margin = font.stringWidth("00.0");
detailsHeight = font.getHeight() + 2;
Log.log("font.getHeight()="+font.getHeight());
Log.log("detailsHeight="+detailsHeight );
height = getHeight() - detailsHeight;
tx = new Transformation(0, (getWidth() - margin) / 6, margin,
getWidth());
ty = new Transformation(Observation.MIN_TEMP, Observation.MAX_TEMP,
height, 0);
ity = new Transformation(0, height, Observation.MAX_TEMP,
Observation.MIN_TEMP);
backgroundStripeHeight = Math.abs(ty.get(Observation.MIN_TEMP)
- ty.get(Observation.MIN_TEMP + 10));
}