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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/m2.R
\name{m2_call}
\alias{m2_call}
\alias{m2r_version_number}
\alias{m2r_cloud_url}
\alias{has_m2_connection}
\alias{start_m2}
\alias{stop_m2}
\alias{reset_m2}
\alias{m2}
\alias{m2.}
\alias{print.m2_pointer}
\title{Call and reset a Macaulay2 process}
\usage{
m2r_version_number()
m2r_cloud_url()
has_m2_connection()
start_m2(
port = 27436L,
timeout = 10,
attempts = 10,
cloud = FALSE,
hostname = m2r_cloud_url()
)
stop_m2()
reset_m2(
port = 27436L,
timeout = 10,
attempts = 10,
hostname = "ec2-52-10-66-241.us-west-2.compute.amazonaws.com"
)
m2(code, timeout = -1)
m2.(code, timeout = -1)
\method{print}{m2_pointer}(x, ...)
}
\arguments{
\item{port}{port for Macaulay2 socket}
\item{timeout}{number of seconds before aborting}
\item{attempts}{numer of times to try to make connection}
\item{cloud}{use a cloud?}
\item{hostname}{the remote host to connect to; defaults to the Amazon EC2
instance}
\item{code}{Macaulay2 code}
\item{x}{formal argument for print method}
\item{...}{...}
}
\value{
m2 return value
}
\description{
Call and reset a Macaulay2 process
}
\examples{
\dontrun{ requires Macaulay2
m2("1 + 1")
m2.("1 + 1")
m2("factor 32004")
# run a chunk of m2 code, only pulling the end value back into R
m2("
R = QQ[a..d]
I = ideal(a^3-b^2*c, b*c^2-c*d^2, c^3)
G = gens gb I
")
# illustrate the persistent connection
m2("a = 1 + 1")
m2("a")
reset_m2()
m2("a")
# forcing a cloud start
if(has_m2_connection()) stop_m2()
start_m2(cloud = TRUE)
m2("1 + 1")
stop_m2()
m2.("peek(QQ[x,y,z])")
m2("peek(QQ[x,y,z])")
# m2 returns in its ext_str position the result of running
# toExternalString on the return value of the chunk of code
# you run. in principle, toExternalString provides the code
# needed to recreate the m2 object of interest. however,
# does not work for all objects representable in the m2 language.
# in particular, mutable objects are not supported.
# this is what happens when you look at those:
m2.("new MutableList from {1,2,3}")
m2("new MutableList from {1,2,3}")
}
}
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