How assess trend for time-series as a numeric metric in R?












1















Here is an example of data set converted into time-series object.
I'd like to find numeric metric 'x' that allows to identify type of trend.
Let say, x > 0 - "Rising Trend", x < 0 - "Falling Trend". The data has less than 2 seasons. Please, share your practical experience. Thanks.



# 1. Data set
df_data <- data.frame(
year = c(2000:2017),
count = c(3, 2, 1, 3, 17, 18, 59, 93, 144, 266, 263, 401, 802, 1263, 2366, 4170, 2617, 2382))

# 2. Time-series
ts_data <- ts(df_data$count, start = min(df_data$year), end = max(df_data$year), frequency = 1)

# 3. Plot
plot.ts(ts_data)

# 4. How identify up & down trend as a numeric metric?









share|improve this question





























    1















    Here is an example of data set converted into time-series object.
    I'd like to find numeric metric 'x' that allows to identify type of trend.
    Let say, x > 0 - "Rising Trend", x < 0 - "Falling Trend". The data has less than 2 seasons. Please, share your practical experience. Thanks.



    # 1. Data set
    df_data <- data.frame(
    year = c(2000:2017),
    count = c(3, 2, 1, 3, 17, 18, 59, 93, 144, 266, 263, 401, 802, 1263, 2366, 4170, 2617, 2382))

    # 2. Time-series
    ts_data <- ts(df_data$count, start = min(df_data$year), end = max(df_data$year), frequency = 1)

    # 3. Plot
    plot.ts(ts_data)

    # 4. How identify up & down trend as a numeric metric?









    share|improve this question



























      1












      1








      1








      Here is an example of data set converted into time-series object.
      I'd like to find numeric metric 'x' that allows to identify type of trend.
      Let say, x > 0 - "Rising Trend", x < 0 - "Falling Trend". The data has less than 2 seasons. Please, share your practical experience. Thanks.



      # 1. Data set
      df_data <- data.frame(
      year = c(2000:2017),
      count = c(3, 2, 1, 3, 17, 18, 59, 93, 144, 266, 263, 401, 802, 1263, 2366, 4170, 2617, 2382))

      # 2. Time-series
      ts_data <- ts(df_data$count, start = min(df_data$year), end = max(df_data$year), frequency = 1)

      # 3. Plot
      plot.ts(ts_data)

      # 4. How identify up & down trend as a numeric metric?









      share|improve this question
















      Here is an example of data set converted into time-series object.
      I'd like to find numeric metric 'x' that allows to identify type of trend.
      Let say, x > 0 - "Rising Trend", x < 0 - "Falling Trend". The data has less than 2 seasons. Please, share your practical experience. Thanks.



      # 1. Data set
      df_data <- data.frame(
      year = c(2000:2017),
      count = c(3, 2, 1, 3, 17, 18, 59, 93, 144, 266, 263, 401, 802, 1263, 2366, 4170, 2617, 2382))

      # 2. Time-series
      ts_data <- ts(df_data$count, start = min(df_data$year), end = max(df_data$year), frequency = 1)

      # 3. Plot
      plot.ts(ts_data)

      # 4. How identify up & down trend as a numeric metric?






      r time-series trend






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 14 '18 at 20:08







      andrii

















      asked Nov 14 '18 at 19:51









      andriiandrii

      9131013




      9131013
























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