Unable to load shared object

General
#1

Hi everyone!
I'm trying to use R for a class. I am using MacOS Mojave 10.14.6 (18G3020).
For R, I installed:

  1. Microsoft Open R version 3.5.1
  2. RStudio
    I also read that I need to download compiler files to run R on my machine
    (https://mac.r-project.org/tools/) so per the link's instructions, I installed:
  3. Xcode
  4. GNU Fortran 8.2
  5. Mandatory Library tools
    -xz utils
    -pcre2
    -(disregarded bzip because my system is 10.14.6 isn't old)

I also installed Xquartz (XQuartz 2.7.11 (xorg-server 1.18.4)) for good measure and made it my default.

For my class, the library I need to load is 'quantmod'. The following happened after I installed it and tried to load the library. It seems like there's a problem with the object files in my library. Any suggestions? Thanks!

install.packages('quantmod')
trying URL 'https://mran.microsoft.com/snapshot/2018-08-01/src/contrib/quantmod_0.4-13.tar.gz'
Content type 'application/octet-stream' length 142084 bytes (138 KB)
==================================================
downloaded 138 KB

  • installing source package ‘quantmod’ ...
    ** package ‘quantmod’ successfully unpacked and MD5 sums checked
    ** R
    ** demo
    ** byte-compile and prepare package for lazy loading
    ** help
    *** installing help indices
    ** building package indices
    ** testing if installed package can be loaded
  • DONE (quantmod)

The downloaded source packages are in
‘/private/var/folders/bm/wg7t4j8j3tz_88yfzyfdkkhm0000gn/T/Rtmp9k8puA/downloaded_packages’

library(quantmod)
Loading required package: TTR
Error: package or namespace load failed for ‘TTR’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5.1-MRO/Resources/library/curl/libs/curl.so':
dlopen(/Library/Frameworks/R.framework/Versions/3.5.1-MRO/Resources/library/curl/libs/curl.so, 6): Library not loaded: /Library/Frameworks/R.framework/Versions/3.5.0-MRO/Resources/lib/libR.dylib
Referenced from: /Library/Frameworks/R.framework/Versions/3.5.1-MRO/Resources/library/curl/libs/curl.so
Reason: image not found
Error: package ‘TTR’ could not be loaded

#2

Try installing the curl package

install.packages("curl")
#3

installed curl that way

tried loading quantmod again and got this....corrupted?:

library(quantmod)
Loading required package: xts
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

as.Date, as.Date.numeric

Loading required package: TTR
Error: package or namespace load failed for ‘TTR’ in get(method, envir = home):
lazy-load database '/Library/Frameworks/R.framework/Versions/3.5.1-MRO/Resources/library/curl/R/curl.rdb' is corrupt
Error: package ‘TTR’ could not be loaded
In addition: Warning message:
In get(method, envir = home) : internal error -3 in R_decompress1

#4

Also, tried to load curl again afterwards to check it and got this:

library(curl)
Error: package or namespace load failed for ‘curl’ in get(method, envir = home):
lazy-load database '/Library/Frameworks/R.framework/Versions/3.5.1-MRO/Resources/library/curl/R/curl.rdb' is corrupt
In addition: Warning messages:
1: In .registerS3method(fin[i, 1], fin[i, 2], fin[i, 3], fin[i, 4], :
restarting interrupted promise evaluation
2: In get(method, envir = home) :
restarting interrupted promise evaluation
3: In get(method, envir = home) : internal error -3 in R_decompress1

#5

I restarted R and I think it cleared a lot up.

library(curl) produced no errors

And then when I invoked library(quantmod), this is what I got. Are the masked objects something to worry about?

library(quantmod)
Loading required package: xts
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

as.Date, as.Date.numeric

Loading required package: TTR
Version 0.4-0 included new data defaults. See ?getSymbols.
Learn from a quantmod author: https://www.datacamp.com/courses/importing-and-managing-financial-data-in-r

#6

Do you get any error message while installing? Have you restarted your R session between installations?

#7

No error messages while installing curl.

I restarted my R session only after I saw the error produced from loading curl via library(curl).
Then after I restarted my R session, I was able to load curl via library(curl) with no problems.

My remaining question is: what do the messages about the objects being masked mean when I load quantmod via library(quantmod)?

#8

It means there are functions from two different packages with the same name

#9

So no problems would arise from this redundancy?

#10

No, as long as you are aware of this, for example, if you want to use the base version of those functions you simply have to reference them explicitly, like this base::as.Date()

#11

This is interesting. I hope to never come across needing to use these because I'm sure I'll forget. I'm happy to be able to use quantmod finally so I can actually learn in class.

Andre, thanks for all your patience in coaching me, the noob!

#12

I'm glad to be of service

If your question's been answered (even by you!), would you mind choosing a solution? It helps other people see which questions still need help, or find solutions if they have similar problems. Here’s how to do it:

1 Like
#13

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.