R wordcloud 한글 깨짐

https://appree.tistory.com/36

R 한글 인코딩 문제

Sys.setlocale("LC_CTYPE", "ko_KR.UTF-8");




txt <- readLines(file("file.txt", encoding = "EUC-KR"))




RSQLite install.pacakges로 설치 오류 날때

1. 아래 주소에서 바이너리 압축파일을 받는다.
https://cran.r-project.org/web/packages/RSQLite/index.html

2. 다운로드 받은 압축파일이 있는 경로에서 커맨트 창에 아래 명령어를 실행한다.

R CMD INSTALL RSQLite_2.1.1.tgz

3. R Studio에서 Load한다.
library(RSQLite)

'Error : .onLoad failed in loadNamespace() for 'rJava'

 user@userui-MacBook-Pro  /usr/bin  sudo R CMD javareconf

Password:

Java interpreter : /usr/bin/java

Java version     : 12.0.2

Java home path   : /Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk/Contents/Home

Java compiler    : /usr/bin/javac

Java headers gen.: /usr/bin/javah

Java archive tool: /usr/bin/jar

trying to compile and link a JNI program 

detected JNI cpp flags    : -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/darwin

detected JNI linker flags : -L$(JAVA_HOME)/lib/server -ljvm

clang -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk/Contents/Home/include/darwin  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/usr/local/include  -fPIC  -Wall -g -O2  -c conftest.c -o conftest.o

clang -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o conftest.so conftest.o -L/Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk/Contents/Home/lib/server -ljvm -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation

JAVA_HOME        : /Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk/Contents/Home

Java library path: $(JAVA_HOME)/lib/server

JNI cpp flags    : -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/darwin

JNI linker flags : -L$(JAVA_HOME)/lib/server -ljvm

Updating Java configuration in /Library/Frameworks/R.framework/Resources

Done.

R studio에서
> Sys.setenv(JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk/Contents/Home/")

Background Tasks in Objective C

https://stackoverflow.com/questions/8861390/ios-background-downloads-when-the-app-is-not-active

Ubuntu Oracle JDK 12 install with deb file

https://websiteforstudents.com/manually-install-oracle-java-jdk-12-on-ubuntu-18-04-16-04/

Jypyter notebook Kernel died

The kernel appears to have died. It will restart automatically.

pip install --upgrade numpy