public BgGraphBuilder(Context context, long start, long end, int numValues) {
end_time = end;
start_time = start;
bgReadings = BgReading.latestForGraph(numValues, start, end);
calibrations = Calibration.latestForGraph(numValues, start, end);
this.context = context;
this.prefs = PreferenceManager.getDefaultSharedPreferences(context);
this.highMark = Double.parseDouble(prefs.getString("highValue", "170"));
this.lowMark = Double.parseDouble(prefs.getString("lowValue", "70"));
this.doMgdl = (prefs.getString("units", "mgdl").equals("mgdl"));
defaultMinY = unitized(40);
defaultMaxY = unitized(250);
pointSize = isXLargeTablet(context) ? 5 : 3;
axisTextSize = isXLargeTablet(context) ? 20 : Axis.DEFAULT_TEXT_SIZE_SP;
previewAxisTextSize = isXLargeTablet(context) ? 12 : 5;
hoursPreviewStep = isXLargeTablet(context) ? 2 : 1;
}
