vis.js is a dynamic, browser-based visualization library
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var query = null;
function load() {
selectDataType();
loadCsvExample();
loadJsonExample();
loadJavascriptExample();
loadGooglespreadsheetExample();
loadDatasourceExample();
draw();
}
/**
* Upate the UI based on the currently selected datatype
*/
function selectDataType() {
}
function round(value, decimals) {
return parseFloat(value.toFixed(decimals));
}
function loadCsvExample() {
var csv = "";
// headers
csv += '"x", "y", "value"\n';
// create some nice looking data with sin/cos
var steps = 30;
var axisMax = 314;
var axisStep = axisMax / steps;
for (var x = 0; x < axisMax; x+=axisStep) {
for (var y = 0; y < axisMax; y+=axisStep) {
var value = Math.sin(x/50) * Math.cos(y/50) * 50 + 50;
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(value, 2) + '\n';
}
}
document.getElementById("csvTextarea").innerHTML = csv;
// also adjust some settings
document.getElementById("style").value = "surface";
document.getElementById("verticalRatio").value = "0.5";
document.getElementById("xLabel").value = "x";
document.getElementById("yLabel").value = "y";
document.getElementById("zLabel").value = "value";
document.getElementById("filterLabel").value = "";
document.getElementById("legendLabel").value = "";
drawCsv();
}
function loadCsvAnimationExample() {
var csv = "";
// headers
csv += '"x", "y", "value", "time"\n';
// create some nice looking data with sin/cos
var steps = 20;
var axisMax = 314;
var tMax = 31;
var axisStep = axisMax / steps;
for (var t = 0; t < tMax; t++) {
for (var x = 0; x < axisMax; x+=axisStep) {
for (var y = 0; y < axisMax; y+=axisStep) {
var value = Math.sin(x/50 + t/10) * Math.cos(y/50 + t/10) * 50 + 50;
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(value, 2) + ', ' + t + '\n';
}
}
}
document.getElementById("csvTextarea").innerHTML = csv;
// also adjust some settings
document.getElementById("style").value = "surface";
document.getElementById("verticalRatio").value = "0.5";
document.getElementById("animationInterval").value = 100;
document.getElementById("xLabel").value = "x";
document.getElementById("yLabel").value = "y";
document.getElementById("zLabel").value = "value";
document.getElementById("filterLabel").value = "time";
document.getElementById("legendLabel").value = "";
drawCsv();
}
function loadCsvLineExample() {
var csv = "";
// headers
csv += '"sin(t)", "cos(t)", "t"\n';
// create some nice looking data with sin/cos
var steps = 100;
var axisMax = 314;
var tmax = 4 * 2 * Math.PI;
var axisStep = axisMax / steps;
for (t = 0; t < tmax; t += tmax / steps) {
var r = 1;
var x = r * Math.sin(t);
var y = r * Math.cos(t);
var z = t;
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(z, 2) + '\n';
}
document.getElementById("csvTextarea").innerHTML = csv;
// also adjust some settings
document.getElementById("style").value = "line";
document.getElementById("verticalRatio").value = "1.0";
document.getElementById("showPerspective").checked = false;
document.getElementById("xLabel").value = "sin(t)";
document.getElementById("yLabel").value = "cos(t)";
document.getElementById("zLabel").value = "t";
document.getElementById("filterLabel").value = "";
document.getElementById("legendLabel").value = "";
drawCsv();
}
function loadCsvMovingDotsExample() {
var csv = "";
// headers
csv += '"x", "y", "z", "color value", "time"\n';
// create some shortcuts to math functions
var sin = Math.sin;
var cos = Math.cos;
var pi = Math.PI;
// create the animation data
var tmax = 2.0 * pi;
var tstep = tmax / 75;
var dotCount = 1; // set this to 1, 2, 3, 4, ...
for (var t = 0; t < tmax; t += tstep) {
var tgroup = parseFloat(t.toFixed(2));
var value = t;
// a dot in the center
var x = 0;
var y = 0;
var z = 0;
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(z, 2) + ', ' + round(value, 2)+ ', ' + round(tgroup, 2) + '\n';
// one or multiple dots moving around the center
for (var dot = 0; dot < dotCount; dot++) {
var tdot = t + 2*pi * dot / dotCount;
//data.addRow([sin(tdot), cos(tdot), sin(tdot), value, tgroup]);
//data.addRow([sin(tdot), -cos(tdot), sin(tdot + tmax*1/2), value, tgroup]);
var x = sin(tdot);
var y = cos(tdot);
var z = sin(tdot);
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(z, 2) + ', ' + round(value, 2)+ ', ' + round(tgroup, 2) + '\n';
var x = sin(tdot);
var y = -cos(tdot);
var z = sin(tdot + tmax*1/2);
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(z, 2) + ', ' + round(value, 2)+ ', ' + round(tgroup, 2) + '\n';
}
}
document.getElementById("csvTextarea").innerHTML = csv;
// also adjust some settings
document.getElementById("style").value = "dot-color";
document.getElementById("verticalRatio").value = "1.0";
document.getElementById("animationInterval").value = "35";
document.getElementById("animationAutoStart").checked = true;
document.getElementById("showPerspective").checked = true;
document.getElementById("xLabel").value = "x";
document.getElementById("yLabel").value = "y";
document.getElementById("zLabel").value = "z";
document.getElementById("filterLabel").value = "time";
document.getElementById("legendLabel").value = "color value";
drawCsv();
}
function loadCsvColoredDotsExample() {
var csv = "";
// headers
csv += '"x", "y", "z", "distance"\n';
// create some shortcuts to math functions
var sqrt = Math.sqrt;
var pow = Math.pow;
var random = Math.random;
// create the animation data
var imax = 200;
for (var i = 0; i < imax; i++) {
var x = pow(random(), 2);
var y = pow(random(), 2);
var z = pow(random(), 2);
var dist = sqrt(pow(x, 2) + pow(y, 2) + pow(z, 2));
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(z, 2) + ', ' + round(dist, 2)+ '\n';
}
document.getElementById("csvTextarea").innerHTML = csv;
// also adjust some settings
document.getElementById("style").value = "dot-color";
document.getElementById("verticalRatio").value = "1.0";
document.getElementById("showPerspective").checked = true;
document.getElementById("xLabel").value = "x";
document.getElementById("yLabel").value = "y";
document.getElementById("zLabel").value = "value";
document.getElementById("legendLabel").value = "distance"
document.getElementById("filterLabel").value = "";
drawCsv();
}
function loadCsvSizedDotsExample() {
var csv = "";
// headers
csv += '"x", "y", "z", "range"\n';
// create some shortcuts to math functions
var sqrt = Math.sqrt;
var pow = Math.pow;
var random = Math.random;
// create the animation data
var imax = 200;
for (var i = 0; i < imax; i++) {
var x = pow(random(), 2);
var y = pow(random(), 2);
var z = pow(random(), 2);
var dist = sqrt(pow(x, 2) + pow(y, 2) + pow(z, 2));
var range = sqrt(2) - dist;
csv += round(x, 2) + ', ' + round(y, 2) + ', ' + round(z, 2) + ', ' + round(range, 2)+ '\n';
}
document.getElementById("csvTextarea").innerHTML = csv;
// also adjust some settings
document.getElementById("style").value = "dot-size";
document.getElementById("verticalRatio").value = "1.0";
document.getElementById("showPerspective").checked = true;
document.getElementById("xLabel").value = "x";
document.getElementById("yLabel").value = "y";
document.getElementById("zLabel").value = "z";
document.getElementById("legendLabel").value = "range";
document.getElementById("filterLabel").value = "";
drawCsv();
}
function loadJsonExample() {
}
function loadJavascriptExample() {
}
function loadJavascriptFunctionExample() {
}
function loadGooglespreadsheetExample() {
}
function loadDatasourceExample() {
}
/**
* Retrieve teh currently selected datatype
* @return {string} datatype
*/
function getDataType() {
return "csv";
}
/**
* Retrieve the datatable from the entered contents of the csv text
* @param {boolean} [skipValue] | if true, the 4th element is a filter value
* @return {vis DataSet}
*/
function getDataCsv() {
var csv = document.getElementById("csvTextarea").value;
// parse the csv content
var csvArray = csv2array(csv);
var data = new vis.DataSet({});
var skipValue = false;
if (document.getElementById("filterLabel").value != "" && document.getElementById("legendLabel").value == "") {
skipValue = true;
}
// read all data
for (var row = 1; row < csvArray.length; row++) {
if (csvArray[row].length == 4 && skipValue == false) {
data.add({x:parseFloat(csvArray[row][0]),
y:parseFloat(csvArray[row][1]),
z:parseFloat(csvArray[row][2]),
style:parseFloat(csvArray[row][3])});
}
else if (csvArray[row].length == 4 && skipValue == true) {
data.add({x:parseFloat(csvArray[row][0]),
y:parseFloat(csvArray[row][1]),
z:parseFloat(csvArray[row][2]),
filter:parseFloat(csvArray[row][3])});
}
else if (csvArray[row].length == 5) {
data.add({x:parseFloat(csvArray[row][0]),
y:parseFloat(csvArray[row][1]),
z:parseFloat(csvArray[row][2]),
style:parseFloat(csvArray[row][3]),
filter:parseFloat(csvArray[row][4])});
}
else {
data.add({x:parseFloat(csvArray[row][0]),
y:parseFloat(csvArray[row][1]),
z:parseFloat(csvArray[row][2]),
style:parseFloat(csvArray[row][2])});
}
}
return data;
}
/**
* remove leading and trailing spaces
*/
function trim(text) {
while (text.length && text.charAt(0) == ' ')
text = text.substr(1);
while (text.length && text.charAt(text.length-1) == ' ')
text = text.substr(0, text.length-1);
return text;
}
/**
* Retrieve the datatable from the entered contents of the javascript text
* @return {vis Dataset}
*/
function getDataJson() {
var json = document.getElementById("jsonTextarea").value;
var data = new google.visualization.DataTable(json);
return data;
}
/**
* Retrieve the datatable from the entered contents of the javascript text
* @return {vis Dataset}
*/
function getDataJavascript() {
var js = document.getElementById("javascriptTextarea").value;
eval(js);
return data;
}
/**
* Retrieve the datatable from the entered contents of the datasource text
* @return {vis Dataset}
*/
function getDataDatasource() {
}
/**
* Retrieve a JSON object with all options
*/
function getOptions() {
return {
width: document.getElementById("width").value,
height: document.getElementById("height").value,
style: document.getElementById("style").value,
showAnimationControls: (document.getElementById("showAnimationControls").checked != false),
showGrid: (document.getElementById("showGrid").checked != false),
showPerspective: (document.getElementById("showPerspective").checked != false),
showShadow: (document.getElementById("showShadow").checked != false),
keepAspectRatio: (document.getElementById("keepAspectRatio").checked != false),
verticalRatio: document.getElementById("verticalRatio").value,
animationInterval: document.getElementById("animationInterval").value,
xLabel: document.getElementById("xLabel").value,
yLabel: document.getElementById("yLabel").value,
zLabel: document.getElementById("zLabel").value,
filterLabel: document.getElementById("filterLabel").value,
legendLabel: document.getElementById("legendLabel").value,
animationPreload: (document.getElementById("animationPreload").checked != false),
animationAutoStart:(document.getElementById("animationAutoStart").checked != false),
xCenter: Number(document.getElementById("xCenter").value) || undefined,
yCenter: Number(document.getElementById("yCenter").value) || undefined,
xMin: Number(document.getElementById("xMin").value) || undefined,
xMax: Number(document.getElementById("xMax").value) || undefined,
xStep: Number(document.getElementById("xStep").value) || undefined,
yMin: Number(document.getElementById("yMin").value) || undefined,
yMax: Number(document.getElementById("yMax").value) || undefined,
yStep: Number(document.getElementById("yStep").value) || undefined,
zMin: Number(document.getElementById("zMin").value) || undefined,
zMax: Number(document.getElementById("zMax").value) || undefined,
zStep: Number(document.getElementById("zStep").value) || undefined,
valueMin: Number(document.getElementById("valueMin").value) || undefined,
valueMax: Number(document.getElementById("valueMax").value) || undefined,
xBarWidth: Number(document.getElementById("xBarWidth").value) || undefined,
yBarWidth: Number(document.getElementById("yBarWidth").value) || undefined
};
}
/**
* Redraw the graph with the entered data and options
*/
function draw() {
return drawCsv();
}
function drawCsv() {
// Instantiate our graph object.
var graph = new vis.Graph3d(document.getElementById('graph'));
// retrieve data and options
var data = getDataCsv();
var options = getOptions();
// Draw our graph with the created data and options
graph.draw(data, options);
}
function drawJson() {
// Instantiate our graph object.
var graph = new vis.Graph3d(document.getElementById('graph'));
// retrieve data and options
var data = getDataJson();
var options = getOptions();
// Draw our graph with the created data and options
graph.draw(data, options);
}
function drawJavascript() {
// Instantiate our graph object.
var graph = new vis.Graph3d(document.getElementById('graph'));
// retrieve data and options
var data = getDataJavascript();
var options = getOptions();
// Draw our graph with the created data and options
graph.draw(data, options);
}
function drawGooglespreadsheet() {
// Instantiate our graph object.
drawGraph = function(response) {
document.getElementById("draw").disabled = "";
if (response.isError()) {
error = 'Error: ' + response.getMessage();
document.getElementById('graph').innerHTML =
"<span style='color: red; font-weight: bold;'>" + error + "</span>"; ;
}
// retrieve the data from the query response
data = response.getDataTable();
// specify options
options = getOptions();
// Instantiate our graph object.
var graph = new vis.Graph3d(document.getElementById('graph'));
// Draw our graph with the created data and options
graph.draw(data, options);
}
url = document.getElementById("googlespreadsheetText").value;
document.getElementById("draw").disabled = "disabled";
// send the request
query && query.abort();
query = new google.visualization.Query(url);
query.send(drawGraph);
}
function drawDatasource() {
// Instantiate our graph object.
drawGraph = function(response) {
document.getElementById("draw").disabled = "";
if (response.isError()) {
error = 'Error: ' + response.getMessage();
document.getElementById('graph').innerHTML =
"<span style='color: red; font-weight: bold;'>" + error + "</span>"; ;
}
// retrieve the data from the query response
data = response.getDataTable();
// specify options
options = getOptions();
// Instantiate our graph object.
var graph = new vis.Graph3d(document.getElementById('graph'));
// Draw our graph with the created data and options
graph.draw(data, options);
};
url = document.getElementById("datasourceText").value;
document.getElementById("draw").disabled = "disabled";
// if the entered url is a google spreadsheet url, replace the part
// "/ccc?" with "/tq?" in order to retrieve a neat data query result
if (url.indexOf("/ccc?")) {
url.replace("/ccc?", "/tq?");
}
// send the request
query && query.abort();
query = new google.visualization.Query(url);
query.send(drawGraph);
}