IllegalArgumentException: new x-value must be greater then the last value. x-values has to be ordered in ASC.

[evgenij1987]

02-15 19:17:02.035 15379-15379/com.example.ti.ble.sensortag E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.ti.ble.sensortag, PID: 15379 Theme: themes:{default=overlay:system, iconPack:system, fontPkg:system, com.android.systemui=overlay:system, com.android.systemui.navbar=overlay:system} java.lang.IllegalArgumentException: new x-value must be greater then the last value. x-values has to be ordered in ASC. at com.jjoe64.graphview.series.BaseSeries.checkValueOrder(BaseSeries.java:486) at com.jjoe64.graphview.series.BaseSeries.appendData(BaseSeries.java:408) at com.jjoe64.graphview.series.LineGraphSeries.appendData(LineGraphSeries.java:646) at com.jjoe64.graphview.series.BaseSeries.appendData(BaseSeries.java:464) at com.example.ti.internal.sensors.InternalWifiRssiProfile.updateValue(InternalWifiRssiProfile.java:33) at com.example.ti.services.measurement.PhoneSensorListener.notifySensorProfiles(PhoneSensorListener.java:46) at com.example.ti.services.measurement.PhoneSensorListener.onCustomSensorChanged(PhoneSensorListener.java:25) at com.example.ti.services.measurement.MeasurementService$2.run(MeasurementService.java:68) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5461) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Hi, the GraphView works like a sharm, BUT I experience the following issue when running this code periodically:

`public void updateValue( ) { WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); WifiInfo wifiInfo = wifiManager.getConnectionInfo();

    values[0]=new Point3D(wifiInfo.getRssi(),0,0);

    series.appendData(new DataPoint(new Date(),values[0].v), true,200);
    sensorValue.setText(String.format("%.1f", values[0].v));
}`

Thus, basically Date is used as x of the graph, such that this error shouldn't occur. Any ideas?

Many thanks in advance! :-)

[mnsekh111]

Try resetting the line series associated with the graphview. series.resetData(new DataPoint[] {})

[littlecurl]

I meet the same Bug. I used a sortedMap to solve the problem. Part of my code is here:

var sortedMap = sortedMapOf<Double,Double>()
while (cursor.moveToNext()) {
    val year = cursor.getInt(cursor.getColumnIndex("year"))
    var rank = cursor.getInt(cursor.getColumnIndex("rank"))
    sortedMap.put(year.toDouble(),rank.toDouble())
    Log.d("Tag","name = $name, year = $year, rank = $rank")
}
   cursor.close()
    // foreach a map in kotlin 
   for ((year,rank) in sortedMap) {
        series.appendData(DataPoint(year.toDouble(),rank.toDouble()),false,maxPoints)
   }
graph_view.removeAllSeries()
graph_view.addSeries(series)

[Ali-Nass]

Having the same issue, my csv is from a dataset where the X is time so it's impossible to not be in an ASC order

[RiaAsgekar]

For me too, the X axis is dates that are already in ascending order.

[thirstyone]

how do I update a graph in real time (as in a scope), with data arriving several times per second? It would be nice to have appendRoundRobin method that would append data to the right and remove it from the left...