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hi does anyone know how to create a graph with a logarithmic scale on the "Y" axis? I want to make an enthalpy vs pressure diagram, has anyone already made a Mollier diagram? constant entropy lines are costing me a lot of work. Thanks for your attention PH.sm (215kb) downloaded 17 time(s).
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You can do with the Zedgraph plugin sergio PH_sergio.sm (247kb) downloaded 55 time(s).
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1 user thanked PompelmoTell for this useful post.
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Maxima plug-in should work too.
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Integrated 2D plot should work too. Same can be said for XY-Plot plugin. With a little trick of course. logarithmic_plot.sm (14kb) downloaded 42 time(s).Edited by user 02 May 2021 12:53:21(UTC)
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Originally Posted by: PompelmoTell You can do with the Zedgraph plugin sergio PH_sergio.sm (247kb) downloaded 55 time(s). Sergio, thank you very much for answering The logarithmic scale worked perfectly, however, the lines that it draws are somewhat wavy, as if there is noise and they are separated, is there any way that the line is smoother and more united? Also, when I use ZG, how can I name the lines? I entered all the tempperature and entropy data manually thank you very much for your attention My English is not very good, I hope you can understand me file PH R22.sm (182kb) downloaded 10 time(s).
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Originally Posted by: overlord Integrated 2D plot should work too. Same can be said for XY-Plot plugin. With a little trick of course. logarithmic_plot.sm (14kb) downloaded 42 time(s). Thanks for answering, your method is very helpful. Do you know how I can enter text for the graph lines? I entered all the temperature and entropy values manually, I would like the text to be on the lines or on one side of the line without having to enter them as a text region. thanks for your attention I don't write in English, I hope you understand me PH R22 Q.sm (180kb) downloaded 20 time(s).
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You can view all at once on collected Mollier. PH R22 Q Mollier.sm (62kb) downloaded 24 time(s).
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Originally Posted by: Valentino Thanks for answering, your method is very helpful. Do you know how I can enter text for the graph lines? I entered all the temperature and entropy values manually, I would like the text to be on the lines or on one side of the line without having to enter them as a text region. thanks for your attention I don't write in English, I hope you understand me In 2D-plot and XY-plot there is a method to enter text or some marks into the graph. Don't have any idea if this works with Zed graph. I don't have it and I have no intention to install it. Below you can see a simple demonstrated answer to your question. There is also a lot of detailed information for plotting in Reference book. Regards logarithmic_plot_withtext.sm (33kb) downloaded 43 time(s).
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Originally Posted by: Valentino has anyone already made a Mollier diagram? constant entropy lines are costing me a lot of work. Thanks for your attention
An horrible task for the first model from you data. The principle is quite involved but works. M8, M9, M10 do NOT cinterp ... confirmed MathcadQuadratic acceptable M9 ... M8 poor ... M10 OK More work to conclude is needed ... as is reconciliation. the FREAK is not done Cheers ... Jean Project Mollier IDX part.sm (164kb) downloaded 19 time(s).The all difficulty results from poor/unwisely collected data.
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