我无法在macOS Sierra上安装R上的pracma软件包。
为什么会这样？
R version 3.4.1 (2017-06-30) -- "Single Candle"
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> install.packages('pracma')
--- Please select a CRAN mirror for use in this session ---
Secure CRAN mirrors
1: 0-Cloud [https] 2: Algeria [https]
3: Australia (Canberra) [https] 4: Australia (Melbourne 1) [https]
5: Australia (Melbourne 2) [https] 6: Australia (Perth) [https]
7: Austria [https] 8: Belgium (Ghent) [https]
9: Brazil (RJ) [https] 10: Brazil (SP 1) [https]
11: Bulgaria [https] 12: Chile 1 [https]
13: China (Lanzhou) [https] 14: Colombia (Cali) [https]
15: Czech Republic [https] 16: Denmark [https]
17: Estonia [https] 18: France (Lyon 1) [https]
19: France (Lyon 2) [https] 20: France (Marseille) [https]
21: France (Montpellier) [https] 22: France (Paris 2) [https]
23: Germany (Göttingen) [https] 24: Germany (Münster) [https]
25: Greece [https] 26: Iceland [https]
27: Indonesia (Jakarta) [https] 28: Ireland [https]
29: Italy (Padua) [https] 30: Japan (Tokyo) [https]
31: Malaysia [https] 32: Mexico (Mexico City) [https]
33: Norway [https] 34: Philippines [https]
35: Serbia [https] 36: Spain (A Coruña) [https]
37: Spain (Madrid) [https] 38: Sweden [https]
39: Switzerland [https] 40: Turkey (Denizli) [https]
41: Turkey (Mersin) [https] 42: UK (Bristol) [https]
43: UK (Cambridge) [https] 44: UK (London 1) [https]
45: USA (CA 1) [https] 46: USA (IA) [https]
47: USA (KS) [https] 48: USA (MI 1) [https]
49: USA (OR) [https] 50: USA (TN) [https]
51: USA (TX 1) [https] 52: Vietnam [https]
53: (other mirrors)
Selection: 45
trying URL 'https://cran.cnr.berkeley.edu/bin/macosx/el-capitan/contrib/3.4/pracma_2.0.7.tgz'
Content type 'application/x-gzip' length 1088304 bytes (1.0 MB)
==================================================
downloaded 1.0 MB
The downloaded binary packages are in
/var/folders/96/q59q0w591_z1b1g7zqcby3p80000gn/T//RtmprmmdzT/downloaded_packages
Warning message:
In doTryCatch(return(expr), name, parentenv, handler) :
unable to load shared object '/Library/Frameworks/R.framework/Resources/modules//R_X11.so':
dlopen(/Library/Frameworks/R.framework/Resources/modules//R_X11.so, 6): Library not loaded: /opt/X11/lib/libSM.6.dylib
Referenced from: /Library/Frameworks/R.framework/Resources/modules//R_X11.so
Reason: image not found
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