Package org.jzy3d.maths

Class Utils

java.lang.Object
org.jzy3d.maths.Utils
public class Utils extends Object

  • Constructor Summary

    Constructors
    Constructor
    Description
    Utils()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static double[]
    abs(double[] values)
    Computes the absolute values of an array of doubles.
    static String
    blanks(int length)
     
    static long
    dat2num(Date date)
     
    static String
    dat2str()
     
    static String
    dat2str(String format)
     
    static String
    dat2str(Date date)
    Convert a date to the format "dd/MM/yyyy HH:mm:ss".
    static String
    dat2str(Date date, String format)
    Some example format dd.MM.yy 09.04.98 yyyy.MM.dd G 'at' hh:mm:ss z 1998.04.09 AD at 06:15:55 PDT EEE, MMM d, ''yy Thu, Apr 9, '98 h:mm a 6:15 PM H:mm 18:15 H:mm:ss:SSS 18:15:55:624 K:mm a,z 6:15 PM,PDT yyyy.MMMMM.dd GGG hh:mm aaa 1998.April.09 AD 06:15 PM
    static Date
    max(Date[] dates)
    Return the maximal date of an array
    static Date
    min(Date[] dates)
    Return the minimal date of an array
    static Date
    num2dat(long value)
     
    static String
    num2str(char parseMode, double num)
    Same as num2str(char,double,int) but does not query precision.
    static String
    num2str(char parseMode, double num, int precision)
    Convert a number into a string, with precision number of meaningfull digits.
    static String
    num2str(double num)
    Convert a number into a string.
    static String
    num2str(double num, int precision)
     
    static Date
    str2date(String string)
     
    static double
    sum(double[] values)
    Computes the sum of an array of doubles.
    static int
    sum(int[] values)
    Computes the sum of an array of doubles.
    static String
    time2str(long milli)
     
    static double[]
    vector(double min, double max)
    Generate a vector containing regular increasing values from min to max, with an offset 1.
    static double[]
    vector(double min, double max, int nstep)
    Generate a vector containing regular increasing values from min to max, with an offset of nstep.
    static int[]
    vector(int min, int max)
    Generate a vector containing regular increasing values from min to max, with an offset 1.
    static int[]
    vector(int min, int max, int nstep)
    Generate a vector containing regular increasing values from min to max, with an offset of nstep.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Utils

      public Utils()

  • Method Details

    • num2str

      public static String num2str(char parseMode, double num, int precision)
      Convert a number into a string, with precision number of meaningfull digits. 'd' integral The result is formatted as a decimal integer 'o' integral The result is formatted as an octal integer 'x', 'X' integral The result is formatted as a hexadecimal integer 'e', 'E' floating point The result is formatted as a decimal number in computerized scientific notation 'f' floating point The result is formatted as a decimal number 'g', 'G' floating point The result is formatted using computerized scientific notation or decimal format, depending on the precision and the value after rounding.
      See Also:
      • invalid @see 
        ://java.sun.com/j2se/1.5.0/docs/api/java/util/Formatter.html#syntax
      • invalid @see 
        String.format

    • num2str

      public static String num2str(char parseMode, double num)
      Same as num2str(char,double,int) but does not query precision.

    • num2str

      public static String num2str(double num, int precision)

    • num2str

      public static String num2str(double num)
      Convert a number into a string.

    • dat2str

      public static String dat2str()

    • dat2str

      public static String dat2str(Date date)
      Convert a date to the format "dd/MM/yyyy HH:mm:ss".

    • dat2str

      public static String dat2str(String format)

    • dat2str

      public static String dat2str(Date date, String format)
      Some example format dd.MM.yy 09.04.98 yyyy.MM.dd G 'at' hh:mm:ss z 1998.04.09 AD at 06:15:55 PDT EEE, MMM d, ''yy Thu, Apr 9, '98 h:mm a 6:15 PM H:mm 18:15 H:mm:ss:SSS 18:15:55:624 K:mm a,z 6:15 PM,PDT yyyy.MMMMM.dd GGG hh:mm aaa 1998.April.09 AD 06:15 PM
      Parameters:
      date -
      format -
      Returns:
      See Also:
      • invalid @see 
        ://java.sun.com/docs/books/tutorial/i18n/format/simpleDateFormat. html

    • dat2num

      public static long dat2num(Date date)

    • num2dat

      public static Date num2dat(long value)

    • time2str

      public static String time2str(long milli)

    • blanks

      public static String blanks(int length)

    • abs

      public static double[] abs(double[] values)
      Computes the absolute values of an array of doubles.
      Parameters:
      values -
      Returns:
      the sum of input values

    • sum

      public static double sum(double[] values)
      Computes the sum of an array of doubles. NaN values are ignored during the computation.
      Parameters:
      values -
      Returns:
      the sum of input values

    • sum

      public static int sum(int[] values)
      Computes the sum of an array of doubles. NaN values are ignored during the computation.
      Parameters:
      values -
      Returns:
      the sum of input values

    • vector

      public static double[] vector(double min, double max, int nstep)
      Generate a vector containing regular increasing values from min to max, with an offset of nstep.
      Parameters:
      min -
      max -
      nstep -
      Returns:

    • vector

      public static double[] vector(double min, double max)
      Generate a vector containing regular increasing values from min to max, with an offset 1.
      Parameters:
      min -
      max -
      Returns:

    • vector

      public static int[] vector(int min, int max, int nstep)
      Generate a vector containing regular increasing values from min to max, with an offset of nstep.
      Parameters:
      min -
      max -
      nstep -
      Returns:

    • vector

      public static int[] vector(int min, int max)
      Generate a vector containing regular increasing values from min to max, with an offset 1.
      Parameters:
      min -
      max -
      Returns:

    • min

      public static Date min(Date[] dates)
      Return the minimal date of an array
      Parameters:
      dates -
      Returns:

    • max

      public static Date max(Date[] dates)
      Return the maximal date of an array
      Parameters:
      dates -
      Returns:

    • str2date

      public static Date str2date(String string) throws ParseException
      Throws:
      ParseException