Error(s) in re-building vignettes:
  ...
--- re-building 'oc.Rnw' using Sweave
Loading required package: pscl
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis

## Optimal Classification Ideal Point Package
## Copyright 2007 -2021
## Keith Poole, Jeffrey Lewis, James Lo, and Royce Carroll
## Support provided by the U.S. National Science Foundation
## NSF Grant SES-0611974


Error: processing vignette 'oc.Rnw' failed with diagnostics:
 chunk 5 (label = four) 
Error in axis(2, at = yt, ...) : 
  formal argument "at" matched by multiple actual arguments

--- failed re-building 'oc.Rnw'

SUMMARY: processing the following file failed:
  'oc.Rnw'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
  ...
--- re-building ‘oc.Rnw’ using Sweave
Loading required package: pscl
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis

## Optimal Classification Ideal Point Package
## Copyright 2007 -2021
## Keith Poole, Jeffrey Lewis, James Lo, and Royce Carroll
## Support provided by the U.S. National Science Foundation
## NSF Grant SES-0611974


Error: processing vignette ‘oc.Rnw’ failed with diagnostics:
 chunk 5 (label = four) 
Error in axis(2, at = yt, ...) : 
  formal argument "at" matched by multiple actual arguments

--- failed re-building ‘oc.Rnw’

SUMMARY: processing the following file failed:
  ‘oc.Rnw’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘oc.Rnw’ using Sweave
Loading required package: pscl
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis

## Optimal Classification Ideal Point Package
## Copyright 2007 -2021
## Keith Poole, Jeffrey Lewis, James Lo, and Royce Carroll
## Support provided by the U.S. National Science Foundation
## NSF Grant SES-0611974


Error: processing vignette 'oc.Rnw' failed with diagnostics:
 chunk 5 (label = four) 
Error in axis(2, at = yt, ...) : 
  formal argument "at" matched by multiple actual arguments

--- failed re-building ‘oc.Rnw’

SUMMARY: processing the following file failed:
  ‘oc.Rnw’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘oc.Rnw’ using Sweave
Loading required package: pscl
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis

## Optimal Classification Ideal Point Package
## Copyright 2007 -2021
## Keith Poole, Jeffrey Lewis, James Lo, and Royce Carroll
## Support provided by the U.S. National Science Foundation
## NSF Grant SES-0611974


Error: processing vignette 'oc.Rnw' failed with diagnostics:
 chunk 5 (label = four) 
Error in axis(2, at = yt, ...) : 
  formal argument "at" matched by multiple actual arguments

--- failed re-building ‘oc.Rnw’

SUMMARY: processing the following file failed:
  ‘oc.Rnw’

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'oc.Rnw' using Sweave
Loading required package: pscl
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis

## Optimal Classification Ideal Point Package
## Copyright 2007 -2021
## Keith Poole, Jeffrey Lewis, James Lo, and Royce Carroll
## Support provided by the U.S. National Science Foundation
## NSF Grant SES-0611974


Error: processing vignette 'oc.Rnw' failed with diagnostics:
 chunk 5 (label = four) 
Error in axis(2, at = yt, ...) : 
  formal argument "at" matched by multiple actual arguments

--- failed re-building 'oc.Rnw'

SUMMARY: processing the following file failed:
  'oc.Rnw'

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building 'oc.Rnw' using Sweave
Loading required package: pscl
Classes and Methods for R developed in the
Political Science Computational Laboratory
Department of Political Science
Stanford University
Simon Jackman
hurdle and zeroinfl functions by Achim Zeileis

## Optimal Classification Ideal Point Package
## Copyright 2007 -2021
## Keith Poole, Jeffrey Lewis, James Lo, and Royce Carroll
## Support provided by the U.S. National Science Foundation
## NSF Grant SES-0611974


Error: processing vignette 'oc.Rnw' failed with diagnostics:
 chunk 5 (label = four) 
Error in axis(2, at = yt, ...) : 
  formal argument "at" matched by multiple actual arguments

--- failed re-building 'oc.Rnw'

SUMMARY: processing the following file failed:
  'oc.Rnw'

Error: Vignette re-building failed.
Execution halted