public static void fileWithColdestTemperature() {
String fileName = null;
CSVRecord lowestSoFar = null;
double lowestTemp = 99999;
DirectoryResource dr = new DirectoryResource();
for (File f : dr.selectedFiles()) {
FileResource fr = new FileResource(f);
CSVRecord currentRow = coldestHourInFile(fr.getCSVParser());
double currentTemp = Double.parseDouble(currentRow.get("TemperatureF"));
if (currentTemp < lowestTemp) {
lowestTemp = currentTemp;
lowestSoFar = currentRow;
fileName = f.getName();
}
/*
if (lowestSoFar == null) {
lowestSoFar = currentRow;
fileName = f.getName();
selectedFr = fr;
} else {
lowestSoFar = getLowestOfTwo(currentRow, lowestSoFar);
fileName = f.getName();
selectedFr = fr;
}
*/
}
System.out.println("Coldest day was in file " + fileName);
System.out.println("Coldest temperature on that day was " + lowestSoFar.get("TemperatureF"));
System.out.println("All the Temperatures on the coldest day were:");
}
public static CSVRecord getLargestOfTwo(CSVRecord currentRow, CSVRecord largestSoFar) {
double currentTemp = Double.parseDouble(currentRow.get("TemperatureF"));
double largestTemp = Double.parseDouble(largestSoFar.get("TemperatureF"));
if (currentTemp > largestTemp) {
largestSoFar = currentRow;
}
return largestSoFar;
}
public static double averageTemperatureInFile(CSVParser parser) {
int count = 0;
double tempAcc = 0;
for (CSVRecord rec : parser) {
tempAcc = tempAcc + Double.parseDouble(rec.get("TemperatureF"));
count++;
}
return tempAcc / count;
}
public static CSVRecord getLowestOfTwo(CSVRecord currentRow, CSVRecord lowestSoFar) {
double currentTemp = Double.parseDouble(currentRow.get("TemperatureF"));
double lowestTemp = Double.parseDouble(lowestSoFar.get("TemperatureF"));
if (lowestTemp == -9999) {
lowestSoFar = currentRow;
}
if (currentTemp < lowestTemp && currentTemp != -9999) {
lowestSoFar = currentRow;
}
return lowestSoFar;
}
public static CSVRecord coldestHourInFile(CSVParser parser) {
CSVRecord lowestSoFar = null;
double lowestTemp = 999999;
for (CSVRecord currentRow : parser) {
double currentTemp = Double.parseDouble(currentRow.get("TemperatureF"));
if (currentTemp != -9999 & currentTemp < lowestTemp) {
lowestTemp = currentTemp;
lowestSoFar = currentRow;
}
}
return lowestSoFar;
}
public static CSVRecord lowestHumidityInManyFiles() {
CSVRecord lowestRecordSoFar = null;
double lowestHumiditySoFar = 101;
DirectoryResource dr = new DirectoryResource();
for (File f : dr.selectedFiles()) {
FileResource fr = new FileResource(f);
CSVParser parser = fr.getCSVParser();
CSVRecord record = lowestHumidityInFile(parser);
double currentHumidity = Double.parseDouble(record.get("Humidity"));
if (currentHumidity < lowestHumiditySoFar) {
lowestHumiditySoFar = currentHumidity;
lowestRecordSoFar = record;
}
}
return lowestRecordSoFar;
}
public static CSVRecord lowestHumidityInFile(CSVParser parser) {
CSVRecord lowestSoFarRecord = null;
double lowestSoFar = 101;
for (CSVRecord r : parser) {
double currentHumidity;
if (!r.get("Humidity").equals("N/A")) {
currentHumidity = Double.parseDouble(r.get("Humidity"));
} else {
currentHumidity = 101;
}
if (currentHumidity < lowestSoFar) {
lowestSoFar = currentHumidity;
lowestSoFarRecord = r;
}
}
return lowestSoFarRecord;
}
public static double averageTemperatureWithHighHumidityInFile(CSVParser parser, double value) {
int count = 0;
double tempAcc = 0;
for (CSVRecord rec : parser) {
double currentHumidity;
if (!rec.get("Humidity").equals("N/A")) {
currentHumidity = Double.parseDouble(rec.get("Humidity"));
} else {
currentHumidity = -1;
}
double currentTemp = Double.parseDouble(rec.get("TemperatureF"));
if (currentHumidity > value && currentTemp != -9999) {
tempAcc = tempAcc + currentTemp;
count++;
}
}
if (count == 0) {
return -9999;
} else {
return tempAcc / count;
}
}
public static void testColdestHourInFile() {
FileResource fr = new FileResource();
CSVParser parser = fr.getCSVParser();
CSVRecord coldest = coldestHourInFile(parser);
System.out.println(coldest.get("TemperatureF") + " at " + coldest.get("TimeEST"));
}
public static void testLowestHumidityInManyFiles() {
CSVRecord cvr = lowestHumidityInManyFiles();
System.out.println("Lowest Humidity was " + cvr.get("Humidity") + " at " + cvr.get("DateUTC"));
}
public static void testLowestHumidityInFile() {
FileResource fr = new FileResource();
CSVParser parser = fr.getCSVParser();
CSVRecord csv = lowestHumidityInFile(parser);
System.out.println("Lowest Humidity was " + csv.get("Humidity") + " at " + csv.get("DateUTC"));
}
