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Hi all, I have a problem to estimate Std. Error and t-value by ?polr? in library Mass. They result from the summary of a polr object. I can obtain them working in the R environment with the following statements: temp <- polr(formula = formula1, data = data1) coeff <- summary(temp), but when the above statements are enclosed in a function, summary reports the following error:

...' bus='0' port='1.1'/> </hostdev> ------- Any idea on how to handle this case ? We were thinking about using udev, but it seems that libvirt only supports vendor/id (not unique in our case) and bus/device (not predictable) to identify usb devices. Thanks, Maxime Accadia P.S. We use libvirt 4.0.0 on Ubuntu 18.04

On Mon, Feb 03, 2020 at 02:20:47PM +0100, Maxime Accadia wrote: >Hi, > >We have a VM with several USB devices attached. Everything works well, but sometimes, after a reboot of the host, some usb device get a different bus/device number and that prevent the reboot of the VM : > >------- >error: Failed to start domain xxx >error: inter...

...} the function can be called by: temp(Sat ~ Infl + Type + Cont, housing) where all data is available from MASS, as it is an example in R Help on 'polr'. Results are: Re-fitting to get Hessian Error in eval(expr, envir, enclos) : object "dat" not found Paolo Accadia >>> Michael Dewey <info at aghmed.fsnet.co.uk> 20/02/07 13.43 >>> At 15:21 19/02/2007, Paolo Accadia wrote: >Hi all, > >I have a problem to estimate Std. Error and >t-value by ???polr?? in library Mass. >They result from the summary of a polr object. > &...

Hi Maxime, Quoting Maxime Accadia (2020-02-03 14:20:47) > Hi, > > We have a VM with several USB devices attached. Everything works well, > but sometimes, after a reboot of the host, some usb device get a > different bus/device number and that prevent the reboot of the VM : > ... > Any idea on how to handle thi...