We Keep Coding

How to Add Point on Visualization: Area Chart

How to add a point inside the Google Charts Visualization: Area chart like the red point in the picture shown above and can i put some label above or beside the point?
Here is the code that outputs the chart above
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Output1');
data.addColumn('number', 'Height');
data.addColumn({type:'string', role:'annotation'});
data.addRows([
<?php echo"['', 2, null],"; ?>
<?php echo"['', 2, '1 Kpa ---------->'],"; ?>
<?php echo"['2', 1, '<---------- 2'],"; ?>
<?php echo"['3 σ', 0, '<---------- 3 σ']"; ?>
]);
var options = {
title: 'Total Stress',
hAxis: {title: '<-------- Direction', titleTextStyle: {color: '#333'}},
vAxis: { ticks: [{v:2, f:'1 Kpa ->'}, {v:1, f:'1 m'},{v:0, f:'length ^ 1 m'},{v:0, f:'1 m'}] }
};
var chart = new google.visualization.AreaChart(document.getElementById('total_stress'));
chart.draw(data, options);
}

you can use a ComboChart to combine series types
add another column to the data table for the point
in the options, define the series types, use 'scatter' for points
seriesType: 'area',
series: {
1: {
type: 'scatter'
}
}
see following working snippet...
google.charts.load('current', {
packages: ['corechart']
}).then(function () {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Output1');
data.addColumn('number', 'Height');
data.addColumn({type:'string', role:'annotation'});
data.addColumn('number', 'Scatter');
data.addRows([
['', 2, null, null],
['', 2, '1 Kpa ---------->', 1],
['2', 1, '<---------- 2', null],
['3 s', 0, '<---------- 3 s', null]
]);
var options = {
title: 'Total Stress',
hAxis: {title: '<-------- Direction', titleTextStyle: {color: '#333'}},
vAxis: { ticks: [{v:2, f:'1 Kpa ->'}, {v:1, f:'1 m'},{v:0, f:'length ^ 1 m'},{v:0, f:'1 m'}] },
seriesType: 'area',
series: {
1: {
type: 'scatter'
}
}
};
var chart = new google.visualization.ComboChart(document.getElementById('chart_div'));
chart.draw(data, options);
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

Google Visualization highlight single grid line

how can I highlight a single grid line? I would like to set an optical temperature limit at 35 ° C.
Thanks! I have now added it to my code, but it does not work .... do you see my mistake? Or did I not understand something in your explanation?
Here is the edited version :
//Google Chart
google.charts.load('current', {
callback: function drawChart(peanut) {
const div = document.createElement('div');
div.id = peanut.color + peanut.mac.split(':').join('');
$('#charts').appendChild(div);
peanut.data = new google.visualization.DataTable();
peanut.data.addColumn('datetime', 'Time');
peanut.data.addColumn('number', '🥜 ' + peanut.label);
for (var i = 0, len = localStorage.length; i < len; i++) {
let dateTime = new Date(parseInt(localStorage.key(i)));
let item = JSON.parse(localStorage.getItem(localStorage.key(i)));
if (item.peanutMac === peanut.mac) {
if (item.temperatureCelsius) {
let temperature = parseFloat(item.temperatureCelsius);
peanut.data.addRows([ [dateTime, temperature] ]);
} else if (item.alert) {
let data = parseInt(item.alert);
peanut.data.addRows([ [dateTime, data] ]);
}
}
}
if (peanut.type == 'thermo') {
peanut.chart = new google.visualization.LineChart($('#' + div.id));
peanut.chartOptions = {
interpolateNulls: true,
fontName: 'Roboto',
curveType: 'function',
colors: [peanut.rgbColor],
width: document.body.clientWidth,
height: (window.innerHeight - 224) / 2,
legend: 'none',
lineWidth: 3,
vAxis: {
format: '#.## °C',
ticks: [15.00, 20.00, 25.00, 30.00, 35.00, 40.00]
},
hAxis: {
gridlines: {
color: '#fff'
}
}
};
peanut.viewColumns = [];
$.each(new Array(data.getNumberOfColumns()), function (colIndex) {
peanut.viewColumns.push(colIndex);
});
peanut.viewColumns.push({
calc: function () {
return 35;
},
label: 'optical temperature limit',
type: 'number'
});
}
peanut.view = new google.visualiation.DataView(data);
peanut.view.setColumns(viewColumns);
if (peanut.data.getNumberOfRows()) {
peanut.chart.draw(peanut.view, peanut.chartOptions);
}
}
packages:['corechart', 'table']
});

add another series with the value set to 35 for all rows
here, a data view is used to add a calculated column for the optical temperature limit
google.charts.load('current', {
callback: function () {
var data = new google.visualization.DataTable();
data.addColumn('number', 'x');
data.addColumn('number', 'y0');
data.addColumn('number', 'y1');
data.addColumn('number', 'y2');
data.addRows([
[1, 32.8, 20.8, 21.8],
[2, 30.9, 29.5, 32.4],
[3, 25.4, 27, 25.7],
[4, 21.7, 28.8, 20.5],
[5, 21.9, 27.6, 20.4]
]);
var options = {
interpolateNulls: true,
fontName: 'Roboto',
curveType: 'function',
legend: 'none',
lineWidth: 3,
vAxis: {
format: '#.## °C',
ticks: [20.00, 25.00, 30.00, 35.00, 40.00]
},
hAxis: {
gridlines: {
color: '#fff'
}
}
};
var viewColumns = [];
$.each(new Array(data.getNumberOfColumns()), function (colIndex) {
viewColumns.push(colIndex);
});
viewColumns.push({
calc: function () {
return 35;
},
label: 'optical temperature limit',
type: 'number'
});
var view = new google.visualization.DataView(data);
view.setColumns(viewColumns);
var chart = new google.visualization.LineChart($('#chart').get(0));
chart.draw(view, options);
},
packages:['corechart', 'table']
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart"></div>

Its not the best and safest way but I didnt find something on the google documentation:
You could use Jquery for it Ive tried it on the example from google docs and it works click
var line = $("svg g line")[4]
$(line).attr('stroke','red');

A simple way is to set the vAxis baseline to the value you want, say 35, and change the baselineColor. There is no option to change the width of this line, however, so if you need that, you should follow the suggestion above to add a series just to draw this line, and set its lineWidth.

Annotation Google Chart API

i'm trying to use Google Chart API for building an Waterfall chart. I noticed that Candlestick/Waterfall charts are not supporting the annotations.
See this jsfiddle sample
google.charts.load('current', {'packages':['corechart']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Category');
data.addColumn('number', 'MinimumLevel');
data.addColumn('number', 'MinimumLevel1');
data.addColumn('number', 'MaximumLevel');
data.addColumn('number', 'MaximumLevel1');
data.addColumn({type: 'number', role: 'tooltip'});
data.addColumn({type: 'string', role: 'style'});
data.addColumn({type: 'number', role: 'annotation'});
data.addRow(['Category 1', 0 , 0, 5, 5, 5,'gray',5]);
data.addRow(['Category 2', 5 , 5, 10, 10, 10,'red',10]);
data.addRow(['Category 3', 10 , 10, 15, 15, 15,'blue',15]);
data.addRow(['Category 4', 15 , 15, 10, 10, 10,'yellow',10]);
data.addRow(['Category 5', 10 , 10, 5, 5, 5,'gray',5]);
var options = {
legend: 'none',
bar: { groupWidth: '60%' } // Remove space between bars.
};
var chart = new google.visualization.CandlestickChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
I would like to put the value of the 5th column at the top of every candlestick.
It should look like this :
Is there a way to do this?
Thanks

I add annotations to candlestick charts by adding annotations to a hidden scatter plot. You can set exactly where you want the annotations to sit by changing the plot.
google.charts.load('current', { 'packages': ['corechart'] });
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'Low');
data.addColumn('number', 'Open');
data.addColumn('number', 'Close');
data.addColumn('number', 'High');
data.addColumn('number'); //scatter plot for annotations
data.addColumn({ type: 'string', role: 'annotation' }); // annotation role col.
data.addColumn({ type: 'string', role: 'annotationText' }); // annotationText col.
var high, low, open, close = 160;
for (var i = 0; i < 10; i++) {
open = close;
close += ~~(Math.random() * 10) * Math.pow(-1, ~~(Math.random() * 2));
high = Math.max(open, close) + ~~(Math.random() * 10);
low = Math.min(open, close) - ~~(Math.random() * 10);
annotation = '$' + close;
annotation_text = 'Close price: $' + close;
data.addRow([new Date(2014, 0, i + 1), low, open, close, high, high, annotation, annotation_text]);
}
var view = new google.visualization.DataView(data);
var chart = new google.visualization.ComboChart(document.querySelector('#chart_div'));
chart.draw(view, {
height: 400,
width: 600,
explorer: {},
chartArea: {
left: '7%',
width: '70%'
},
series: {
0: {
color: 'black',
type: 'candlesticks',
},
1: {
type: 'scatter',
pointSize: 0,
targetAxisIndex: 0,
},
},
candlestick: {
color: '#a52714',
fallingColor: { strokeWidth: 0, fill: '#a52714' }, // red
risingColor: { strokeWidth: 0, fill: '#0f9d58' } // green
},
});
}
<script type="text/javascript"src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div" style="width: 900px; height: 500px;"></div>

just so happens, i ran into the same problem this week
so I added my own annotations, during the 'animationfinish' event
see following working snippet...
google.charts.load('current', {
callback: drawChart,
packages:['corechart']
});
function drawChart() {
var dataChart = new google.visualization.DataTable({"cols":[{"label":"Category","type":"string"},{"label":"Bottom 1","type":"number"},{"label":"Bottom 2","type":"number"},{"label":"Top 1","type":"number"},{"label":"Top 2","type":"number"},{"role":"style","type":"string","p":{"role":"style"}}],"rows":[{"c":[{"v":"Budget"},{"v":0},{"v":0},{"v":22707893.613},{"v":22707893.613},{"v":"#007fff"}]},{"c":[{"v":"Contract Labor"},{"v":22707893.613},{"v":22707893.613},{"v":22534350.429},{"v":22534350.429},{"v":"#1e8449"}]},{"c":[{"v":"Contract Non Labor"},{"v":22534350.429},{"v":22534350.429},{"v":22930956.493},{"v":22930956.493},{"v":"#922b21"}]},{"c":[{"v":"Materials and Equipment"},{"v":22930956.493},{"v":22930956.493},{"v":22800059.612},{"v":22800059.612},{"v":"#1e8449"}]},{"c":[{"v":"Other"},{"v":22800059.612},{"v":22800059.612},{"v":21993391.103},{"v":21993391.103},{"v":"#1e8449"}]},{"c":[{"v":"Labor"},{"v":21993391.103},{"v":21993391.103},{"v":21546003.177999996},{"v":21546003.177999996},{"v":"#1e8449"}]},{"c":[{"v":"Travel"},{"v":21546003.177999996},{"v":21546003.177999996},{"v":21533258.930999994},{"v":21533258.930999994},{"v":"#1e8449"}]},{"c":[{"v":"Training"},{"v":21533258.930999994},{"v":21533258.930999994},{"v":21550964.529999994},{"v":21550964.529999994},{"v":"#922b21"}]},{"c":[{"v":"Actual"},{"v":0},{"v":0},{"v":21550964.52999999},{"v":21550964.52999999},{"v":"#007fff"}]}]});
var waterFallChart = new google.visualization.ChartWrapper({
chartType: 'CandlestickChart',
containerId: 'chart_div',
dataTable: dataChart,
options: {
animation: {
duration: 1500,
easing: 'inAndOut',
startup: true
},
backgroundColor: 'transparent',
bar: {
groupWidth: '85%'
},
chartArea: {
backgroundColor: 'transparent',
height: 210,
left: 60,
top: 24,
width: '100%'
},
hAxis: {
slantedText: false,
textStyle: {
color: '#616161',
fontSize: 9
}
},
height: 272,
legend: 'none',
tooltip: {
isHtml: true,
trigger: 'both'
},
vAxis: {
format: 'short',
gridlines: {
count: -1
},
textStyle: {
color: '#616161'
},
viewWindow: {
max: 24000000,
min: 16000000
}
},
width: '100%'
}
});
google.visualization.events.addOneTimeListener(waterFallChart, 'ready', function () {
google.visualization.events.addListener(waterFallChart.getChart(), 'animationfinish', function () {
var annotation;
var chartLayout;
var container;
var numberFormatShort;
var positionY;
var positionX;
var rowBalance;
var rowBottom;
var rowFormattedValue;
var rowIndex;
var rowTop;
var rowValue;
var rowWidth;
container = document.getElementById(waterFallChart.getContainerId());
chartLayout = waterFallChart.getChart().getChartLayoutInterface();
numberFormatShort = new google.visualization.NumberFormat({
pattern: 'short'
});
rowIndex = 0;
Array.prototype.forEach.call(container.getElementsByTagName('rect'), function(rect) {
switch (rect.getAttribute('fill')) {
// use colors to identify bars
case '#922b21':
case '#1e8449':
case '#007fff':
rowWidth = parseFloat(rect.getAttribute('width'));
if (rowWidth > 2) {
rowBottom = waterFallChart.getDataTable().getValue(rowIndex, 1);
rowTop = waterFallChart.getDataTable().getValue(rowIndex, 3);
rowValue = rowTop - rowBottom;
rowBalance = Math.max(rowBottom, rowTop);
positionY = chartLayout.getYLocation(rowBalance) - 6;
positionX = parseFloat(rect.getAttribute('x'));
rowFormattedValue = numberFormatShort.formatValue(rowValue);
if (rowValue < 0) {
rowFormattedValue = rowFormattedValue.replace('-', '');
rowFormattedValue = '(' + rowFormattedValue + ')';
}
annotation = container.getElementsByTagName('svg')[0].appendChild(container.getElementsByTagName('text')[0].cloneNode(true));
$(annotation).text(rowFormattedValue);
annotation.setAttribute('x', (positionX + (rowWidth / 2)));
annotation.setAttribute('y', positionY);
annotation.setAttribute('font-weight', 'bold');
rowIndex++;
}
break;
}
});
});
});
$(window).resize(function() {
waterFallChart.draw();
});
waterFallChart.draw();
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

Adding an image on top of line annotations in Google Line chart

Here is a code for creating a line chart. I'm trying to add an image on top of the line annotation. Here a demo on jsfiddle.
Here is the code:
google.charts.load('current', {packages: ['corechart', 'line']});
google.charts.setOnLoadCallback(drawBasic);
function drawBasic() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'X');
data.addColumn({type: 'string', role: 'annotation'});
data.addColumn('number', 'Dogs');
data.addColumn('number', 'Cats');
data.addRows([
[0,null, 0, 1], [1,'', 10,3], [2,null, 23,6], [3,null, 17,7], [4,null, 18,4], [5,null, 9,7]
]);
var options = {
curveType : 'function',
hAxis: {
title: 'Time',
gridlines: {
color: 'transparent'
}
},
vAxis: {
title: 'Popularity',
gridlines: {
color: 'transparent'
}
},
annotations: {
style: 'line',
position: 'top'
}
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
I really can't figure out how to do this. Any one ever done this ?

you can add elements to the chart, once the 'ready' event fires
(or 'animationfinish' when using animation)
first, need to find the annotations, which will be <rect> elements
similar to the axis lines, they will have a 'width' of 1
but they will have a different 'fill' attribute
(keep this in mind, if more style settings are set on the annotations option)
the following working snippet finds the annotation lines and adds an image to the top
google.charts.load('current', {
callback: drawBasic,
packages: ['corechart']
});
function drawBasic() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'X');
data.addColumn({type: 'string', role: 'annotation'});
data.addColumn('number', 'Dogs');
data.addColumn('number', 'Cats');
data.addRows([
[0, null, 0, 1],
[1, '', 10, 3],
[2, null, 23, 6],
[3, null, 17, 7],
[4, null, 18, 4],
[5, null, 9, 7]
]);
var options = {
annotations: {
position: 'top',
style: 'line'
},
hAxis: {
gridlines: {
color: 'transparent'
},
title: 'Time'
},
vAxis: {
gridlines: {
color: 'transparent'
},
title: 'Popularity'
},
};
var container = document.getElementById('chart_div');
var chart = new google.visualization.LineChart(container);
google.visualization.events.addListener(chart, 'ready', function () {
Array.prototype.forEach.call(container.getElementsByTagName('rect'), function(rect) {
if ((rect.getAttribute('width') === '1') && (rect.getAttribute('fill') === '#999999')) {
var xPos = parseFloat(rect.getAttribute('x'));
var yPos = parseFloat(rect.getAttribute('y'));
var whiteHat = container.appendChild(document.createElement('img'));
whiteHat.src = 'http://findicons.com/files/icons/512/star_wars/16/clone_old.png';
whiteHat.className = 'whiteHat';
// 16x16 (image size in this example)
whiteHat.style.top = (yPos - 8) + 'px';
whiteHat.style.left = (xPos) + 'px';
}
});
});
chart.draw(data, options);
}
.whiteHat {
border: none;
position: absolute;
}
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

Add 'role': 'tooltip', 'p': {'html': true}}); in your data.addColumn and
in the options use: tooltip: { isHtml: true }.
HTML:
<div id="chart"></div>
JavaScript:
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'y');
data.addColumn('number', 'Line 1');
data.addColumn({'type': 'string', 'role': 'tooltip', 'p': {'html': true}});
data.addColumn('number', 'Line 2');
data.addRow([1, 1, '<img src="https://www.google.com/images/srpr/logo6w.png" style="width:30px;height:50px"/>', 2]);
data.addRow([2, 2,'<img src="https://www.google.com/images/srpr/logo6w.png" style="width:30px;height:50px"/>', 4]);
data.addRow([3, 3,'<img src="https://www.google.com/images/srpr/logo6w.png" style="width:30px;height:50px"/>', 6]);
data.addRow([4, 4,'<img src="https://www.google.com/images/srpr/logo6w.png" style="width:30px;height:50px"/>', 8]);
data.addRow([5, 5,'<img src="https://www.google.com/images/srpr/logo6w.png" style="width:30px;height:50px"/>', 10]);
var options = {
title: 'Graph',
hAxis: {
title: 'Time',
gridlines: {
color: 'transparent'
}
},
vAxis: {
title: 'Popularity',
gridlines: {
color: 'transparent'
}
},
annotations: {
style: 'line',
position: 'top'
},
tooltip: {isHtml: true},
};
var chart = new google.visualization.LineChart(document.getElementById('chart'));
chart.draw(data, options);
}
google.load("visualization", "1", {
packages: ["corechart"]
});
google.setOnLoadCallback(drawChart);
See in JsFiddle.

Google line chart show all custom tooltips

I have to create a line chart where a few of the points have tooltips or other balloons/captions/texboxes with information about the point. They must always be displayed, not only on mouse over. Basically a google annotation chart, but with the data on the chart.
I tried the code below, which doesn't even show the tooltip as it should. Any thoughts, or should I choose a different technology? Thanks.
google.load('visualization', '1.1', { packages: ['line'] });
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'Day');
data.addColumn('number', 'Score');
data.addColumn({type: 'string', role: 'tooltip' });
data.addRows([
[1, 37, 'This score occurred in Texas in 1959.'],
[2, 30, ''],
[3, 25, ''],
]);
var options = {
chart: {
title: 'Important Chart',
subtitle: 'in millions of dollars (USD)'
},
width: 900,
height: 500,
legend: 'none',
axes: {
x: {
0: { side: 'top' }
}
}
};
var chart = new google.charts.Line(document.getElementById('line_top_x'));
chart.draw(data, options);
}

You would want to use role:'annotation' instead of role: 'tooltip'. Annotation allows you to display the text without any user interaction. See the documentation on annotationRole for more info.
Working Code: http://jsfiddle.net/wkyg2brg/
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('number', 'Day');
data.addColumn('number', 'Score');
data.addColumn({type:'string', role:'annotation'});
data.addRows([
[1, 37, 'This score occurred in Texas in 1959.'],
[2, 30, ''],
[3, 25, ''],
]);
var options = {
chart: {
title: 'Important Chart',
subtitle: 'in millions of dollars (USD)'
},
width: 900,
height: 500,
legend: 'none',
axes: {
x: {
0: { side: 'top' }
}
}
};
var chart = new
google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data,options);
}