Import and plot data from a file with ".dat" format?

[aaronfultineer]

I need to import and data from a .dat file formatted as such:

where the first column is the x coordinate and the second and third columns are y-coordinates for two different lines. How can I import the data and format it in a way that it’s easily graphable? There is too much data to input by hand. Thank you!

[iwilliams (Ian Williams)]

One way to achieve what you want would be as follows.

1. Assuming the data has already been imported in to the notebook as per…

   data = {{1, 1, 1}, {2, 4, 8}, {3, 9, 27}, {4, 16, 64}, {5, 25, 
   125}, {6, 36, 216}, {7, 49, 343}, {8, 64, 512}, {9, 81, 729}, {10,
   100, 1000}};
   

2. Use the ListPlot function as shown below…

   ListPlot[
    data[[All, {1, #}]] & /@ {2, 3}
    , Joined -> True
    , PlotMarkers -> Automatic
    ]
   

3. This generates the 2D x-y graph…

A notebook implementation is attached together with the example data file (CSV format).

Hope this helps,

Ian

Import__AMP__Plot.nb (8.58 KB)
test.csv (92 Bytes)

[aaronfultineer]

Thank you! This is perfect.