Hi Everyone,

Could someone please help me. I am new to RStudio and having a lot of problems trying to figure out how to make a simple bar graph like the one I made using excel below (png attached):

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data

# A tibble: 528 x 6

```
...1 Ô..Unique_code Replicate Compound Compound2 Concentration
```

1 1 75-210614_GERYAF1.CDF 1 Geraniol B.Pinene 0.00752

2 2 76-210614_GERYAF2.CDF 2 Geraniol B.Pinene 0.00706

3 3 77-210614_GERYAF3.CDF 3 Geraniol B.Pinene 0.00719

4 4 87-210614_NERYAF1.CDF 1 Nerol B.Pinene 0.00758

5 5 88-210614_NERYAF2.CDF 2 Nerol B.Pinene 0.00775

6 6 89-210614_NERYAF3.CDF 3 Nerol B.Pinene 0.00786

7 7 102-210615_CLOLYAF1.CDF 1 Citronellol B.Pinene 0.00584

8 8 103-210615_CLOLYAF2.CDF 2 Citronellol B.Pinene 0.00816

9 9 104-210615_CLOLYAF3.CDF 3 Citronellol B.Pinene 0.00671

10 10 123-210630_CITYAF1.CDF 1 Citral B.Pinene 0.00816

# … with 518 more rows

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I would like to be able to produce a graph and be specific about which compound 2 is plotted.

Would anyone be able to help?

Thanks

Rebecca