Real Time Data and Moving X happens automatically ?

[ArEnSc]

When I add entries into the graph, it continiously grows and expands the x axis, even when I clear the buffer to keep the size of the graph small, it expands the graph and only draws within the x 64 - 128 region.

The result is that the graph gets small and the graph expands for no reason. ill post an image.

I am just trying to get the graph to pop the previous x and y points to prevent a data overflow and keep the window size to be large enough to show 128 data points.

Any advice?

-(void) setupGraphy {
    // Delegate
    self.graphy.delegate = self;

    // Descriptions
    self.graphy.descriptionText = @"";
    self.graphy.noDataTextDescription = @"You need to start recording";

    // Actions
    self.graphy.dragEnabled = YES;
    self.graphy.scaleXEnabled = YES;
    self.graphy.drawGridBackgroundEnabled = YES;
    self.graphy.pinchZoomEnabled = NO;

    // x Axis is every 16 miliseconds

    // Raw Data -> ChartEntries -> ChartDataSet -> Multiple ChartDataSets ->

    // create the y values data entry on the chart.
    NSMutableArray* chartDataEntries = [NSMutableArray array];

    /**
    for (int i = 0; i < [ax count];i++ ) {
        ChartDataEntry* entry = [[ChartDataEntry alloc] initWithValue:[ax[i] doubleValue] xIndex:i];
        [chartDataEntries addObject:entry];
    }**/

    self.setAx = [[LineChartDataSet alloc] initWithYVals:chartDataEntries];

    self.setAx.axisDependency = AxisDependencyLeft;
    [self.setAx setColor:[UIColor flatRedColor]];
    [self.setAx setCircleColor:[UIColor flatRedColorDark]];


    self.setAx.lineWidth = 0.5;
    self.setAx.circleRadius = 0.1;
    self.setAx.fillAlpha = 65/255.0;
    self.setAx.fillColor = [UIColor flatWhiteColor];
    self.setAx.drawCircleHoleEnabled = NO;

    self.data = [[LineChartData alloc] initWithXVals:[NSMutableArray array] dataSet:self.setAx];

    // Adds entry to the data set
    //[data addEntry:0 dataSetIndex:0];
    //self.graphy moveViewToX:];
    //[self.graphy notifyDataSetChanged];
    self.graphy.data = self.data;

}


- (IBAction)startRecordingPressed:(id)sender {

    UIButton* button = sender;

    __weak typeof(self) weakSelf = self;

    // If the text is Start recording start recording and change the text to stop hack I know
    if([button.titleLabel.text isEqualToString:@"Start Recording"]) {

    button.titleLabel.text = @"Stop Recording";

    [self.motionManager startAccelerometerUpdatesToQueue:self.aQueue withHandler:^(CMAccelerometerData * _Nullable accelerometerData, NSError * _Nullable error) {

        SensorData* data = [[SensorData alloc] initWithType:SensorAccelerometer andX:accelerometerData.acceleration.x andY:accelerometerData.acceleration.y andZ:accelerometerData.acceleration.z];

        static int s = 0;
        s = (s + 1) % 128;
        __block ChartDataEntry* entry = [[ChartDataEntry alloc] initWithValue:accelerometerData.acceleration.x xIndex:s];


        dispatch_async(dispatch_get_main_queue(), ^{
            [self.data addEntry:entry dataSetIndex:0];
            NSString* v = [NSString stringWithFormat:@"%zd",s];
            NSLog(@"%@",v);
            [self.data addXValue:v];
            //[self.graphy moveViewToX:s];

            if (s > 64) {
                [self.data removeXValue:0];
                [self.data removeEntryByXIndex:0 dataSetIndex:0];
            }

            [self.graphy notifyDataSetChanged];



        });


    }];
}