How to draw the area chart in core plot?

How to draw the area chart in core plot?

Could any body tell me how to draw the area chart filled with different
colors in core plot? I don't wanna fill colors along with the x or y
coordinates? i just wanna fill colors according to the points given in the
array? plz guys i need your help. i just struck here for 3-4 days? my code
is here.
CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)self.graph.defaultPlotSpace;
plotSpace.yRange = [CPTPlotRange
plotRangeWithLocation:CPTDecimalFromInt(0) length:CPTDecimalFromInt(
200)];
plotSpace.xRange = [CPTPlotRange
plotRangeWithLocation:CPTDecimalFromInt(0) length:CPTDecimalFromInt(7)];
plotSpace.allowsUserInteraction=YES;
plotSpace.globalXRange = [CPTPlotRange
plotRangeWithLocation:CPTDecimalFromInt(0) length:CPTDecimalFromInt([dates
count]+3)];
plotSpace.delegate = self;
plotSpace.yRange = [CPTPlotRange
plotRangeWithLocation:CPTDecimalFromInt(0)
length:CPTDecimalFromInt(200)];
plotSpace.xRange = [CPTPlotRange
plotRangeWithLocation:CPTDecimalFromInt(-1)length:CPTDecimalFromInt(7)];
CPTXYAxisSet *axisSet = (CPTXYAxisSet *)self.graph.axisSet;
NSSet *majorTickLocations = [NSSet setWithObjects:
[NSDecimalNumber numberWithUnsignedInteger:1],
[NSDecimalNumber numberWithUnsignedInteger:2],
[NSDecimalNumber numberWithUnsignedInteger:3],
[NSDecimalNumber numberWithUnsignedInteger:4],
[NSDecimalNumber numberWithUnsignedInteger:5],
[NSDecimalNumber numberWithUnsignedInteger:6],
[NSDecimalNumber numberWithUnsignedInteger:7],
nil];
CPTXYAxis *x = axisSet.xAxis;
x.orthogonalCoordinateDecimal = CPTDecimalFromInt(-1);
x.majorIntervalLength =
CPTDecimalFromInt(1);//majorIntervalLength defines the number of units
between "big" ticks on the axis. In this case it's set to show one every
10 units.
x.minorTicksPerInterval = 0;
x.labelingPolicy = CPTAxisLabelingPolicyNone;
x.axisConstraints = [CPTConstraints
constraintWithLowerOffset:01.0];
x.majorTickLocations = majorTickLocations;
axisSet.xAxis.labelRotation = M_PI/4;
axisSet.xAxis.labelingPolicy = CPTAxisLabelingPolicyNone;
int labelLocations = 1;
NSMutableArray *customXLabels = [NSMutableArray array];
for (NSString *day in dates)
{
CPTAxisLabel *newLabel = [[CPTAxisLabel alloc] initWithText:day
textStyle:x.labelTextStyle];
newLabel.tickLocation = [[NSNumber numberWithInt:labelLocations]
decimalValue];
newLabel.offset =x.labelOffset;// + x.majorTickLength;
newLabel.rotation = M_PI / 4;
[customXLabels addObject:newLabel];
labelLocations++;
[newLabel release];
}
x.title = @"Data For X-Axis";
x.titleTextStyle = textStyle;
if ([[UIDevice currentDevice] userInterfaceIdiom] ==
UIUserInterfaceIdiomPhone)
{
x.titleOffset = 35.0f;
}
else
x.titleOffset = 100.0f;
x.axisLabels = [NSSet setWithArray:customXLabels];
x.axisLineStyle=lineStyle;
x.majorTickLineStyle=lineStyle;
x.minorTickLineStyle=lineStyle;
x.labelTextStyle = textStyle;
CPTXYAxis *y = axisSet.yAxis;
y.title = @"Data For Y-Axis";
y.titleTextStyle = textStyle;
y.titleOffset = 20.0f;
y.axisLineStyle = lineStyle;
y.majorTickLineStyle = lineStyle;
y.minorTickLineStyle = lineStyle;
y.labelTextStyle = textStyle;
y.labelOffset = 1.0f;
y.majorIntervalLength = CPTDecimalFromFloat(10.0f);
y.minorTicksPerInterval = 1;
y.minorTickLength = 2.0f;
y.majorTickLength = 5.0f;
CPTMutableLineStyle *majorGridLineStyle = [CPTMutableLineStyle
lineStyle];
majorGridLineStyle.lineWidth = 1.5f;
majorGridLineStyle.lineColor = [CPTColor lightGrayColor]; //[[CPTColor
lightGrayColor] colorWithAlphaComponent:0.6f];
y.majorGridLineStyle = majorGridLineStyle;
x.orthogonalCoordinateDecimal = CPTDecimalFromString(@"0");
CPTScatterPlot *plot = [[[CPTScatterPlot alloc] init] autorelease];
CPTColor *aaplColor = [CPTColor greenColor];
plot.dataSource = self;
plot.identifier = @"SYS";
plot.dataLineStyle = lineStyle;
plot.plotSymbol = plotSymbol;
[self.graph addPlot:plot toPlotSpace:plotSpace];
CPTScatterPlot *googPlot = [[CPTScatterPlot alloc] init];
googPlot.dataSource = self;
googPlot.identifier = @"DIA";
CPTColor *googColor = [CPTColor redColor];
[self.graph addPlot:googPlot toPlotSpace:plotSpace];
CPTMutableLineStyle *aaplLineStyle = [plot.dataLineStyle mutableCopy];
aaplLineStyle.lineWidth = 1.5;
aaplLineStyle.lineColor = aaplColor;
plot.dataLineStyle = aaplLineStyle;
CPTMutableLineStyle *aaplSymbolLineStyle = [CPTMutableLineStyle
lineStyle];
aaplSymbolLineStyle.lineColor = aaplColor;
CPTPlotSymbol *aaplSymbol = [CPTPlotSymbol rectanglePlotSymbol];
aaplSymbol.fill = [CPTFill fillWithColor:aaplColor];
aaplSymbol.lineStyle = aaplSymbolLineStyle;
aaplSymbol.size = CGSizeMake(6.0f, 6.0f);
plot.plotSymbol = aaplSymbol;
CPTMutableLineStyle *aaplLineStyle1 = [googPlot.dataLineStyle
mutableCopy];
aaplLineStyle1.lineWidth = 1.5;
aaplLineStyle1.lineColor = googColor;
googPlot.dataLineStyle = aaplLineStyle1;
CPTMutableLineStyle *aaplSymbolLineStyle1 = [CPTMutableLineStyle
lineStyle];
aaplSymbolLineStyle1.lineColor = googColor;
CPTPlotSymbol *aaplSymbol1 = [CPTPlotSymbol diamondPlotSymbol];
aaplSymbol1.fill = [CPTFill fillWithColor:googColor];
aaplSymbol1.lineStyle = aaplSymbolLineStyle1;
aaplSymbol1.size = CGSizeMake(6.0f, 6.0f);
googPlot.plotSymbol = aaplSymbol1;
CPTLegend *theLegend = [CPTLegend legendWithGraph:self.graph];
theLegend.numberOfRows = 1;
theLegend.fill = [CPTFill fillWithColor:[CPTColor
colorWithGenericGray:.8]];
theLegend.cornerRadius = 2.0;
theLegend.swatchSize = CGSizeMake(8.0, 5.0);
theLegend.rowMargin = 5.0;
theLegend.paddingLeft = 5.0;
theLegend.paddingTop = 5.0;
theLegend.paddingRight = 5.0;
theLegend.paddingBottom = 5.0;
self.graph.legend = theLegend;
self.graph.legendAnchor = CPTRectAnchorTopLeft;
self.graph.legendDisplacement = CGPointMake(120.0, -2.0);
graph.plotAreaFrame.borderLineStyle = nil;
i am using the core plot framework..