We use a stacked bar chart from Apexcharts library with the following setting:
plotOptions: {
bar: {
columnWidth: '90%',
}
}
Expected behavior: Each stacked bar will take 90% of the available width.
In fact, the actual with of bars may vary as about 40% to 90% of the available width. Sometimes it can be different with exactly the same data.
We tried to use different values for columnWidth (both in % and px)
Related
I am pretty familiar with Google Charts but was never able to find one thing. You can change the colors of your columns or bars or pie pieces or whatever in a couple of ways but essentially it comes down to something like this:
chart.draw(data, {
width: 400,
height: 240,
title: 'Toppings I Like On My Pizza',
colors: ['#e0440e', '#e6693e', '#ec8f6e', '#f3b49f', '#f6c7b6'],
is3D: true
});
Does anyone know how I can apply a "color theme"? Meaning, make the chart all bluish, or reddish or orangish. The hard coded color values work OK if you have a fixed data set but I am working on dynamic data sets. Sometimes I will have 3 series and sometimes 15, and I would like a way to set a chart color style/theme.
Here's a google chart I've made:
I want the legend paging gone. On page 2 there are only 2 items, and obviously these 2 items could easily fit without paging.
After spending some time researching and playing around, it seems my only options are:
Make the chart area higher - It's already too big
Make the text smaller - It's already too small
Hide the legend and make my own - This is my last resort
Does anyone know how I can modify the legend height to fit the other 2 items?
Paging is gone only when legend.position is 'top' and give legend.maxLines:
legend:{ position:'top',maxLines:4}
https://developers.google.com/chart/interactive/docs/gallery/piechart?csw=1#Configuration_Options
It looks like you have extra vertical space at the bottom of the chart that you could use to expand the chartArea into:
chartArea: {
height: '85%',
top: '13%'
}
If that is not a viable solution, your only choice is to build a custom legend, as the API does not support altering the dimensions of the legend directly.
Short version - I want to modify the width/height of a google.visualization.PieChart object after construction, but I can't find any documentation pointing out how it's done.
Context - I'm building a visualization that overlays a bunch of data on a Google Map. At certain lat/long coordinates I want to render a pie chart marker detailing certain statistics that are relevant to that place.
To avoid cluttering up the screen, I want to vary the dimensions of the pie chart markers based on the current zoom level. This requires me to either re-render all markers that are currently visible or, preferably, change the width/height attributes of all markers.
I currently use the following settings to render my charts:
legend: {position: "none"},
width: 200,
height: 200,
backgroundColor: "transparent",
pieSliceText: "none",
colors: ["#C10001", "#F79647", "#92D051", "#558ED5", "#7F7F7F"],
tooltip: {textStyle: {fontSize: 14}}
Is there a way to alter the dimensions of the chart after it's created?
I do not think there's something in the API; nevertheless with a tiny bit of Javascript you should be able to modify the attribute of the SVG tag containing the chart. One possible way is to add a viewBox attribute that will scale up or down the pie chart.
The only working solution I have so far is to redraw the entire chart with changed width/height settings. This snippet uses jQuery.
for (var i = 0; i < dataPoints.length; ++i) {
var drawingOptions = $.extend({}, defaultDrawOptions);
drawingOptions.width = defaultDrawOptions.width*(currentZoom/defaultZoom);
drawingOptions.height = defaultDrawOptions.height*(currentZoom/defaultZoom);
dataPoints[i].chart.draw(dataPoints[i].dataSource, drawingOptions);
}
As you can see, this half-baked solution is rather clumsy and might needlessly deteriorate performance.
Other than using the Column chart and naming appropriately is it possible to create histograms in google chart api?
To add to mattedgod's answer,
The column chart can now be created with the bars spaced tightly together, use the option:
bar: {groupWidth:"100%"};
Google introduced a couple of days ago an histogram chart : link
Google Charts does not have a histogram chart, since it is just a visualization library you will have to modify the Column Chart to suit your needs. However, I suspect the reason you are not satisfied with column chart is because of the column spacing, which doesn't look very histogram-like. So I will answer this question first:
Can you control the spacing between columns in a Column Chart?
No, not at this time. See this quote from the Google Charts Community
There's no support in the API for controlling the spacing between bars. You might be able to hack it if you're willing to dig into the chart's SVG.
So it is do-able but will take some extra work from you. You can also play around with the chartArea configuration option which will have some influence on the column spacing.
However, the original question may have a different answer actually.
Can you create a histogram-like chart using a Column Chart?
While you cannot control the spacing between sets of columns in a Column Chart, you can get the columns pressed up almost to one another by specifying them as different columns, and then setting each column's color to the same color in the configuration options.
Here is a simple 3-column histogram:
var data = google.visualization.arrayToDataTable([
['x', '1-10', '11-20', '21-30'],
['', 3, 5, 4]
]);
// Create and draw the visualization.
new google.visualization.ColumnChart(document.getElementById('visualization')).
draw(data,
{title:"My Histogram",
width:600, height:400,
hAxis: {title: null},
colors: ['red','red','red'],
legend: {position: 'none'}
}
);
Notice you have 1 row with 3 columns that are each colored 'red'. The downside to this is that you lose out on the labels along the x-axis telling you which column represents what. Again, you will have to have some sort of logic to construct this histogram and populate the data the way you want as well.
So the long story short is Google Charts doesn't have a Histogram and while it is possible with a Column Chart, you might consider looking into a different library.
I have a chart generated from Google Charts that can be found here: Chart generate by Google Charts API. As you can see the x axis labels are being overlapped.
Anyone knows how to solve this?
See the docs under Bar Width and Spacing (chbh). There's this snippet:
a - space_between_bars and space_between_groups are given in
absolute units (or default absolute values, if not specified). Bars
will be resized so that all bars will fit in the chart.
So just add chbh=a to the options. Here's the example with this option added.