr('transform', d => `${plotXY(d, tx, tk)} translate(-10, -10)`)
.on("pointerdown", function (e, d) {
// console.log("pointerdown")
let positions = returnXY(d, tx, tk);
d3.select("#tool-tip")
.style("left", positions[0] + "px")
.style("top", positions[1] + "px")
.append("p")
.style("opacity", "1")
.html(d['data']['Candy'])
})
.on("pointerout", function (e, d) {
// console.log("pointerout")
d3.select("#tool-tip p")
.remove();
})
// adds svgs to gs -- while adding back old svgs on filter, it retains the properties of the unit vises
// note: this only appends svgs to newly created gs. This won't update an svg.
//let newgs = d3.selectAll("g.unit:not([svg])");
//for (let d of newgs) {
for (let d of d3.selectAll('g.unit')) {
let id = d.getAttribute('id').split('-').at(-1);
// remove svg from g id, and append new svg
if (d3.select(`g.unit#unit-icon-${id} svg`).empty()) {
let s = imgSVGs[curDataAttrs[id].shapeId - numInitialShapes];
// clones whole subtree -- has to be cloned for each instance of the candy
d3.select(s).attr('id', `unit-${id}`)
.attr('class', 'custom-icon')
.style('fill', curDataAttrs[id].color)
.attr('height', curDataAttrs[id].size)
.attr('width', curDataAttrs[id].size);
d3.select(`g.unit#unit-icon-${id}`).node().append(s.cloneNode(true));
}
// update color/size svgs -- for undo/redo
else {
// clones whole subtree -- has to be cloned for each instance of the candy
d3.select(`#unit-${id}`)
.style('fill', curDataAttrs[id].color)
.attr('height', curDataAttrs[id].size)
.attr('width', curDataAttrs[id].size);
}
}
d3.selectAll(".unit svg rect").attr("fill", "none");
defineLassoSelection();
// d3.selectAll('path.unit')
// .attr("data-toggle", "tooltip")
// .attr("data-placement", "top")
// .attr("title", "Just checking!");
// d3.selectAll('.custom-icon path')
// .attr("data-toggle", "tooltip")
// .attr("data-placement", "top")
// .attr("title", "Just checking!");
}
// function showToolTip(id){
// d3.select("#unit-icon-" + id)
// .attr("data-toggle", "tooltip")
// }
function plotXY(d, tx = 1, tk = 1) {
let x, y;
if (attribute != null) {
let order = curDataAttrs[d.id]['groupBy'].order;
if (!isNumericScale) {
// update the range of x-scale for unit vis to the x value of the column
bandwidth = xScale.bandwidth() * 2;
unitXScale.range([xScale(String(d.data[attribute])),
xScale(String(d.data[attribute])) + bandwidth]);
x = unitXScale((order - 1) % numRowElements);
} else {
x = xScale(d.data[attribute]); // numeric scale
}
y = unitYScale(Math.floor((order - 1) / numRowElements));
}
return `translate(${tx + (x * tk)}, ${y})`;
}
function returnXY(d, tx = 1, tk = 1) {
let x, y;
if (attribute != null) {
let order = curDataAttrs[d.id]['groupBy'].order;
if (!isNumericScale) {
// update the range of x-scale for unit vis to the x value of the column
bandwidth = xScale.bandwidth() * 2;
unitXScale.range([xScale(String(d.data[attribute])),
xScale(String(d.data[attribute])) + bandwidth]);
x = unitXScale((order - 1) % numRowElements);
} else {
x = xScale(d.data[attribute]); // numeric scale
}
y = unitYScale(Math.floor((order - 1) / numRowElements));
}
let left = tx + (x * tk)
// console.log("left, ", left, y)
return [parseInt(tx + (x * tk)), (y - 50)];
}
/* Helper functions */
function cloneObj(obj) {
return JSON.parse(JSON.stringify(obj))
}
/* Read SVG */
function readFile(e) {
let file = document.querySelector('input[type=file]').files[0];
let reader = new FileReader();
reader.onload = (e) => {
importImgSVG(e.target.result);
}
reader.readAsText(file);
}
function importImgSVG(data) {
let parser = new DOMParser();
let imgSVG = parser.parseFromString(data, "image/svg+xml");
let svgNode = imgSVG.getElementsByTagName("svg")[0];
d3.select(svgNode)
.attr('height', 18)
.attr('width', 18);
imgSVGs.push(svgNode);
shapeNum += 1;
if (svgNode) {
lastShape = d3.select("#shapes")
.append("xhtml:body")
.attr("id", "shape-" + shapeNum)
.html(svgNode.outerHTML)
.style("display", "inline");
d3.selectAll("#shape-" + shapeNum + " svg")
.attr("id", "shape-" + shapeNum)
.style("margin-top", "30px")
.style("scale", "180%")
// .style("width", "45px")
.style("margin-left", "20px")
// .style("margin-right", "15px")
.attr("width", "26px")
lastShape.on('pointerdown', function (e, d) {
changeShape(e['target']['parentElement']['id'].slice(6));
})
// d3.select("#shapes body svg")
// .style("fill", defaultColor);
}
}
function filterData(attr, lowValue, highValue) {
// remove the selcted elements from current data
//selection
// between a range (including)
currentData = [];
for (let d of allData) {
if (d.data[attr] >= lowValue && d.data[attr] <= highValue) {
currentData.push(d);
}
}
groupByAttribute(currentData, attribute);
updateVisualization();
addActionToUndoStack('filterData');
}
function sortXAxis(attr) {
attribute = attr;
setNumericScale();
groupByAttribute(currentData, attribute);
updateVisualization();
addActionToUndoStack('sortXAxis');
// restore to the last zoomed state
if (lastZoomState !== {}) zoomed(lastZoomState);
}
/* Allow users to filter by only 1 attribute at a time? */
function groupByAttribute(data, attribute) {
// find unique attribute values
let attrValues = [];
for (let dataPt of data) {
if (!attrValues.includes(dataPt.data[attribute])) {
attrValues.push(dataPt.data[attribute]);
}
}
attrValues.sort();
// initialize counter to zero for attribute value
attrValuesCount = {};
for (let attr_value of attrValues) {
attrValuesCount[attr_value] = 0;
}
// Hard-coded for candy dataset --> eg: 0 for no chocolate, 1 for chocolate
let xAxesLabels = [];
if (!isNumericScale) {
if (Object.keys(attrValuesCount).length === 2) {
xAxesLabels[0] = `No ${attribute}`;
xAxesLabels[1] = `${attribute}`;
} else {
xAxesLabels = attrValues;
}
}
sortedAxisLabels = [];
if (!isNumericScale) {
let attrVals = Object.keys(attrValuesCount);
for (let i = 0; i < attrVals.length; i++) {
sortedAxisLabels.push({ attrName: xAxesLabels[i], attrValue: attrVals[i] });
}
}
// keep count of element's occurrence in each attribute value and store for grouping
for (let dataPt of data) {
attrValuesCount[dataPt.data[attribute]]++;
curDataAttrs[dataPt.id]['groupBy'] = {
'order': attrValuesCount[dataPt.data[attribute]]
};
}
return data;
}
// called once on load
function setData(d) {
let i = 0;
curDataAttrs = {};
currentData = [];
for (let dataPt of d) {
currentData.push({ id: i, data: dataPt });
curDataAttrs[i] = { color: defaultColor, shapeId: 2, size: 20 };
i++;
}
return currentData;
}
/*
* Register events handlers for pointers (touch, pen, mouse, etc)
* Events: pointerdown, pointermove, pointerup (pointercancel, pointerout, pointerleave)
* Source: https://developer.mozilla.org/en-US/docs/Web/API/Pointer_events/Multi-touch_interaction
*/
function setHandlers(name) {
// Install event handlers for the given element
const el = document.getElementById(name);
el.onpointerdown = pointerdownHandler;
// Use same handler for pointer{up,cancel,out,leave} events since
// the semantics for these events - in this app - are the same.
el.onpointerup = pointerupHandler;
el.onpointercancel = pointerupHandler;
//el.onpointerout = pointerupHandler; // moving to descendent (unit circles) triggers pointerout
el.onpointerleave = pointerupHandler;
// el.onpointermove = pinchZoom(ev, 'xy');
// console.log("cache", evCacheContent.length);
el.onpointermove = fingerSwipe;
// move handlers for different targets
// if (name === 'lasso-selectable-area')
// el.onpointermove = pinchZoomXY;
/*else if (name === 'x-axis-content')
el.onpointermove = pinchZoomX; */
}
function init() {
setHandlers("lasso-selectable-area");
setHandlers("x-axis-content");
}
function pointerdownHandler(ev) {
/* pointers can be: finger(s) - touch, pen, etc.
* mouse hover won't be a pointerdown
* mouse click counts as a pointerdown
* */
ev.preventDefault();
//evCache.push(ev);
// console.log("ev push", ev);
pushEvent(ev);
//updateBackground(ev);
// check if this is a double tap
doubleTapHandler(ev);
// swipe left/right handler
startFingerSwipe(ev);
// console.log("inside pointerdown handler")
}
function doubleTapHandler(ev) {
/* pointers can be: finger(s) - touch, pen, etc.
* mouse hover won't be a pointerdown
* mouse click counts as a pointerdown
* */
// detect pointer double taps on chart region
detectOnePointerDoubleTap();
detectTwoPointersDoubleTap();
detectMultiplePointersOnScreen();
prevDiff = -1;
// console.log("inside doubetap handler")
}
function detectOnePointerDoubleTap() {
// within 300 milli seconds of a single tap and it was not a double tap previously
if (!onePointerTappedTwice && evCacheContent.length === 1 && !twoPointersTappedTwice) {
onePointerTappedTwice = true;
setTimeout(function () { onePointerTappedTwice = false; }, 300);
return false;
}
// action to do on double tap
if (onePointerTappedTwice && evCacheContent.length === 1 && !twoPointersTappedTwice) {
console.log('1 pointer double tap');
console.log(selection);
// reset value for next double tap
onePointerTappedTwice = false;
}
}
function detectTwoPointersDoubleTap() {
//console.log(evCacheContent)
if (!twoPointersTappedTwice && evCacheContent.length === 2) {
twoPointersTappedTwice = true;
setTimeout(function () { twoPointersTappedTwice = false; }, 300);
return false;
}
// action to do on double tap
if (twoPointersTappedTwice && evCacheContent.length === 2) {
resetZoom();
console.log('two pointer double tap');
// reset value for next double tap
twoPointersTappedTwice = false;
}
}
// indicates whether there was multiples pointers on screen in the last 200 ms
var multiplePtrsInLast400ms = false;
function detectMultiplePointersOnScreen() {
// lasso will be behind by 400ms in case user uses a multiple pointer gesture followed by lasso selection within 400ms
if (!multiplePtrsInLast400ms && evCacheContent.length > 1) {
multiplePtrsInLast400ms = true; // this value holds only for 400 ms
setTimeout(function () { multiplePtrsInLast400ms = false; }, 400);
return false;
}
}
// function pinchZoomXY(ev) {
// ev.preventDefault();
// pinchZoom(ev, 'xy')
// //updateBackground(ev);
// }
/* function pinchZoomX(ev) {
ev.preventDefault();
pinchZoom(ev, 'x')
//updateBackground(ev);
} */
let chartZoom = d3.zoom()
.on('zoom', zoomed);
function zoomed(e) {
if (e) {
lastZoomState = cloneObj(e);
let t = e.transform;
setZoom(t);
// transform circles along x-axis only
updateUnitViz(t.x, t.k);
}
};
function setZoom(t) {
let gXAxis = d3.select('.x-axis');
if (isNumericScale) {
// numeric scale
// create new scale oject based on event
var new_xScale = t.rescaleX(xScale);
// update axes
gXAxis.call(xAxis.scale(new_xScale));
} else {
// categorical scale
// transform x-axis g tag
gXAxis.attr("transform", d3.zoomIdentity.translate(t.x, 0).scale(t.k))
.attr('stroke-width', '0.05em');
if (sortedAxisLabels.length > 5) {
gXAxis.selectAll('text')
.attr("transform", `${d3.zoomIdentity.scale(1 / t.k)} rotate(-45)`)
.style("text-anchor", "end")
if (sortedAxisLabels.length > 30) {
gXAxis
.style("font-size", "0.5em");
}
} else {
// transform texts
gXAxis.selectAll("text")
.attr("transform", `${d3.zoomIdentity.scale(1 / t.k)} `);
}
}
}
function resetZoom() {
let chart = d3.select("#chart");
chart.transition().duration(750).call(
chartZoom.transform,
d3.zoomIdentity,
d3.zoomTransform(chart.node()).invert([width / 2, height / 2])
);
//chart.transition().duration(750).call(chartZoom.transform, d3.zoomIdentity);
}
function setNumericScale() {
if (['Win Percent', 'Sugar Percent', 'Price Percent'].includes(attribute))
isNumericScale = true;
else isNumericScale = false;
}
var prevPotrLoc = undefined; // pointer 0
function startFingerSwipe(ev) {
if (evCacheContent.length === 4) {
if (prevPotrLoc === undefined || prevPotrLoc.length == 2 || prevPotrLoc.length == 3) {
const evCache = getCache(ev);
const index = evCache.findIndex((cachedEv) => cachedEv.pointerId === ev.pointerId);
evCache[index] = ev;
// console.log("three swipe started", ev, evCache[0], evCache[1], evCache[2]);
prevPotrLoc = [{ x: evCache[0].clientX, y: evCache[0].clientY }, { x: evCache[1].clientX, y: evCache[1].clientY }, { x: evCache[2].clientX, y: evCache[2].clientY }, { x: evCache[3].clientX, y: evCache[3].clientY }];
// console.log(prevPotrLoc);
}
// ev.preventDefault();
// console.log("four!", evCacheContent);
// fingerSwipe();
} else
if (evCacheContent.length === 3) {
if (prevPotrLoc === undefined || prevPotrLoc.length == 2) {
const evCache = getCache(ev);
const index = evCache.findIndex((cachedEv) => cachedEv.pointerId === ev.pointerId);
evCache[index] = ev;
// console.log("three swipe started", ev, evCache[0], evCache[1], evCache[2]);
prevPotrLoc = [{ x: evCache[0].clientX, y: evCache[0].clientY }, { x: evCache[1].clientX, y: evCache[1].clientY }, { x: evCache[2].clientX, y: evCache[2].clientY }];
// console.log(prevPotrLoc);
}
// ev.preventDefault();
// console.log("three!", evCacheContent);
// fingerSwipe();
}
else if (evCacheContent.length === 2) {
if (prevPotrLoc === undefined) {
const evCache = getCache(ev);
const index = evCache.findIndex((cachedEv) => cachedEv.pointerId === ev.pointerId);
evCache[index] = ev;
// console.log("two swipe started", ev, evCache[0], evCache[1]);
prevPotrLoc = [{ x: evCache[0].clientX, y: evCache[0].clientY }, { x: evCache[1].clientX, y: evCache[1].clientY }];
// console.log(prevPotrLoc);
// prevDiff = -1;
}
// console.log("two!", evCacheContent);
// twoFingerSwipe();
}
}
function fingerSwipe(ev) {
if (evCacheContent.length == 4) {
const evCache = getCache(ev);
// console.log("getcache", ev, evCache[0], evCache[1], evCache[2]);
if (ev != undefined && evCache && evCache.length === 4) {
console.log("four finger swipe")
const index = evCache.findIndex((cachedEv) => cachedEv.pointerId === ev.pointerId);
evCache[index] = ev;
// console.log("swipe ended", ev, evCache[0], evCache[1], evCache[2]);
// If two pointers are down and the distance between each pointer move is positive/negative along an axis, determine swipe direction
// Calculate the distance between the previous pointer location and current
if (prevPotrLoc === undefined) {
return;
}
// var x = ev.clientX;
// var y = ev.clientY;
// console.log("swipe ended", prevPotrLoc, ev.clientX, ev.clientY)
var xDiff = prevPotrLoc[0].x - ev.clientX;
var yDiff = prevPotrLoc[0].y - ev.clientY;
if (Math.abs(xDiff) > Math.abs(yDiff)) {
change = 0;
// console.log("inside three!!!")
if (xDiff > 0) {
/* right swipe: undo */
console.log('swipe left 4')
if(columns.indexOf(attribute)!=12){
updateXAxis(columns[columns.indexOf(attribute) + 1])
}
// redoAction();
} else if (xDiff < 0) {
/* left swipe: redo */
console.log('swipe right 4');
if(columns.indexOf(attribute)!=0){
updateXAxis(columns[columns.indexOf(attribute) - 1])
}
// undoAction();
}
}
/* reset values */
prevPotrLoc = undefined;
}
} else if (evCacheContent.length == 3) {
// console.log("inside three!")
// console.log("cache", evCacheContent.length);
const evCache = getCache(ev);
// console.log("getcache", ev, evCache[0], evCache[1], evCache[2]);
if (ev != undefined && evCache && evCache.length === 3) {
// console.log("inside three!!")
const index = evCache.findIndex((cachedEv) => cachedEv.pointerId === ev.pointerId);
evCache[index] = ev;
// console.log("swipe ended", ev, evCache[0], evCache[1], evCache[2]);
// If two pointers are down and the distance between each pointer move is positive/negative along an axis, determine swipe direction
// Calculate the distance between the previous pointer location and current
if (prevPotrLoc === undefined) {
return;
}
// var x = ev.clientX;
// var y = ev.clientY;
// console.log("swipe ended", prevPotrLoc, ev.clientX, ev.clientY)