title: Plotting multiple lines in Tableau
body: <p>I read every possible forum and I couldn't find a specific answer. I'm new to Tableau and I need to perform what I thought would be a very simple task but I can't figure it out.</p>
  
  <p>I need to create a chart with multiple lines plotted in the same graph. On one column, I have a timestamps in seconds (decimal). For each timestamp value, I have 4 columns associated (Temperature, Pressure, Humidity, Voltage) and I need to visualize how they trend over time. The data in Excel looks something like this (I simplified it for visualization purpose):</p>
  
  <p><a href="https://i.stack.imgur.com/Grt0i.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Grt0i.png" alt="enter image description here"></a></p>
  
  <p>In Excel, it takes me less than seconds to obtain a chart that looks like this:</p>
  
  <p><a href="https://i.stack.imgur.com/R5adg.png" rel="noreferrer"><img src="https://i.stack.imgur.com/R5adg.png" alt="enter image description here"></a></p>
  
  <p>How can I replicate the same exact chart in Tableau? I would like someone to tell me exactly how each column should be formatted, if the data has to be a dimension or a measure and data type for each (string, number etc) and what steps to take in the chart. I would do this in Excel but the file is almost 1M rows and Excel keeps crashing. </p>