topic Re: Is there a function in SAS that applies a Lambert W transformation to data? in SAS Programming https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/299126#M267703 <P>You can <A href="http://blogs.sas.com/content/iml/2016/08/31/lambert-w-function-sas.html" target="_self">download a SAS/IML implementation of the Lambert W function.</A> The function has two branches, so yo uneed to know which branch to use.</P> Sat, 17 Sep 2016 23:46:16 GMT Rick_SAS 2016-09-17T23:46:16Z Is there a function in SAS that applies a Lambert W transformation to data? https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/216192#M267700 <HTML><HEAD></HEAD><BODY><P>There are a few transformations that can be useful in compressing the tails of extreme valued data. One is the inverse hyperbolic sine, for which there is a SAS function. Another is Lambert's W, <A href="http://mathworld.wolfram.com/LambertW-Function.html" title="http://mathworld.wolfram.com/LambertW-Function.html">Lambert W-Function -- from Wolfram MathWorld</A></P><P></P><P>R has a function for this transformation. In searching for it on SAS Support, it looked like the OR Reliability module might have some Gumbel-type proxy for it...but I couldn't find an explicit statement or confirmation of the existence of a function.</P><P></P><P>Anybody know if a Lambert's W function, and it's inverse, exists in SAS?</P></BODY></HTML> Sat, 04 Apr 2015 16:16:18 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/216192#M267700 xtc283x 2015-04-04T16:16:18Z Re: Is there a function in SAS that applies a Lambert W transformation to data? https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/216193#M267701 <HTML><HEAD></HEAD><BODY><P>Try to post it at <A _jive_internal="true" data-containerid="2007" data-containertype="14" data-objectid="47" data-objecttype="14" href="https://communities.sas.com/community/support-communities/sas_iml_and_sas_iml_studio" style="color: #0e66ba; background-color: #f0f8fb;">SAS/IML Software and Matrix Computations</A></P><P>Rick might have some idea.</P></BODY></HTML> Sun, 05 Apr 2015 09:41:25 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/216193#M267701 Ksharp 2015-04-05T09:41:25Z Re: Is there a function in SAS that applies a Lambert W transformation to data? https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/216194#M267702 <HTML><HEAD></HEAD><BODY><P>Thank you...I think I got the answer I needed to hear, just not the answer I wanted to hear...</P></BODY></HTML> Sun, 05 Apr 2015 09:46:31 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/216194#M267702 xtc283x 2015-04-05T09:46:31Z Re: Is there a function in SAS that applies a Lambert W transformation to data? https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/299126#M267703 <P>You can <A href="http://blogs.sas.com/content/iml/2016/08/31/lambert-w-function-sas.html" target="_self">download a SAS/IML implementation of the Lambert W function.</A> The function has two branches, so yo uneed to know which branch to use.</P> Sat, 17 Sep 2016 23:46:16 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/299126#M267703 Rick_SAS 2016-09-17T23:46:16Z Re: Is there a function in SAS that applies a Lambert W transformation to data? https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/429944#M267704 <P>SAS/IML 14.3 (released with SAS 9.4M5) contains a built-in<A href="http://bit.ly/2hmdCVu" target="_self"> implementation of the Lambert W function.</A></P> Tue, 23 Jan 2018 11:12:35 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-function-in-SAS-that-applies-a-Lambert-W/m-p/429944#M267704 Rick_SAS 2018-01-23T11:12:35Z