gistfile1.m

    //
    // Change the following piece of code
    //
    
    CGContextSaveGState(context);
    CGContextClip(context);
    
    if (_privateGradientBool == YES) {
        

        CGGradientRef gradient; // Gradient for the fill.
        CGColorSpaceRef colorSpace;
        size_t num_locations = 2;
        CGFloat locations[2] = {0.0f, 1.0f};
        CGFloat components[8] = GRADIENT_FILL;
        
        colorSpace = CGColorSpaceCreateDeviceRGB();
        gradient = CGGradientCreateWithColorComponents(colorSpace, components, locations, num_locations);
        CGPoint startPoint, endPoint;
        startPoint.x = OFFSET_X;
        startPoint.y = GRAPH_HEIGHT - OFFSET_Y;
        endPoint.x = OFFSET_X;
        endPoint.y = OFFSET_Y;
        
        CGContextDrawLinearGradient(context, gradient, startPoint, endPoint, 0);
        
        CGContextRestoreGState(context);
        CGColorSpaceRelease(colorSpace);
        CGGradientRelease(gradient);
        
    }

    //
    // To this
    //
    
    if (_privateGradientBool == YES) {
        
        CGContextSaveGState(context);
        CGContextClip(context);
        
        CGGradientRef gradient; // Gradient for the fill.
        CGColorSpaceRef colorSpace;
        size_t num_locations = 2;
        CGFloat locations[2] = {0.0f, 1.0f};
        CGFloat components[8] = GRADIENT_FILL;
        
        colorSpace = CGColorSpaceCreateDeviceRGB();
        gradient = CGGradientCreateWithColorComponents(colorSpace, components, locations, num_locations);
        CGPoint startPoint, endPoint;
        startPoint.x = OFFSET_X;
        startPoint.y = GRAPH_HEIGHT - OFFSET_Y;
        endPoint.x = OFFSET_X;
        endPoint.y = OFFSET_Y;
        
        CGContextDrawLinearGradient(context, gradient, startPoint, endPoint, 0);
        
        CGContextRestoreGState(context);
        CGColorSpaceRelease(colorSpace);
        CGGradientRelease(gradient);
        
    }