Description Usage Arguments Value Examples
Call and reset a Macaulay2 process
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | 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)
## S3 method for class 'm2_pointer'
print(x, ...)
|
port |
port for Macaulay2 socket |
timeout |
number of seconds before aborting |
attempts |
numer of times to try to make connection |
cloud |
use a cloud? |
hostname |
the remote host to connect to; defaults to the Amazon EC2 instance |
code |
Macaulay2 code |
x |
formal argument for print method |
... |
... |
m2 return value
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | ## Not run: 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}")
## End(Not run)
|
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