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Classcastexception achartengine


Classcastexception achartengine

By : mohamad izwan md dau
Date : November 24 2020, 05:47 AM
fixed the issue. Will look into that further I just had the similar problem, the solution is as @developeralways said, use XYSeriesRenderer instead of SimpleSeriesRenderer, although there is no compile error when I use SimpleSeriesRenderer and it works before (achartengine 1.0.0), after I updated to version 1.2.0, it doesn't work anymore.
code :


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Android: I am using AChartEngine library for graphs, but not able to integrate achartengine's graph view with android xm

Android: I am using AChartEngine library for graphs, but not able to integrate achartengine's graph view with android xm


By : OBS
Date : March 29 2020, 07:55 AM
seems to work fine This is a FAQ for AChartEngine. The AChartEngine demo application is available for download here: AChartEngine demo
In the demo source code you can see an example on how to embed a chart into an existing view.
code :
<LinearLayout
    android:id="@+id/chart"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="horizontal" />
private GraphicalView mChartView;
protected void onResume() {
  super.onResume();
  if (mChartView == null) {
    LinearLayout layout = (LinearLayout) findViewById(R.id.chart);
    mChartView = ChartFactory.getLineChartView(this, mDataset,
mRenderer);
    layout.addView(mChartView, new LayoutParams
(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    ...
  } else {
    mChartView.repaint();
  }
}
if (mChartView != null) {
  mChartView.repaint();
}
How to use achartEngine?

How to use achartEngine?


By : user3368428
Date : March 29 2020, 07:55 AM
hope this fix your issue In the ChartFactory class there are several methods that you can use like this:
code :
    GraphicalView gView=ChartFactory.getDoughnutChartView(context,data,renderer);
    setContentView(gView);
Could not find class 'org.achartengine.model.CategorySeries', referenced from method com.example.qaod.AChartEngine.<i

Could not find class 'org.achartengine.model.CategorySeries', referenced from method com.example.qaod.AChartEngine.<i


By : user2104726
Date : March 29 2020, 07:55 AM
this one helps.
Project -> Build Path -> Configure Build path -> Libraries Tab -> Add External Jar File. Like this in Eclipse
ClassCastException:java.lang.Exception: java.lang.ClassCastException in mapred

ClassCastException:java.lang.Exception: java.lang.ClassCastException in mapred


By : Lennox Gay
Date : March 29 2020, 07:55 AM
around this issue I guess that this line job.setInputFormatClass(KeyValueTextInputFormat.class); tells your program to treat your input as key value pairs of Text. Therefore, when you require your input value to be a LongWritable you get this Exception.
A quick fix would be to read your input as Text and then, if you want to use a LongWritable, parse it using:
code :
public static class KVMapper 
    extends Mapper<Text, Text, Text, LongWritable>{
    private final static LongWritable val = new LongWritable();
    public void map(Text key, Text value, Context context) {
      val.set(Long.parseLong(value.toString()));
      context.write(key,val);
    }
}
Bar graph using AchartEngine

Bar graph using AchartEngine


By : Enrico Ronconi
Date : March 29 2020, 07:55 AM
I hope this helps you . I have created bar graph using aChartEngine library. Can anyone help me how to increase the width of the bars and position the bars at the centre of X-axis? , If you want to set width of the bars--
try this...
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