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ssavarmand
USA
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 Posted - 10/24/2014 : 08:15:43 AM
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Hello,
I am a beginner in using Origin. I was wondering if there is a way to plot the tie lines in a vapor-liquid ternary phase diagram.
If not, the only other way that comes to my mind is to find a way to mark the data points on the worksheet so they show up as marked in the plot and then I manually draw lines between each two corresponding points (one point representing the vapor phase and one other point representing the liquid phase)on the plot. Although this would be a painful, time consuming way.
Would appreciate any thoughts.
Cheers |
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SeanMao
China
288 Posts |
Posted - 10/26/2014 : 11:41:15 PM
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Hi,
To do so, you just need to double click on the ternary graph to bring up Plot Details dialog and change Plot Type on the bottom left to be Line + Symbol.
For you reference, I made a simple ternary graph as shown below:
Is this ternary graph what you want?
Regards!
Sean
OriginLab Technical Service |
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ssavarmand
USA
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Posted - 10/30/2014 : 08:46:47 AM
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Hi Sean,
Thanks for taking the time and replied to my question.
I think I can explain better with the following graph. This is a phase diagram. As you can see, each two points, one from different phases, are connected by a line that is called a tie line.
Now imagine a file of all these data where in each row of the spreadsheet you have the coordinates of two points, one in phase 1 and the other one in phase 2. The question is how to plot all these multiple lines where each line passes two data points only.
Thanks in advance.
Link to the image: http://goo.gl/1Kam2O
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SeanMao
China
288 Posts |
Posted - 10/30/2014 : 10:17:31 PM
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Hi,
Please see the attached figure for instructions to make the tie lines:
Regards!
Sean |
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SeanMao
China
288 Posts |
Posted - 10/30/2014 : 10:34:48 PM
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Hi,
If your data pairs are arranged in rows, you can use Worksheet:Stack Columns feature to stack your data into the way shown above. On the Options node in wstackcol dialog, set Stack into Subgroups as 3 and check Stack by Rows column.
Regards!
Sean |
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ssavarmand
USA
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Posted - 10/31/2014 : 09:00:29 AM
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Hi Sean,
Thank you very much for your answer. It worked very well. I needed to stack my column by row. Since in ternary plots each point has three coordinates, I needed to do the stacking process three time, each for one coordinate. Then I copied the new columns in a new worksheet. That way I could add the lines using the 2-point segment technique that you showed. All worked out. Awesome!
Regards,
Saeid |
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kuhess
USA
2 Posts |
Posted - 12/18/2017 : 10:08:09 AM
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Dear Saeid,
were you able to draw Binodal and Spinodal curves in Origin?
If so can you share the codes for a ternary phase diagrams?
Best regards,
Mohd |
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tie lines in vapor-liquid ternary phase diagram