public static Month getMonth(final String id) {
for (Month aMonth : Month.values()) {
if (aMonth.toString().equals(id)) {
return aMonth;
}
}
throw new IllegalArgumentException("invalid calendar value " + id);
}
/**
* DESCRIPTION: Obtains (x,y) values from the current data set for plotting. Also calculates the
* range (min/max) of x-axis and y-axis values for the series.
*
* @return a SimpleXYSeries instance containing (x,y) values to plot.
*/
private SimpleXYSeries getPlotSeries() {
final String tag = TAG + ".getPlotSeries()";
// create lists of x-axis, and y-axis numbers to plot
List<Number> xNumbers = new LinkedList<Number>();
List<Number> yNumbers = new LinkedList<Number>();
// get numbers to plot from gas record monthly data, where (x,y) is:
// x = sequential index [0..n] with labels mapped to specific months
// y = calculated gallons used for that month
sumy = 0;
miny = Float.MAX_VALUE;
maxy = Float.MIN_VALUE;
minx = Long.MAX_VALUE;
maxx = Long.MIN_VALUE;
xlabels.clear();
long x = 0L;
float y = 0f;
for (Month month : PlotActivity.monthly) {
y = PlotActivity.monthly.getTrips(month).getGallons();
Log.d(tag, "month=" + month.toString() + " x=" + x + " y=" + y);
minx = Math.min(minx, x);
maxx = Math.max(maxx, x);
miny = Math.min(miny, y);
maxy = Math.max(maxy, y);
xNumbers.add(x);
yNumbers.add(y);
sumy += y;
xlabels.put(x++, month.getLabel());
}
// adjust min/max values if no data
if (xNumbers.isEmpty()) minx = maxx = 0;
if (yNumbers.isEmpty()) miny = maxy = 0;
// calculate average for the series
average = 0;
if (!yNumbers.isEmpty()) {
average = sumy / yNumbers.size();
}
Log.d(tag, "minx=" + minx + " maxx=" + maxx);
Log.d(tag, "miny=" + miny + " maxy=" + maxy);
Log.d(tag, "sumy=" + sumy + " size=" + yNumbers.size() + " average=" + average);
// create a new series from the x and y axis numbers
String title = "";
return new SimpleXYSeries(xNumbers, yNumbers, title);
}
/**
* @param date
* @throws DateParseException
*/
public void parseDate(String date) throws DateParseException {
String[] dateChunks = date.split(DELIMETER);
if (dateChunks.length != 3) {
throw new DateParseException(
"Date not properly formatted, " + date + " should have been in the form DD-MM-YYYY");
}
try {
year = Integer.parseInt(dateChunks[2]);
if (year > YEAR_MAX || year < YEAR_MIN) {
throw new DateParseException(
"Year field for "
+ date
+ " is beyond the valid range of "
+ YEAR_MIN
+ " and "
+ YEAR_MAX);
}
} catch (NumberFormatException nfe) {
throw new DateParseException("Year field for " + date + " did not parse properly");
}
try {
month = Month.values()[Integer.parseInt(dateChunks[1])];
} catch (Exception ex) {
// covers Array Index Out of Bounds
throw new DateParseException("Month field for " + date + " did not parse properly");
}
try {
dayOfMonth = Integer.parseInt(dateChunks[0]);
month.setYear(this.year);
if (dayOfMonth > month.daysInMonth()) {
throw new DateParseException(
"Day field for " + date + " was out of range for month " + month.toString());
}
} catch (NumberFormatException nfe) {
throw new DateParseException("Day field for " + date + " did not parse properly");
}
}
