Androidplot - X-Axis labels disabled

I am creating a histogram but ran into an issue where the labels on the x axis are disabled on the tablet. Attached correct layout on phone and wrong layout on tablet.

Does anyone know why this problem occurs on a tablet and how to fix it?

Phone layout

https://drive.google.com/file/d/0B4CxFPSlLEYpdGZCMm8xdGZHTlk/edit?usp=sharing

Tablet layout

https://drive.google.com/file/d/0B4CxFPSlLEYpakx1WFo3cGhNSTg/edit?usp=sharing

This is my code for creating a bar chart.

Layout file

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fillViewport="true"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context="com.usage.bigpondpro.MainActivity$PlaceholderFragment"
        android:id="@+id/svDailyContainter" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <com.androidplot.xy.XYPlot
                android:id="@+id/dailyXYPlot"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                androidPlot.title="Sample Bar Graph"
                androidPlot.titleWidget.labelPaint.textSize="@dimen/title_font_size"
                androidPlot.graphWidget.marginTop="20dp"
                androidPlot.graphWidget.marginLeft="10dp"
                androidPlot.graphWidget.marginBottom="20dp"
                androidPlot.graphWidget.marginRight="10dp"
                androidPlot.rangeLabelWidget.labelPaint.textSize="@dimen/range_label_font_size"
              androidPlot.domainLabelWidget.labelPaint.textSize="@dimen/range_label_font_size"  
                />     

        </LinearLayout>
    </ScrollView>

      

        
        
        
      

    

activity

    private void CreateGraph()
    {
        // initialize our XYPlot reference:
        XYPlot plot = (XYPlot)this.findViewById(R.id.dailyXYPlot);

        // Create

 a couple arrays of y-values to plot:
        Number[] series1Numbers = GenerateGraphValues();

        // Turn the above arrays into XYSeries':
        XYSeries series1 = new SimpleXYSeries(
        Arrays.asList(series1Numbers),          // SimpleXYSeries takes a List so turn our array into a List
         SimpleXYSeries.ArrayFormat.Y_VALS_ONLY, // Y_VALS_ONLY means use the element index as the x value
                "Series1");                             // Set the display title of the series

        BarFormatter series1Format = new BarFormatter(Color.rgb(51, 181, 229), Color.TRANSPARENT);

        PointLabelFormatter  plf = new PointLabelFormatter();
        plf.getTextPaint().setTextSize(18);
        plf.getTextPaint().setColor(Color.BLACK);
        series1Format.setPointLabelFormatter(plf);


        series1Format.setPointLabeler(new PointLabeler() {
            DecimalFormat df = new DecimalFormat("##0.00");

            public String getLabel(XYSeries series, int index) {

                //need to check for null
                if(series.getY(index) == null) return "";

                return df.format(series.getY(index));
            }
        });



        // add a new series' to the xyplot:
        plot.addSeries(series1, series1Format);


        //Y axis config
        plot.setRangeLabel("Values"); //label
        plot.setRangeBoundaries(0, 110, BoundaryMode.FIXED); //scale
        plot.setRangeStep(XYStepMode.SUBDIVIDE, 5); //steps
        plot.getGraphWidget().getRangeLabelPaint().setTextSize(26); //font size

        DecimalFormat nf = new DecimalFormat("#0");
        plot.setRangeValueFormat(nf);

        //X Axs config
        plot.setDomainLabel("Indexes");
        plot.setDomainStep(XYStepMode.SUBDIVIDE, 25);
       // plot.getGraphWidget().setDomainValueFormat(new GraphXLabelFormat());
        plot.getGraphWidget().getDomainLabelPaint().setTextSize(18);
        plot.getGraphWidget().setDomainLabelVerticalOffset(5);

        //other config
        plot.getLegendWidget().setVisible(false); //hide legend
        plot.getGraphWidget().getDomainGridLinePaint().setColor(Color.TRANSPARENT); //hide grid lines
        plot.getGraphWidget().getRangeGridLinePaint().setColor(Color.TRANSPARENT); //hide grid lines
        plot.getGraphWidget().setGridPaddingLeft(40); //give some padding
        plot.getGraphWidget().setGridPaddingRight(40); //give some padding
        plot.getGraphWidget().getGridBackgroundPaint().setColor(Color.WHITE); //background color
        plot.getTitleWidget().setPaddingTop(10); //give some padding

        //set bar width
        BarRenderer<?> renderer = (BarRenderer<?>) plot.getRenderer(BarRenderer.class);
        renderer.setBarWidth(25);

        //change x lable orientation
        plot.getGraphWidget().setDomainLabelOrientation(-90);

        //set graph height and width

        /** 
         For some reason when the device is in landscape mode the entire graph canvas is blank.
         Through trial and error if in landscape mode and the screen width is multiplied by 0.96 the graph and all it data appear again.....why???
         **/
        DisplayMetrics displaymetrics = new DisplayMetrics();
        ((WindowManager) this.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getMetrics(displaymetrics);

        int Width = (int) (displaymetrics.widthPixels * 0.96);

        //default to portrait
        LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, 750);
        //need to check the orienation
        if(IsLandscapeOrientation())
        {
            lp = new LayoutParams(Width, 560);
        }

        plot.setLayoutParams(lp);

    }

    private Number[] GenerateGraphValues()
    {
        int min = 30;
        int max = 100;
        int PlotPoints = 25;
        Number[] series1Numbers = new Number[PlotPoints];


        for(int x = 0; x < PlotPoints; x++){

            Random r = new Random();
            int randomNumber = r.nextInt(max - min + 1) + min;
            series1Numbers[x] = randomNumber;

        }

        return series1Numbers;  

    }

    private boolean IsLandscapeOrientation()
    {
        Display display = ((WindowManager) this.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
        int rotation = display.getRotation();

        boolean IsLandscape;


        switch (rotation) {
        case Surface.ROTATION_0:
        case Surface.ROTATION_180:
            IsLandscape = false;
         break;

        case Surface.ROTATION_90:
        case Surface.ROTATION_270:  
            IsLandscape = true;
         break;

        default:
            IsLandscape = true;
         break;
        }

        return IsLandscape;
    }