title: Plotting a second plotspace
body: <p>I have two plot spaces</p>
  
  <pre><code>//First Plot Space
  self.plotSpace1 =(CPTXYPlotSpace *) self.hostingView.hostedGraph.defaultPlotSpace;
  
  [self.plotSpace1 setYRange: [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0) length:CPTDecimalFromFloat(100)]];
  
  [self.plotSpace1 setXRange: [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(([startNumber floatValue]/1000000) ) length:CPTDecimalFromFloat( ([endLength floatValue]/1000000))]];
  
  //Second Plot Space
  self.plotSpace2 =(CPTXYPlotSpace *) [self.hostingView.hostedGraph newPlotSpace];
  [self.plotSpace2 setGraph:self.hostingView.hostedGraph];
  [self.plotSpace2 setYRange: [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0) length:CPTDecimalFromFloat(1)]];
  [self.plotSpace2 setXRange: [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat( ([startNumber floatValue]/1000000) ) length:CPTDecimalFromFloat( ([endLength floatValue]/1000000) )]];
  [self.plotSpace2 setIdentifier:@"PLOT2"];
  
  [self.plotSpace2 setAllowsUserInteraction:YES];
  
  [self.hostingView.hostedGraph addPlotSpace:self.plotSpace2];
  </code></pre>
  
  <p>When I add a plot to the second plot space like so</p>
  
  <pre><code>CPTScatterPlot* plot = [[CPTScatterPlot alloc] initWithFrame:CGRectZero];
  plot.title = plotTitle;
  plot.dataSource = self;
  [plot setPlotSpace:self.plotSpace2];
  [self.hostingView.hostedGraph addPlot:plot toPlotSpace:self.plotSpace2];
  </code></pre>
  
  <p>I add a second y axis like so - the second y axis is displayed</p>
  
  <pre><code>CPTXYAxis *rightY = [(CPTXYAxis *)[CPTXYAxis alloc] initWithFrame:CGRectZero];
  rightY.axisConstraints = [CPTConstraints constraintWithUpperOffset:0.0];
  rightY.coordinate = CPTCoordinateY;
  rightY.plotSpace = self.plotSpace2;
  
  
  //Labeling and intervals
  rightY.labelingPolicy = CPTAxisLabelingPolicyFixedInterval;
  rightY.majorIntervalLength = CPTDecimalFromCGFloat(0.1f);
  rightY.minorTicksPerInterval = 5;
  
  rightY.orthogonalCoordinateDecimal = CPTDecimalFromDouble(self.plotSpace2.xRange.locationDouble + self.plotSpace2.xRange.lengthDouble);
  rightY.title = nil;
  
  
  //Format and position
  rightY.titleTextStyle = axisTitleStyle;
  rightY.titleOffset = 20.0f;
  rightY.axisLineStyle = axisLineStyle;
  rightY.labelTextStyle = axisTextStyle;
  rightY.labelOffset = 2.0f;
  rightY.majorTickLineStyle = axisLineStyle;
  rightY.majorTickLength = 4.0f;
  rightY.minorTickLength = 2.0f;
  rightY.tickDirection = CPTSignPositive;
  
  axisSet.axes = [NSArray arrayWithObjects:x, y, rightY, nil];
  </code></pre>
  
  <p>The line is not plotted.  However, if I add it to plotSpace1 (the default plot space) it is plotted.</p>
  
  <p>I have been stuck on this for a while now.  I have searched and searched like crazy for an answer.  Any help is appreciated.</p>