Lambert W function with negative branch in R?

03 March 2013 1 862 Report

How can one generate a negative branch of the Lambert W function R? I found the following helpful: http://rss.acs.unt.edu/Rdoc/library/gsl/html/Lambert.html

but it is only for positive side.

Ross Boczar

Looking at the header file gsl_sf_lamber.h, the second function in the link you provided,

lambert_Wm1(x, give=FALSE,strict=TRUE)

is the second branch.

Badges
Science topic

More Sajid Ali's questions See All

What kind of data is usually considered in Construction of Shewhart control charts?

What kind of data is usually considered for Shewhart charts i.e. cross-sectional data or longitudinal data. Because, if it is longitudinal data then usual techniques are no longer valid. A common...

08 September 2013 6,878 2 View

Difference between distribution and Process?

Currently I am reading about stochastic processes. I cannot understand how one can extend distribution to a process (like a particular example is Poisson distribution and Process). But can we...

02 March 2013 1,916 9 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View