Hi there, I have several saved data files (e.g., A.RData, B.RData and C.RData). In each file, there are some objects with same names but different contents. Now, I need to compare those objects through plotting. However, I can't find a way to load them into a workspace. The only thing I can do is to rename them and then save and load again. Is there a convenient to load those objects? Thanks a lot in advance. Best regards, Jinsong
loading saved files with objects in same names
9 messages · Rolf Turner, William Dunlap, Martin Maechler +3 more
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Mon, Aug 18, 2014 at 5:30 PM, Jinsong Zhao <jszhao at yeah.net> wrote:
Hi there, I have several saved data files (e.g., A.RData, B.RData and C.RData). In each file, there are some objects with same names but different contents. Now, I need to compare those objects through plotting. However, I can't find a way to load them into a workspace. The only thing I can do is to rename them and then save and load again. Is there a convenient to load those objects? Thanks a lot in advance. Best regards, Jinsong
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
On 19/08/14 14:20, William Dunlap wrote:
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Did you mean
plot(envA$object, envB$object)
??? Or am I misunderstanding something?
cheers,
Rolf
Rolf Turner Technical Editor ANZJS
Rolf, Yes, I meant to write envA$object, etc, but did not read it twice before running off to dinner. Thanks. Bill Dunlap TIBCO Software wdunlap tibco.com
On Mon, Aug 18, 2014 at 7:52 PM, Rolf Turner <r.turner at auckland.ac.nz> wrote:
On 19/08/14 14:20, William Dunlap wrote:
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Did you mean
plot(envA$object, envB$object)
??? Or am I misunderstanding something?
cheers,
Rolf
--
Rolf Turner
Technical Editor ANZJS
On 2014/8/18 19:20, William Dunlap wrote:
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Bill Dunlap
TIBCO Software
wdunlap tibco.com
Thank you very much. It is what I want. new.environment() is not defined in R 3.1.1. There is new.env(). Best, Jinsong
On Mon, Aug 18, 2014 at 5:30 PM, Jinsong Zhao <jszhao at yeah.net> wrote:
Hi there, I have several saved data files (e.g., A.RData, B.RData and C.RData). In each file, there are some objects with same names but different contents. Now, I need to compare those objects through plotting. However, I can't find a way to load them into a workspace. The only thing I can do is to rename them and then save and load again. Is there a convenient to load those objects? Thanks a lot in advance. Best regards, Jinsong
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
3 days later
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Bill Dunlap TIBCO Software wdunlap tibco.com
An alternative that I have been advocating is using
attach("A.RData")
etc. It does something similar as the above, but more
conveniently:
It loads the objects into a new environment *and* attaches that
environment to your search() path, so you can access them
directly, but attach() will never accidentally destroy existing
R objects in your global environment ( = search()[[1]] ).
Martin
On Mon, Aug 18, 2014 at 5:30 PM, Jinsong Zhao <jszhao at yeah.net> wrote: Hi there, I have several saved data files (e.g., A.RData, B.RData and C.RData). In each file, there are some objects with same names but different contents. Now, I need to compare those objects through plotting. However, I can't find a way to load them into a workspace. The only thing I can do is to rename them and then save and load again. Is there a convenient to load those objects? Thanks a lot in advance. Best regards, Jinsong
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
On 2014/8/22 1:02, Martin Maechler wrote:
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Bill Dunlap TIBCO Software wdunlap tibco.com
An alternative that I have been advocating is using
attach("A.RData")
etc. It does something similar as the above, but more
conveniently:
It loads the objects into a new environment *and* attaches that
environment to your search() path, so you can access them
directly, but attach() will never accidentally destroy existing
R objects in your global environment ( = search()[[1]] ).
Martin
Thanks a lot.
I try your method, and I got:
> attach("D2.1.RData")
The following objects are masked _by_ .GlobalEnv:
coda.jags.1, df.1, jags.1, Mean, N
In this case, how to access the masked objects?
Best,
Jinsong
On Mon, Aug 18, 2014 at 5:30 PM, Jinsong Zhao <jszhao at yeah.net> wrote: Hi there, I have several saved data files (e.g., A.RData, B.RData and C.RData). In each file, there are some objects with same names but different contents. Now, I need to compare those objects through plotting. However, I can't find a way to load them into a workspace. The only thing I can do is to rename them and then save and load again. Is there a convenient to load those objects? Thanks a lot in advance. Best regards, Jinsong
On 22/08/2014, 1:14 PM, Jinsong Zhao wrote:
On 2014/8/22 1:02, Martin Maechler wrote:
Have you tried the 'envir' argument to load()? E.g.,
envA <- new.environment()
load("A.RData", envir=envA)
envB <- new.environment()
load("B.RData", envir=envB)
plot(A$object, B$object)
Bill Dunlap TIBCO Software wdunlap tibco.com
An alternative that I have been advocating is using
attach("A.RData")
etc. It does something similar as the above, but more
conveniently:
It loads the objects into a new environment *and* attaches that
environment to your search() path, so you can access them
directly, but attach() will never accidentally destroy existing
R objects in your global environment ( = search()[[1]] ).
Martin
Thanks a lot. I try your method, and I got:
> attach("D2.1.RData")
The following objects are masked _by_ .GlobalEnv:
coda.jags.1, df.1, jags.1, Mean, N
In this case, how to access the masked objects?
Don't ever use attach(), and this won't be a problem. Martin gave you bad advice. Duncan Murdoch
1 day later
In the future, you can avoid this problem by using saveRDS and readRDS. Hadley
On Mon, Aug 18, 2014 at 7:30 PM, Jinsong Zhao <jszhao at yeah.net> wrote:
Hi there, I have several saved data files (e.g., A.RData, B.RData and C.RData). In each file, there are some objects with same names but different contents. Now, I need to compare those objects through plotting. However, I can't find a way to load them into a workspace. The only thing I can do is to rename them and then save and load again. Is there a convenient to load those objects? Thanks a lot in advance. Best regards, Jinsong
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.