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FPHealthcare
22 Posts |
 Posted - 07 Nov 2007 : 22:53:03
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I try to create a bar chart using following code. But there is a line between two bars. also the xValues are not right. Something wrong?
ChartView chartVu = this;
Font theFont;
int nnumpnts = 6;
double []x1= new double[nnumpnts];
double []y1 = new double[nnumpnts];
// height width
x1[0] =1; y1[0]=6;
x1[1] =2; y1[1] = 7;
x1[2] =3; y1[2]=10;
x1[3] =3.7; y1[3] = 10;
x1[4] =4; y1[4] = 20;
x1[5] =4.3; y1[5] = 11;
theFont = new Font("Microsoft Sans Serif", 10, FontStyle.Bold);
SimpleDataset Dataset1 = new SimpleDataset("Actual Sales",x1,y1);
CartesianCoordinates pTransform1 = new CartesianCoordinates();
pTransform1.SetScaleStartY(0);
pTransform1.SetScaleStartX(0);
pTransform1.SetScaleStopX(5);
pTransform1.SetScaleStopY(15);
pTransform1.SetGraphBorderDiagonal(0.15, .15, .9, 0.75) ;
Background graphbackground = new Background( pTransform1, ChartObj.GRAPH_BACKGROUND,
Color.FromArgb(30,70,70), Color.FromArgb(90,20,155), ChartObj.Y_AXIS);
chartVu.AddChartObject(graphbackground);
Background plotbackground = new Background( pTransform1, ChartObj.PLOT_BACKGROUND,
Color.Black);
chartVu.AddChartObject(plotbackground);
LinearAxis xAxis = new LinearAxis(pTransform1, ChartObj.X_AXIS);
xAxis.SetColor(Color.White);
chartVu.AddChartObject(xAxis);
LinearAxis yAxis = new LinearAxis(pTransform1, ChartObj.Y_AXIS);
yAxis.SetColor(Color.White);
chartVu.AddChartObject(yAxis);
Grid ygrid = new Grid(xAxis, yAxis,ChartObj.Y_AXIS, ChartObj.GRID_MAJOR);
ygrid.SetColor(Color.White);
ygrid.SetLineWidth(1);
chartVu.AddChartObject(ygrid);
ChartAttribute attribApnea = new ChartAttribute(Color.Red,0,DashStyle.Solid);
SimpleBarPlot plotApnea = new SimpleBarPlot(pTransform1,Dataset1,5,0.0,attribApnea,
ChartObj.JUSTIFY_CENTER);
chartVu.AddChartObject(plotApnea);
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quinncurtis
1164 Posts |
Posted - 08 Nov 2007 : 08:08:22
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I would guess that your bargraph width value of 5.0 is ruining your graph, since your x-data values are only between 0.3 and 1.0 units apart. As a result your bars are overlapping, and extending out of the view. Use a width value of 0.2 and you will see a very different graph.
double barwidth = 0.2;
double barbase = 0.0;
SimpleBarPlot plotApnea = new SimpleBarPlot pTransform1,Dataset1,barwidth,barbase,attribApnea, ChartObj.JUSTIFY_CENTER);
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FPHealthcare
22 Posts |
Posted - 08 Nov 2007 : 14:33:55
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| Is that possible to draw a bar just like a single line? The problem is, we want to draw bars between every 0.3 in 1 x-data value.Because, the bars are very tight, they always overlapping each other, even I set the barwidth to 0.1. Thanks. |
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FPHealthcare
22 Posts |
Posted - 08 Nov 2007 : 14:43:55
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| Thanks, I solved the problem, I just set the barwidth to 0.00001. Now the chart looks fine. |
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Topic |
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How to create a bar chart
