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                 Nernst 
                 
                
                Germany 
                2 Posts  | 
                
                  
                    
                      
                       Posted - 03/07/2019 :  5:02:06 PM
                        
                        
                        
                        
                        
                      
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                       Hello,
  I would like to create a simple but specific kind of plot for my protocol.
  The data originates from protein chromatography and contains: - the uv-absorption of substances/proteins within the solution - usally the Y-Axis,  - the volume that has gone throught the system - in my case the X-Axis,  - and fractioning of specific amounts of volume, starting at a specific moment
  I can easily create a plot containing the first two rows of data. Now I would like to introduce a second X-Axis into the plot, preferably at the top or above the normal (first) X-Axis, showing the fractioning in respect to the first X-Axis, maybe drawling straight lines, creating columns that are called "FractionX".
  I hope the description of what I would like to do is sufficient.
  My question of course is: How do I add a second X-Axis which contains 2 rows of data.
  The data looks like this by the way:
  Column Y1 shows the start of the first fractioning in ml, 50.050, 50.060, et. Column Y2 shows the fraction-name, F1, F2, etc.
  Hope some one can give me a soltuion to this. :) | 
                     
                    
                       Edited by - Nernst on 03/07/2019  5:07:48 PM | 
                     
                   
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                 Echo_Chu 
                 
                
                China 
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                 Nernst 
                 
                
                Germany 
                2 Posts  | 
                
                  
                    
                      
                       Posted - 03/17/2019 :  5:26:26 PM
                        
                        
                        
                        
                        
                      
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                       Thank you for the answer but the solution in the link does not help me.
  To further explain what I need, here is a picture:
 
  
  This image was made with paint where I copy-pasted one axis onto another.
  Have yet to figure how to do that. Does anybody know?
  Again to explain: The upper axis shows fractioning at specific ml-marks, starting around 30ml and going till 60ml, I want those marks to be named as TX to TXX and so on. Cant be that hard, can it?
  Thanks in advance! | 
                     
                    
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                 snowli 
                 
                
                USA 
                1448 Posts  | 
                
                  
                    
                      
                       Posted - 03/20/2019 :  12:12:06 PM
                        
                        
                        
                        
                        
                      
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                       Hello, this issue has been resolved by email.
  Basically add topX layer (2nd layer). On Scale tab, set Major ticks from the column with x values. And then on Tick Labels tab, set Type to be Text from dataset and specify the column with "T.." texts.
  https://www.originlab.com/doc/Quick-Help/Two-groups-X-tick-labels
  Thanks, Snow
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