Dear R heleprs
 
Suppose I have following data
 








Scenarios
combination_names
    series1
   series2

Sc1
MAT2 GAU1
7.26554
8.409778

Sc2
MAT2 GAU2
7.438128
8.130275

Sc3
MAT3 GAU1
8.058422
8.06457

Sc4
MAT1 GAU2
8.179855
8.022071

Sc5
MAT3 GAU2
8.184033
8.191831

Sc6
MAT3 GAU2
7.50312
8.232425

Sc7
MAT1 GAU2
7.603291
8.200993

Sc8
MAT1 GAU1
8.221755
8.380097

Sc9
MAT3 GAU2
7.904908
8.088824

Sc10
MAT1 GAU3
7.67034
8.46376
 
 
I wish to sort thise data frame based on combination_names. Actually this is just an indicative data. I am deling with the data haveing 5000+ records.
 
I just need to find out how to sort this data s.t, I will get say following result
 




Scenarios
combination_names
    series1
   series2




Sc8
           MAT1 GAU1
8.221755
8.380097




Sc4
           MAT1 GAU2
8.179855
8.022071








Sc7
           MAT1 GAU2
7.603291
8.200993
Sc10           MAT1 GAU3             7.67034      8.46376 
        


 
........ and so
 
I tried to understand the examples given in 
?base::order but couldn't cracke it.
 
Please guide
 
Madhavi
 


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