'm trying to graph multiple plot in one graph. When I know how many plot I want to graph, I can doit. The problem arise when I need to graph many plot based on core data entity.For example, if the core data entity has 5 count, then I need to draw 5 plots in one graph. I've successfully set up the plot, as you can see in the picture. https://www.flickr.com/photos/45474162@N05/13514560393/lightbox/
This is the setup code for the scatter plot and data
This is for generating data:
Problems: For this core plot, based on the core data entity has 2 counts. That's why I need to 2 plots in the graph, if you see the legend of the plot, it seems that I have successfully prepare for 2 plots.
problem is, when I do checking for the identifier, in the
How to fix this?
Thanks
Regards,
This is the setup code for the scatter plot and data
Code:
-(void)renderInLayer:(CPTGraphHostingView *)layerHostingView withTheme:(CPTTheme *)theme animated:(BOOL)animated
{
CGRect frame1 = CGRectMake(10,150,300,250);
FESubView = [[CPTGraphHostingView alloc]initWithFrame:frame1];
FESubView.allowPinchScaling = YES;
[self.view addSubview:FESubView];
#if TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE
CGRect bounds = layerHostingView.bounds;
#else
CGRect bounds = NSRectToCGRect(layerHostingView.bounds);
#endif
CPTGraph *graph = [[CPTXYGraph alloc] initWithFrame:bounds];
[graph applyTheme:[CPTTheme themeNamed:kCPTDarkGradientTheme]];
FESubView.hostedGraph = graph;
graph.title = @"Fuel Economy Graph";
CPTMutableTextStyle *titleStyle = [CPTMutableTextStyle textStyle];
titleStyle.color = [CPTColor whiteColor];
titleStyle.fontName = @"Helvetica-Bold";
titleStyle.fontSize = 14.0f;
graph.titleTextStyle = titleStyle;
graph.titlePlotAreaFrameAnchor = CPTRectAnchorTop;
graph.titleDisplacement = CGPointMake(0.0f, 10.0f);
// 4 - Set padding for plot area
[graph.plotAreaFrame setPaddingLeft:40.0f];
[graph.plotAreaFrame setPaddingBottom:65.0f];
[graph.plotAreaFrame setPaddingTop:3.0f];
[graph.plotAreaFrame setPaddingRight:3.0f];
// Setup scatter plot space
CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)graph.defaultPlotSpace;
NSTimeInterval xLow = 0.0f;
plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(xLow) length:CPTDecimalFromFloat(oneDay * 10)];
plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(5.0) length:CPTDecimalFromFloat(10.0f)];
//symbol
CPTMutablePlotRange *xRange = [plotSpace.xRange mutableCopy];
[xRange expandRangeByFactor:CPTDecimalFromCGFloat(1)];
plotSpace.allowsUserInteraction = YES;
// Create a plot that uses the data source method
CPTMutableTextStyle *feLabelStyle = [CPTMutableTextStyle textStyle];
feLabelStyle.fontSize = 10;
feLabelStyle.color = [CPTColor whiteColor];
NSArray *cptColors = [[NSArray alloc]initWithObjects:[CPTColor blueColor],[CPTColor yellowColor],[CPTColor greenColor],[CPTColor orangeColor],[CPTColor whiteColor], nil];
[self fetchVehicleModel];
int counts = [self.fullVehicleData count];
int i;
for (i = 0; i < counts; i++)
{
CPTScatterPlot *dataSourceLinePlot = [[CPTScatterPlot alloc] init];
dataSourceLinePlot.identifier = [[self.fullVehicleData valueForKey:@"vModel"] objectAtIndex:i];
CPTColor *feColor = cptColors[i];
CPTMutableLineStyle *feLineStyle = [dataSourceLinePlot.dataLineStyle mutableCopy];
feLineStyle.lineWidth = 2.5;
feLineStyle.lineColor = feColor;
dataSourceLinePlot.dataLineStyle = feLineStyle;
CPTMutableLineStyle *feSymbolLineStyle = [CPTMutableLineStyle lineStyle];
feSymbolLineStyle.lineColor = feColor;
CPTPlotSymbol *feSymbol = [CPTPlotSymbol ellipsePlotSymbol];
feSymbol.fill = [CPTFill fillWithColor:feColor];
feSymbol.lineStyle = feSymbolLineStyle;
feSymbol.size = CGSizeMake(6.0f, 6.0f);
dataSourceLinePlot.plotSymbol = feSymbol;
//CPTTextStyle *test = [CPTTextStyle textStyle];
//test.fontSize = 12;
CPTMutableTextStyle *feLabelStyle1 = [CPTMutableTextStyle textStyle];
feLabelStyle1.fontSize = 10;
feLabelStyle1.color = [CPTColor whiteColor];
dataSourceLinePlot.labelTextStyle = feLabelStyle;
//
dataSourceLinePlot.dataSource = self;
dataSourceLinePlot.title = [[self.fullVehicleData valueForKey:@"vModel"] objectAtIndex:i];
[graph addPlot:dataSourceLinePlot];
CPTColor *areaColor = [CPTColor colorWithComponentRed:0.3
green:1.0 + i
blue:0.3
alpha:0.3];
CPTGradient *areaGradient = [CPTGradient gradientWithBeginningColor:areaColor
endingColor:[CPTColor clearColor]];
areaGradient.angle = -90.0f;
CPTFill *areaGradientFill = [CPTFill fillWithGradient:areaGradient];
dataSourceLinePlot.areaFill = areaGradientFill;
dataSourceLinePlot.areaBaseValue = CPTDecimalFromString(@"1.75");
CPTMutableTextStyle *axisTextStyle = [[CPTMutableTextStyle alloc] init];
axisTextStyle.color = [CPTColor whiteColor];
axisTextStyle.fontName = @"Helvetica-Bold";
axisTextStyle.fontSize = 8.0f;
// Axes
CPTXYAxisSet *axisSet = (CPTXYAxisSet *)graph.axisSet;
CPTXYAxis *x = axisSet.xAxis;
x.majorIntervalLength = CPTDecimalFromFloat(oneDay);
x.orthogonalCoordinateDecimal = CPTDecimalFromString(@"5");
x.minorTicksPerInterval = 0;
x.labelTextStyle = axisTextStyle;
dateFormatter = [self setDateFormatter];
CPTTimeFormatter *timeFormatter = [[CPTTimeFormatter alloc] initWithDateFormatter:dateFormatter];
timeFormatter.referenceDate = _refDate;
x.labelFormatter = timeFormatter;
x.labelRotation = M_PI / 4;
x.tickLabelDirection = CPTSignPositive;
x.tickDirection = CPTSignPositive;
x.labelOffset = -50;
CPTXYAxis *y = axisSet.yAxis;
y.majorIntervalLength = CPTDecimalFromString(@"5.0");
y.minorTicksPerInterval = 10;
y.orthogonalCoordinateDecimal = CPTDecimalFromString(@"5");
graph.legend = [CPTLegend legendWithGraph:graph];
graph.legend.borderLineStyle = x.axisLineStyle;
graph.legend.fill = [CPTFill fillWithColor:[CPTColor darkGrayColor]];
graph.legend.cornerRadius = 5.0;
graph.legend.swatchSize = CGSizeMake(20, 20);
graph.legendAnchor = CPTRectAnchorBottom;
graph.legend.textStyle = axisTextStyle;
graph.legendDisplacement = CGPointMake(2.40, 8.0);
}
}
Code:
-(void)generateData
{
if ( !plotData ) {
NSDateComponents *dateComponents = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ) fromDate:[[self.fullTransaction valueForKey:@"tDate" ] objectAtIndex:0]];
_refDate = [gregorian dateFromComponents:dateComponents];
NSDate *dataDate = [[NSDate alloc]init];
NSDateComponents *comps;
int days;
// Add some data
NSMutableArray *newData = [NSMutableArray array];
// NSMutableArray *newData1 = [NSMutableArray array];
NSUInteger i;
NSArray *array1 = nil;
NSMutableArray *carArray = [NSMutableArray arrayWithArray:array1];
//NSUInteger
NSLog(@"model count is: %lu",(unsigned long)[[self.fullVehicleData valueForKey:@"vModel"] count]);
for (int vecCount = 0; vecCount < [[self.fullVehicleData valueForKey:@"vModel"] count]; vecCount ++)
{
NSString *make = [[self.fullVehicleData valueForKey:@"vMake"] objectAtIndex:vecCount];
NSString *model = [[self.fullVehicleData valueForKey:@"vModel"] objectAtIndex:vecCount];
NSArray *array = [self filterArraybyMake:make andWithModel:model];
[carArray addObjectsFromArray:array];
NSLog(@"car Array are: %@",carArray);
//}
}
for ( i = 0; i < [[self.fullTransaction valueForKey:@"tDate"]count]; i++ )
{
//Calculate days difference between dataDate and RefDate
dataDate = [[self.fullTransaction valueForKey:@"tDate"]objectAtIndex:i];
NSLog(@"RefDate is: %@",_refDate);
NSLog(@"DateDate is: %@",dataDate);
comps = [gregorian components:NSDayCalendarUnit fromDate:_refDate toDate:dataDate options:0];
days = [comps day] + 1;
NSTimeInterval x = oneDay *days;
int counts = [carArray count];
id y;
//id z;
if (i < counts)
{
y = [[carArray valueForKey:@"tFuelEconomy" ] objectAtIndex:i];
}
else
y = NULL;
[newData addObject:
[NSDictionary dictionaryWithObjectsAndKeys:
[NSDecimalNumber numberWithFloat:x], [NSNumber numberWithInt:CPTScatterPlotFieldX],
y, [NSNumber numberWithInt:CPTScatterPlotFieldY],
nil]];
}
plotData = newData;
newData = nil;
}
}
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index
{
switch (fieldEnum)
{
case CPTScatterPlotFieldX:
{
NSDecimalNumber *num = [[plotData objectAtIndex:index] objectForKey:[NSNumber numberWithInt:fieldEnum]];
return num;
}
case CPTScatterPlotFieldY:
{
NSLog(@"Plot identifier = %@",plot.identifier);
int identifier = 0;
for (identifier =0;identifier < [self.fullVehicleData count];identifier ++)
{
NSLog(@"identifier from coredata is: %@",[[self.fullVehicleData valueForKey:@"vModel"]objectAtIndex:identifier]);
if ([plot.identifier isEqual:[[self.fullVehicleData valueForKey:@"vModel"]objectAtIndex:identifier]])
{
NSDecimalNumber *num = [[plotData objectAtIndex:index] objectForKey:[NSNumber numberWithInt:fieldEnum]];
NSLog(@"num is %@",num);
return num;
}
}
}
}
return nil;
}problem is, when I do checking for the identifier, in the
Code:
(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index, I always got the second plot.identifier value.Thanks
Regards,
Last edited by a moderator: