title: Similarity of trends in time series analysis
body: <p>I am new in time series analysis. I am trying to find the trend of a short (1 day) temperature time series and tried to different approximations. Moreover, sampling frequency is 2 minute. The data were collocated for different stations. And I will compare different trends to see whether they are similar or not.</p>
  
  <p>I am facing three challenges in doing this:</p>
  
  <p>Q1 - How I can extract the pattern?</p>
  
  <p>Q2 - How I can quantify the trend since I will compare trends belong to two different places?</p>
  
  <p>Q3 - When can I say two trends are similar or not similar?</p>