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Latest Discussions

• Stability analysis on pH

  Hello, I am running a stability study on several lots of a buffer solution based on the measured pH over time. I noticed that the stability analysis in JMP fits the data to a linear degradation model. Is this appropriate to use for a pH analysis since the pH scale follows a log base 10 relationship?Would it be more appropriate to first convert the values to [H3O+] concentration? (Or, is there an a...

  camhilker

  Discussions |

  Aug 6, 2021 4:09 PM

  1276 views | 2 replies

• How do I identify what region a randomly generated point falls in on a map?

  I posted this question already on stackoverflow but was pointed to the community since it is more likely to get an answer. There is also a picture representation of what my problem entails. Essentially, I have a "map" that consists of several rectangular regions. I have access to the coordinates of all the vertices of each rectangular region (their x_min, x_max, y_min, y_max). I randomly generate ...

  HassanTahan

  Discussions |

  Aug 5, 2021 1:46 PM

  2489 views | 6 replies

• Lack of fit for a custom DoE design with hard to change factors

  When I use Minitab to build a DoE model with two hard to change factors, I can see Lack of fit evaluation as long as I replicate both whole plot and subplot (Minitab gives me an option to replicate the whole plot and subplot during the design of the model) However, when I use JMP Custom DoE platform, for the same set of factors with two HTC factors, I am not able to see the lack of fit analysis no...

  JMP38401

  Discussions |

  Aug 5, 2021 1:24 PM

  2572 views | 6 replies

• ellipsometry trajectories

  Has anyone ever created an ellipsometric trajectory for del, psi, wavelength, n, k, and/or thickness on JMP? Thanks!

  LR237787

  Discussions |

  Aug 5, 2021 9:44 AM

  1078 views | 2 replies

• Ordinal logistic regression

  I am using JMP (Fit Model) to do a ordinal logistic regression.Now I am looking for a way to do a test the assumption that "proportional odds" are involved in my model.Does anyone know how to do this? Or is there a possibiltity that JMP does this kind of test (also referred to as "Approximate likelihood-ratio test of proportionality of odds" or "Brant Test of Parallel Regression Assumption" or "sc...

  Ina123

  Discussions |

  Aug 5, 2021 7:20 AM

  1736 views | 1 replies