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Latest Discussions

• How to append data to a file without opening it?

  I need to append new data to a file on a weekly basis.  Is there a way for me to do so without opening/loading the file in JMP script? dt = open("my.csv"); dt<< Concatenate(Data Table ("New data") , append to first table); dt << Save("my.csv", Replace(1));  Thanks!

  Dawn_Lun

  Discussions |

  Mar 1, 2021 4:08 AM

  3245 views | 2 replies

• k-NN visualization in JMP

  Hi folks, Longtime JMP Pro user here but fairly new to working with the k-Nearest Neighbors classification module.  I'm working with a visible reflectance spectroscopy data set for a geological material classification (two-class) problem.  I have a fairly well-optimized k-NN model at this point with a low misclassification rate on my test set.  So far, so good.  However, I am looking for a way to ...

  redrock

  Discussions |

  Mar 1, 2021 4:00 AM

  2987 views | 3 replies

• Looking for a sample size calculator for defect proportions that can help me optimize the sample size with a minimum proportion to detect and the CIs for computed proportions.

  Use case: 35,000 defects detected by a machine on one wafer. An operator samples 1500 images and sorts them into 10 categories. The percentages of the defect categories are meant to reflect the defects in the population of 35,000. In this case 1500 images were used but what happens when the 5000 images are used? What does that do to the confidence intervals on the proportions. As the sampling gets...

  students_t

  Discussions |

  Feb 27, 2021 12:38 PM

  5159 views | 4 replies

• How is JMP STD error for means and STD error for Mean difference calculated? I wish validate the numbers I get in Excel with JMP

  How does JMP calculate the Std Error of means and Std Error of Diff in the LS means Table and LS Means Differences Student's t. I tried to replicate the results by STD error calculated from both Standard deviation of sample and population,but the values do not match. Please refer the document attached, I calculated the  STD errors from the values in 4 groups as well as theSTD error of the 4 means ...

  samjoshva

  Discussions |

  Feb 27, 2021 12:36 PM

  7243 views | 5 replies

• 4PL fit failure

  I am trying to get to the bottom of an odd observation when trying to fit data using a 4PL. In short, when I fit my data I end up with a flat line:  If I do any of the following I end up with a more proper looking fit, and I am sure that other minor changes to the numbers themselves may also fix this bug:Change 0.08 to 0.0800000001Change 26042 to 26043Invert the way the data is within the table (w...

  P_Desmond

  Discussions |

  Feb 27, 2021 8:45 AM

  2659 views | 3 replies