Question

need help finiding slope and placement for the farenheit in the eaquation for a java.util.Scanner

COMP163 Greensboro Weather Trends There has been significant debate about global warming. Instead of answering the big question, your program is to determine if (and by how much) Greensboro has been warming for the past few decades. For this assignment you are to write a program that reads a file created with data from the National Climatic Data Center to determine the average annual minimum temperature. This value for all years is then statistically averaged to determine by how much the value is increasing. The file weatherDaily.dat contains several years of Greensboro daily weather data sorted by increasing date Each line in the file represents one day's weather and contains the values year month date of this weather record date of this weather record from 1 to 12 date of this weather record from 1 to 31 precipitation amount of precipitation on this day in tenths of a centimeter snow daily high highest temperature recorded on this dav in tenths of a degree Celsius daily lowlowest temperature recorded on this day in tenths of a degree Celsius amount of snow that fell on this day in tenths of a centimeter All values are integers. The program only requires the year, month, day and daily low, although your program must read all data values in each line. Each year in the file starts with January 1 and ends with December 31. The temperature in tenths of a degree Celsius can be converted to degrees Fahrenheit by 9.C + 32.0 To calculate the average annual low temperature for a year, the program must sum 50 the low temperature for each day and count the number of days. On December 31, the program should divide the sum of the daily lows by the number of days to get the average low temperature. While the average changes each year, a long term trend can be found by calculating a least squares fit to the annual average low data. The slope of an average line though the data can be calculated by numYears * X(year * avg) - 2 year * L avg numYears * Lyear2 - Lyear* Lyear where: numYears is the number of years of is the sum of the years (i.e. 1974 + 1975 + 1976+ +2015) ear yearis the sum of the square of the years (i.e. 19742+ 19752 +1976 is the sum of the annual average low temperature + 20152) avg (year avg) is the sum of each annual average low temperature multiplied by the year number

Answer 1

//GreensboroWarning.java
public class GreensboroWarning{
public static void main (String [] args)throws java.io.FileNotFoundException{

  
java.io.File holder= new java.io.File("weatherDaily.txt");
java.util.Scanner read= new java.util.Scanner(holder);

int year, month, day, precipitation, snow, dailyHigh, dailyLow;
int counterDay=0;
int counterYear=0;// initallize variable to 0
int sumOfYear=0;// initalliaze variable to 0
int yearSquared=0;
double sumAverageLow=0;
double sumYearTAverLow=0;
double fahHigh;
double fahLow=0.0;
double averageLow=0,slope=0;
double slopedegree;
while (read.hasNext()){
year=read.nextInt();// read first integer for year
month=read.nextInt();// read second integer for month
day=read.nextInt();// read third integer for day
precipitation=read.nextInt();
snow=read.nextInt();// fifth for snow
dailyHigh=read.nextInt();//sixth for daily high temp

dailyLow=read.nextInt();// seventh for daily low temp
fahLow+=((9.0* dailyLow)/50.0)+32.0;// change degree to fah

counterDay++;//count the days
if (month==12 && day==31){
averageLow= fahLow/(counterDay*1.0);
System.out.println(year+ " " +averageLow);
counterYear++;
sumOfYear+=year;
yearSquared+=year * year;
sumAverageLow+=averageLow;
sumYearTAverLow+=year*averageLow;  
counterDay=0;
fahLow=0;


}
}
  
slope=(counterYear*sumYearTAverLow-sumOfYear*sumAverageLow)/(counterYear* yearSquared -sumOfYear*sumOfYear);// calculate temp
System.out.println("increase in annual low is "+slope+ " degrees per year");// display the temperture
slopedegree=(1/slope);
System.out.println(+slopedegree+"years to change one degree");

  
}

}

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sample output

Error Log Tasks L Problems Console X Search | <terminated> GreensboroWarning [Java Application C:Program Files Javajre7 bin javaw.exe (30-Sep-2017 9:30:20 PM) 1992 47.66344262295082 1993 48.178301369863 1994 47.777863013698656 1995 48.238958904109595 1996 46.9129508196721 1997 46.644602739726004 1998 50.11441095890412 1999 48.677369863013666 2000 47.674754098360665 2001 48.48849315068496 2002 49.44273972602738 2003 48.835178082191725 2004 49.66704918032784 2005 49.74553424657531 2006 49.952657534246576 2007 50.7653698630137 2008 49.53524590163933 2009 49.59610958904107 2010 49.60942465753429 2011 50.16520547945209 2012 50.76426229508196 2013 49.01419178082189 2014 48.048602739726 increase in annual low is 0.07736396979351584 degrees per year 12.92591373825563years to change one degree