Displaying 2 results from an estimated 2 matches for "az05625".
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3.05625
2011 Nov 02
1
can one modify array in R memory from C++ without copying it?
...ble *mem, int *nr, int *nc){
for(int i=0; i< (*nr)*(*nc); i++)
mem[i]=2*mem[i];
}
}
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I compile it into a shared library using
R CMD SHLIB passptr.cpp
load and run from R as follows
--------------------------------
>dyn.load("/home/az05625/testarma/passptr.so")
>m<-matrix(1:10,nr=2)
>.C("modify", as.double(m), as.integer(2), as.integer(5), DUP=FALSE)
>From reading docs i thought that DUP=FALSE would ensure that R matrix is
not copied and is multiplied by 2 in place. However, it's not the case,
matrix...
2010 Nov 24
1
RJDBC doesn't load Oracle driver?
...JDBC on RedHat Linux and using it successfully with mySQL
JDBC driver i am trying to use it with Oracle database. I use the JDBC
driver that works fine elsewhere (use it in DBVizualizer). However, when i
try to load the driver,
drv<-JDBC("oracle.jdbc.driver.OracleDriver",
"/home/az05625/DBdrivers/ojdbc6.jar", identifier.quote="`")
it gives me error message
Error in .jfindClass(as.character(driverClass)[1]) :
java.lang.UnsupportedClassVersionError: Bad version number in .class file
One would think that this has to do with JRE older than the JDBC driver, but
i...