Is it possible to display a png-icon, off lets say 16x16 pixels, as a label instead of the standard text?
I want to make an bar chart with on the base of the bars, a little icon which symbols the label.
This is the data of the table:
var data = google.visualization.arrayToDataTable([
['Type', 'Amount'],
['ecological', 4],
['social', 3],
['natural', 660]
]);
The type-label I want to represent by an icon.
If it's not possible with an bar chart, is it then possible with a Pie chart?
Related
I have a horizontal bar chart that is too tall for the page (i.e. the user has to scroll down to see the full chart) and there is only 4 bars on the chart.
I can reduce the widths of the bars successfully, by using either barThickness or category and bar percentage. The problem is this does not reduce the overall height of the chart, as it just creates more space between each bar.
How do I reduce the width of the bar AND the overall chart, so the user does not have to scroll?
Thanks
Set the height of the chart canvas element, either by specifying it directly in the canvas tag or by specifying max-height in CSS.
Relevant links:
https://www.chartjs.org/docs/latest/#creating-a-chart
Setting width and height
I managed to fix it, using a suggestion from another post. In the following code snippet, I added the line that set the canvas height:-
$("#dvChart5").html("");
var canvas = document.createElement('canvas');
canvas.height = 100;
$("#dvChart5")[0].appendChild(canvas);
Is it possible to make a bar chart a double y-axis?
I have a bar chart with 4 bars, generated by the query, returning 4 rows.
Is there a way for me to make each bar a different color and on the right-hand side, instead of series name, specify colors along with labels for each bar?
Click on one of the chart series and look for the 'Assign to Y-Axis' attribute
Not how this is next to a 'Color' attribute. You can source this colour from your SQL, substituting your value using the using &COLUMN_ALIAS. syntax.
An example from the sample charts application in the linked form post shows how colour can be row based (with column alias adjusted to match my screenshot)
select a.product_name,
b.quantity,
b.customer,
-- This is the column you're looking for
case when b.quantity > 50 then 'gold'
when b.quantity <= 30 then 'red'
when b.quantity > 30 then 'green'
else 'blue'
end as colour
from eba_demo_chart_products a, eba_demo_chart_orders b
where a.product_id = b.product_id
and customer = 'Store A'
I would like to customize my column chart API as below
1) When I click on the legend the data set associated with it should return null and show the legend in a disabled color. My code is below.
function drawVisualization() {
// Create and populate the data table.
var chart_div = document.getElementById('visualization2');
var data2 = google.visualization.arrayToDataTable([["Sections","Client Scored",{ role: "style" },"Client Confidence",{ role: "style" },"Average Mark",{ role: "style" },"Average Confidence",{ role: "style" }],["Set 1",90,"opacity: 1",95,"opacity: 0.5",78,"opacity: 1",69,"opacity: 0.5"],["Set 2",65,"opacity: 1",73,"opacity: 0.5",99,"opacity: 1",99,"opacity: 0.5"]]);
var options = {
title:"Understanding",
width:'100%', height:600,seriesType: "bars"
,series:{1: {type: "line",pointSize: 10,lineWidth :0},3: {type: "line",pointSize: 10,lineWidth :0}}
,colors: ['#fafe14','#fafe14','#05afed','#05afed']
,vAxis: {title: "%Score",format: '##', minValue: '1', maxValue: '8'},
hAxis: {title: "",slantedText: true,slantedTextAngle:60, maxTextLines: 5, maxAlternation: 10 },
chartArea: {height: '60%',top:10}
};
var chart = new google.visualization.ColumnChart(chart_div);
chart.draw(data2, options);
}
for this, I tried the hideColumns feature and it worked but the problem is that legend also fades out with the dataset and if I remove second column third column will become second and 4 will become 3 and 5 will become 4.
2) My second question is column 1 and column 3 are lines with line width zero as shown below.
Is there any way to move this to the exact middle of the first bar as shown below
If I'm understanding the first part of your question correctly you're trying to hide a column without removing it from your DataTable.
To have a column in a DataTable not display in a chart drawn from it you can change the column's role to something that doesn't display on the chart.
For example, the annotationText role for a column applies to the annotation column that comes before it, but if there isn't an annotation column before it then the annotationText column will simply be ignored.
So if you want to hide column 2, the following code snippet would do so:
data_table.setColumnProperty(2,'role','annotationText');
And if you want to show the column again you would just change the role back to data
data_table.setColumnProperty(2,'role','data');
I am trying to create a dashboard that will be displayed on a webpage. I understand how this works for controls with pie/column/bar charts, but I cannot figure out how to do this for a bubble chart.
I can create a bubble chart by itself, I just cannot add the controls so that my users can manipulate the data. Is this possible for Bubble charts? If so, how?
Here is the jsfiddle with a category filter control:
http://jsfiddle.net/vYMyz/9/
In the ChartWrapper object, the 'ChartType' should be 'BubbleChart':
var myChart = new google.visualization.ChartWrapper({
chartType: 'BubbleChart',
containerId: ...
I am looking to create a Google charts API dashboard with filtering but I would like to chart the data based on grouped data. For example, I can create a datatable such as this:
salesman cust_age cust_sex quantity
Joe 21 Male 3
Joe 30 Female 10
Suzie 40 Female 2
Dave 15 Female 5
Dave 30 Male 10
I can appropriately create a dashboard that creates two controls (for cust_age and cust_sex) and any number of output graphs and tables all pulling from an external data source - this is pretty stock stuff, see http://code.google.com/apis/chart/interactive/docs/gallery/controls.html
The problem that I am having is how to show all charts by grouped values. Using a pie chart as an example, without any filters there are 5 slices of the pie (Joe, Joe, Suzie, Dave, Dave) - I would like to see only three (Joe, Suzie Dave). Of course, when a control is applied everything should update.
In other words, the filters should act on the original datatable, but the charts should be based on a grouped datatable.
I would guess that we could use the grouping function:
http://code.google.com/apis/ajax/playground/?type=visualization#group
however I cannot seem to bind the filters to the larger datatable, update the grouped table, and then draw the charts based on the grouped table.
Any thoughts?
I found a workaround, you should use the chartWrapper without the dashboard, so you can pass a dataTable as parameter:
var $pieChart = new google.visualization.ChartWrapper({
'chartType': 'PieChart',
'containerId': 'pie_chart',
'options': {
'width': 300,
'height': 300,
},
//group the data for the pie chart
'dataTable' : google.visualization.data.group($dataTable, [0],
[{'column': 3, 'aggregation': google.visualization.data.sum, 'type': 'number'}])
});
$pieChart.draw();
$tableWrapper = new google.visualization.ChartWrapper({
'chartType': 'Table',
'containerId': 'table_data'
});
var $genderPicker = new google.visualization.ControlWrapper({
'controlType': 'CategoryFilter',
'containerId': 'gender_filter',
'options': {
'filterColumnIndex': '2',
'useFormattedValue' : true,
'ui': {
'allowTyping': false,
'allowMultiple': false,
'labelStacking': 'vertical'
}
}
});
new google.visualization.Dashboard(document.getElementById('table_dashboard')).
bind([$genderPicker], [ $tableWrapper]).
draw($dataTable);
Then, you should add a callback to your controls so whenever the control changes the charts outside of the dashboard will be updated, like a manual binding, let's assume that the control for cust_sex is $genderPicker and the ChartWrapper table object is $tableWrapper:
google.visualization.events.addListener($genderPicker, 'statechange',
function(event) {
// group the data of the filtered table and set the result in the pie chart.
$pieChart.setDataTable( google.visualization.data.group(
// get the filtered results
$tableWrapper.getDataTable(),
[0],
[{'column': 3, 'aggregation': google.visualization.data.sum, 'type': 'number'}]
));
// redraw the pie chart to reflect changes
$pieChart.draw();
});
The result: whenever you chose male, female or both the pie chart will reflect the filtered results grouped by name. Hope it helps someone and sorry for my broken english.
another way to do it, is to use the 'ready' event of the dashboard object, then create a chart or table in there based on a grouping done to the main table of the dashboard.
eg:
//create datatable, filter elements and chart elements for the the dashboard then:
dash=new google.visualization.Dashboard(document.getElementById(elId));
google.visualization.events.addListener(dash, 'ready', function() {
//redraw the barchart with grouped data
//console.log("redraw grouped");
var dt=mainTable.getDataTable();
var grouped_dt = google.visualization.data.group(
dt, [0],
[{'column': 7, 'aggregation': google.visualization.data.sum, 'type': 'number'}]);
var mainChart = new google.visualization.ChartWrapper({
'chartType': 'ColumnChart',
'containerId': 'barChart',
'options': {
'height':500,
'chartArea':{'left':200}
},
//view columns from the grouped datatable
'view': {'columns': [0, 1]},
'dataTable':grouped_dt
});
mainChart2.draw();
});
dash.bind(
[lots,of,filter,elements],
[lots,of,chart,elements]
);
dash.draw(data)
After a long R&D, I found the solution fot this problem. For the fix, I used two event listeners in which one is ready event and other is statechange event as,
google.visualization.events.addListener(subdivPicker, 'ready',
function(event) {
// group the data of the filtered table and set the result in the pie chart.
columnChart1.setDataTable( google.visualization.data.group(
// get the filtered results
table.getDataTable(),
[0],
[{'column': 2, 'aggregation': google.visualization.data.sum, 'type': 'number'}]
));
// redraw the pie chart to reflect changes
columnChart1.draw();
});
google.visualization.events.addListener(subdivPicker, 'statechange',
function(event) {
// group the data of the filtered table and set the result in the pie chart.
columnChart1.setDataTable( google.visualization.data.group(
// get the filtered results
table.getDataTable(),
[0],
[{'column': 2, 'aggregation': google.visualization.data.sum, 'type': 'number'}]
));
// redraw the pie chart to reflect changes
columnChart1.draw();
});
Find my initial (problematic) sample here and fixed (solved) sample here
Read this thread: How to not display the data table (read at least the first two posts - the rest are really only important if you are dealing with large data sets).
Basically, you have to use an intermediary chart (tables are a good choice, because they are relatively fast to write and render, with a lower memory footprint than most charts) that is completely hidden from the users. You bind the category picker to this chart in the dashboard. Then you set up an event handler for the picker's "statechange" event that takes the data, groups it into a new DataTable, and draws the PieChart based on the grouped data.