Hello at all !
What is the correct form to give a list form R (e.g. list(c(-1,1),
"TestFile") ) to C. I have no problems, if I don't use character and I have
also no problems to give a character vector form R to C. But, if I combine
real and strings in a list then I don't know the correct syntax.
I try it with following (an example):
SEXP writeFile(SEXP headerR){
Image *SaveImage;
PROTECT(headerR = AS_VECTOR(headerR));
SaveImage->Xmin = (float) REAL(VECTOR_ELT(headerR, 0))[0];
SaveImage->Ymin = (float) REAL(VECTOR_ELT(headerR, 0))[1];
strcpy(SaveImage->Description, CHAR(STRING_ELT(headerR, 1)));
}
where
typedef struct {
float Xmin;
float Ymin;
char Description[80];
} Image;
But with this form the characters are doesn't correct (in this case
Description). Perhaps a problem is that I protect the list with AS_VECTOR.
Or is it not possible to comitted a list from R to C that contain numeric
values and characters ?
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