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Latest Discussions

• how do I compare sensitivity and specificity among several methods?

  Hi allI have data for a reference method and three alternate methods.  I have columns for each of the three alternate methods that, for each row, indicate if the specimen is a true positive (TP), false positive (FP), true negative (TN) or false negative (FN).  I want to evaluate the significance difference between the three methods for sensitivity (TP/(TP+FN)), specificity (TN/(TN+FP)), positive p...

  Maureen

  Discussions |

  Oct 9, 2020 7:38 AM

  5921 views | 5 replies

• looking for a formula

  Hi,I have a column with numbers from 1 to 365 (= date number in a year)  wich is numeric, ordinal.I am looking for a formula to create a new column and transform numbers: add zeros (only to have 3 caracters) like for example:3 => 003,12 => 012,80 => 080, 123, 265 don't change. is there a formula in Jmp to do it? thanks for your help. best regards  

  Françoise

  Discussions |

  Oct 9, 2020 7:20 AM

  3991 views | 5 replies

• What is the correct way to specify a DOE factor that is a discrete numerical variable?

  I was trying to duplicate an analysis in a paper by Christopher Nachtsheim and @bradleyjones called Split-Plot Designs: What, Why, and How, Journal of Quality Technology, Vol. 41, No. 4, October 2009. They use the Box et al data for studying the corrosion resistance of steel bars (attached image). In a split-plot design, Temp is treated as a hard-to-change (whole plot) factor with three levels: 36...

  gchesterton

  Discussions |

  Oct 9, 2020 5:08 AM

  6090 views | 5 replies

• String to number conversion not working

  Hi, I have a regular expression that extracts the Year from a month_year  i.e. "August_2020". However, I haven't been able to find the correct syntax to convert the  character Year "cYear" to number so I can do math with it. I will appreciate any pointers. Thanks!! Names Default To Here( 1 ); SelMonth = {"October_2020"}; cYear = (Regex Match (char(SelMonth), "\d{4}") ); //convert character year...

  ALopez

  Discussions |

  Oct 8, 2020 11:36 PM

  3166 views | 5 replies

• Split Column Based on Text

  Good afternoon.  I am attempting to split one column into three new columns and place a piece of the string from the original column into one of the three new columns based on the context of the text.  I understand that text to columns would parse out the string based on some delimiter, however, this doesn’t quite get me where I need to be.  I need a function that reads the text, checks for certai...

  sagrim

  Discussions |

  Oct 8, 2020 5:47 PM

  4712 views | 5 replies