Develop Reference

Cusomizing haxis label in google charts

I do have the following function to draw a chart, which represents some value for a given time. The horizontal axis should be the dates an not the numbers (which are important to make the trendline work). How can i achieved that?
chart_data contains of the following
[["Year","accept","error","total"],[{"v":0,"f":"20.09.2018"},1,3,4],
[{"v":1,"f":"21.09.2018"},4,5,9],[{"v":2,"f":"22.09.2018"},0,7,7],
[{"v":3,"f":"24.09.2018"},14,14,28],[{"v":4,"f":"25.09.2018"},2,2,4],
[{"v":5,"f":"26.09.2018"},6,16,22]]
The js function looks like this:
function drawChart(chart_id, chart_title, chart_data) {
var data = google.visualization.arrayToDataTable(
chart_data
);
var options = {
title: chart_title,
hAxis: {
title: 'Datum',
titleTextStyle: {color: '#333'}},
vAxis: {minValue: 0},
trendlines: {
0: {
type: 'polynomial',
degree: 3,
},
1:{
type: 'polynomial',
degree: 3,
},
2:{
type: 'polynomial',
degree: 3,
} } // Draw a trendline for data series 0.
};
var chart = new google.visualization.AreaChart(document.getElementById(chart_id));
chart.draw(data, options);
}

to customize the haxis labels, use option hAxis.ticks
in this case, we can pull the first value from each row to use for our ticks
var chart_data = [
["Year","accept","error","total"],
[{"v":0,"f":"20.09.2018"},1,3,4],
[{"v":1,"f":"21.09.2018"},4,5,9],
[{"v":2,"f":"22.09.2018"},0,7,7],
[{"v":3,"f":"24.09.2018"},14,14,28],
[{"v":4,"f":"25.09.2018"},2,2,4],
[{"v":5,"f":"26.09.2018"},6,16,22]
];
// extract first value from each row
var ticks = chart_data.map(function (row) {
return row[0];
});
ticks.splice(0, 1); // remove column label
see following working snippet...
google.charts.load('current', {
packages: ['corechart']
}).then(function () {
var chart_data = [
["Year","accept","error","total"],
[{"v":0,"f":"20.09.2018"},1,3,4],
[{"v":1,"f":"21.09.2018"},4,5,9],
[{"v":2,"f":"22.09.2018"},0,7,7],
[{"v":3,"f":"24.09.2018"},14,14,28],
[{"v":4,"f":"25.09.2018"},2,2,4],
[{"v":5,"f":"26.09.2018"},6,16,22]
];
// extract first value from each row
var ticks = chart_data.map(function (row) {
return row[0];
});
ticks.splice(0, 1); // remove column label
var data = google.visualization.arrayToDataTable(chart_data);
var options = {
title: 'chart_title',
hAxis: {
ticks: ticks, // custom labels
title: 'Datum',
titleTextStyle: {color: '#333'}
},
vAxis: {minValue: 0},
trendlines: {
0: {
type: 'polynomial',
degree: 3,
},
1:{
type: 'polynomial',
degree: 3,
},
2:{
type: 'polynomial',
degree: 3,
}
}
};
var chart = new google.visualization.AreaChart(document.getElementById('chart_div'));
chart.draw(data, options);
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="chart_div"></div>

Moving annotations on Bar Chart with Negative Values Google Chart

I am using google charts within an MVC project.
I am looking to implement a bar chart that has negative values.
I would like the annotations on the negative portion of the chart to be on the same side as the end of the bar (just like the positive, see image below, green box is where I would like annotations to be).
I cant seem to find any documentation on how this can be achieved.
Is it possible to move the annotation to the other side?

there are no standard config options that will move the annotations
but you can move them manually
however, the chart will actually move them back whenever activity occurs,
such as on bar hover
have to use a MutationObserver, or something, to keep them there
use chart methods --> getChartLayoutInterface().getXLocation(value)
to find the location
also, need to adjust the axis window to leave room for the labels
see following working snippet...
google.charts.load('current', {
callback: function () {
var data = new google.visualization.DataTable({
cols: [
{label: 'x', type: 'string'},
{label: 'y0', type: 'number'},
],
rows: [
{c:[{v: 'Omega'}, {v: -0.95}]},
{c:[{v: 'Large'}, {v: -0.92}]},
{c:[{v: 'Medium'}, {v: 2.76}]},
{c:[{v: 'Tiny'}, {v: 2.03}]}
]
});
var options = {
annotations: {
alwaysOutside: true,
stem: {
color: 'transparent'
},
textStyle: {
color: '#000000'
}
},
hAxis: {
// leave room for annotation
viewWindow: {
min: data.getColumnRange(1).min - 1
}
},
legend: {
position: 'none'
}
};
var view = new google.visualization.DataView(data);
view.setColumns([0, 1, {
calc: 'stringify',
sourceColumn: 1,
type: 'string',
role: 'annotation'
}]);
var container = document.getElementById('chart');
var chart = new google.visualization.BarChart(container);
// move annotations
var observer = new MutationObserver(function () {
$.each($('text[text-anchor="start"]'), function (index, label) {
var labelValue = parseFloat($(label).text());
// only negative -- and -- not on tooltip
if ((labelValue < 0) && ($(label).attr('font-weight') !== 'bold')) {
var bounds = label.getBBox();
var chartLayout = chart.getChartLayoutInterface();
$(label).attr('x', chartLayout.getXLocation(labelValue) - bounds.width - 8);
}
});
});
observer.observe(container, {
childList: true,
subtree: true
});
chart.draw(view, options);
},
packages: ['corechart']
});
<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>

How to set different trigger attribute for multiple tooltip in the same Combochart

I have done a small graph with Google charts combochart combining
a stacked bar chart with a line chart.
The tooltips appear on all stacks and points of the line chart triggered by
mouse actions: 'focus' (mouse on the target), 'selection' (on click) and 'both' both click and focus.
I wanted to have all tooltips from line chart appeared after a click, trigger: set to 'selection' and all tooltips from stacked bar chart after a focus on the zone, trigger: set to 'focus'. Is this possible with Google Charts to set different tooltip behaviour in the same chart? How do I develop this?
Play my example here:
https://jsfiddle.net/machesne/xf1kccdq/
google.charts.load('current', {packages: ['corechart', 'bar']});
google.charts.setOnLoadCallback(drawStacked);
function drawStacked() {
var tooltipdata = [["Apples detail: ","Tomatoes detail: ", "Oranges detail : ", "Strawberries detail : "],["Apples detail: ","Tomatoes detail: ", "Oranges detail : ", "Strawberries detail : "],["Apples detail: ","Tomatoes detail: ", "Oranges detail : ", "Strawberries detail : "]]
var valuedata = [[50, 10, 15, 15, 90, 90],[50, 12, 15, 15, 92, 92],[60, 10, 15, 15, 100, 100]];
var data = google.visualization.arrayToDataTable([
['Date', 'Apples', { role: 'tooltip' }, 'Tomatoes', { role: 'tooltip' }, 'Orange', { role: 'tooltip' }, 'Strawberries', { role: 'tooltip' }, { role: 'annotation' }, 'Sum' , { role: 'tooltip' }],
['', valuedata[0][0], tooltipdata[0][0], valuedata[0][1], tooltipdata[0][1], valuedata[0][2], tooltipdata[0][2], valuedata[0][3], tooltipdata[0][3], valuedata[0][4],valuedata[0][5], tooltipdata[0][4]],
['', valuedata[1][0], tooltipdata[1][0], valuedata[1][1], tooltipdata[1][1], valuedata[1][2], tooltipdata[1][2], valuedata[1][3], tooltipdata[1][3], valuedata[1][4],valuedata[1][5], tooltipdata[1][4]],
['', valuedata[2][0], tooltipdata[2][0], valuedata[2][1], tooltipdata[2][1], valuedata[2][2], tooltipdata[2][2], valuedata[2][3], tooltipdata[2][3], valuedata[2][4],valuedata[2][5], tooltipdata[2][4]], ]);
var options = {
width: 1200,
height: 1000,
legend: { position: 'bottom', maxLines: 2 },
seriesType: 'bars',
bar: { groupWidth: '90%' },
isStacked: true,
tooltip: { isHtml: true, trigger: 'both' }, // CSS styling affects only HTML tooltips.
series: {4: {type: 'line', pointSize: 15 } }
};
var chart = new google.visualization.ComboChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
Thanks a lot for your answers!

How to make bars of different color in google charts?

I have the following code which generates a column chart.
<script type="text/javascript">
//google.charts.load('current', {packages: ['corechart', 'bar']});
google.setOnLoadCallback(drawBar);
function drawBar() {
var data = google.visualization.arrayToDataTable([
['Number of Visits', 'Average Check Size',{ role: 'style' }],
['8+', 26.22, '#083874'],
['4-7', 30.34,'#94CAFC'],
['2-3', 24.09,'#EBBA25'],
['1', 27.95,'#F59E47']
]);
var formatter = new google.visualization.NumberFormat({
fractionDigits: 1,
prefix: '$'
});
formatter.format(data, 1);
var view = new google.visualization.DataView(data);
view.setColumns([0, 1,
{ calc: "stringify",
sourceColumn: 1,
type: "string",
role: "annotation" }]);
var options = {
//chartArea: {width: '50%'},
hAxis: {
title: 'Average Check Size',
titleTextStyle: {italic: false},
minValue: 0,gridlines: { color: 'transparent'}
},
vAxis: {
minValue: 0,
title: 'Number of Visits',
titleTextStyle: {italic: false},
gridlines: { color: 'transparent'}},
//colors: ['red','green','blue','yellow'],
legend: {position: 'none'},
};
var chart = new google.visualization.ColumnChart(document.getElementById('chart_bar'));
chart.draw(view, options);
}
The output is a column chart with annotations on each of the bars. I want to have a similar kind of output but all four bars must have different colors. How do I do that? Please suggest

You can use the style role. There are examples on google charts page. And here is a jsfiddle.
var data = google.visualization.arrayToDataTable([
['Element', 'Density', { role: 'style' }],
['Copper', 8.94, '#b87333'], // RGB value
['Silver', 10.49, 'silver'], // English color name
['Gold', 19.30, 'gold'],
['Platinum', 21.45, 'color: #e5e4e2' ], // CSS-style declaration
]);

Customizing Google Charts to display text/number in charts

I am using Google API for generating graphs.
My current Output is :
I want to display text/number in the bar as like below.. I could not find /missing the options to do it. Please let me know... Please do not say it not possible as it is 3rd party API. Its possible as they have done it for other Bar Charts... Link Here
Here is my code.
//Bar Chart
var data_bar = google.visualization.arrayToDataTable([
['Unit Tested','Passed', 'Failed', 'NA' ],
['BTEQ', 100, 20, 3, ]
]);
var options_bar = {
width: 400,
height: 75,
legend: { position: 'top', maxLines: 3 },
bar: { groupWidth: '75%' },
isStacked: true,
series: [{color: '#32B232',visibleInLegend: false}, {color: 'red',visibleInLegend: false}, {color: '#FFD732',visibleInLegend: false}]
};
var chart_bar = new google.visualization.BarChart(document.getElementById('chart_div'));
chart_bar.draw(data_bar, options_bar);
//end of bar chart..

You've actually mentioned the link to the solution yourself:
https://developers.google.com/chart/interactive/docs/gallery/barchart#Labels
Basically you need to add the following code similar to the DataView() mentioned in the link above, but now for every column of the data.
var view = new google.visualization.DataView(data_bar);
view.setColumns([0, 1,
{ calc: "stringify",
sourceColumn: 1,
type: "string",
role: "annotation" },
2,
{ calc: "stringify",
sourceColumn: 2,
type: "string",
role: "annotation" },
3,
{ calc: "stringify",
sourceColumn: 3,
type: "string",
role: "annotation" }
]);
Edit: to answer your question: the 0,1,2,3 refer to the columns of the data. In order for the annotation to appear the data from the columns (sourceColumn: 1), is transformed to a string with JSON function stringify() (calc: "stringify"). Note that with setColumns() you can use the data multiple times. [0,1,1,1,2,3] would mean that 100 is used three times in the DataView(). Here every column is used once to see the bar and the second time it is transformed to a string and used as annotation.
Your own solutions, although shorter code is more of a hack. Since you enter the data twice. This becomes a problem when you import the data from an external source.

Here is my working answer...
var data_bar = google.visualization.arrayToDataTable([
['Unit Tested','Passed',{ role: 'annotation' }, 'Failed',{ role: 'annotation' }, 'NA',{ role: 'annotation' } ],
['BTEQ', 100,'100', 20,'20', 3,'3' ]