CODEWITHSUNDEEP
androidachartengine
stefan
stefan

Reputation: 13

How to combine a multiple series bar chart and a line chart

I'd like to combine a bar chart with 2 data series and a line chart in AChartEngine but I was not able to do that. In the AChartEngine demo I found only an example which combines a single series bar chart and a line Chart (Combined temperature).

What I'd like: https://i.sstatic.net/IBq9w.jpg

If I define 3 series (2 for bar chart, 1 for line chart) in a dataset for a combined XY chart like this: ChartFactory.getCombinedXYChartView(ctx, dataset, renderer, new String[] { BarChart.TYPE, BarChart.TYPE, LineChart.TYPE });

...then I get this result: https://i.sstatic.net/YVozj.jpg

If I define 3 series and 2 chart types:
ChartFactory.getCombinedXYChartView(ctx, dataset, renderer, new String[] { BarChart.TYPE, LineChart.TYPE });

...then I get an exception:
java.lang.IllegalArgumentException: Dataset, renderer and types should be not null and the datasets series count should be equal to the types length
at org.achartengine.ChartFactory.getCombinedXYChartView(ChartFactory.java:202)

Do I misunderstand something or does AChartEngine simply not support a multiple series bar chart and a line chart in combination?

Upvotes: 1

Views: 2363

Answers (2)

Dan D.
Dan D.

Reputation: 32391

Starting from the "Combined temperature" example in the AChartEngine demo, you can keep a LineChart and a BarChart the way they are and add a new BarChart. The x axis values for the two bar charts should be a little bit different such as they don't overlap. For instance, if the x values should be 1 then the first bar chart could add the value at 0.75 and the second one at 1.25. This way they will be rendered separately.

Also, set the main renderer bar spacing: renderer.setBarSpacing(1); means that the space between 2 items in the same series is equal to the width of one bar.

Upvotes: 0

Pier
Pier

Reputation: 784

See this : http://tapt007.hubpages.com/hub/Android-Combined-Charts Hope it helps you.

Upvotes: 1

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