Guide to Madagascar programs

sfdd: Convert between different formats.

sfdd < in.rsf > out.rsf trunc=n line=8 ibm=n form= type= format=

string	form=		ascii, native, xdr
string	format=		Element format (for conversion to ASCII)
bool	ibm=n	[y/n]	Special case - assume integers actually represent IBM floats
int	line=8		Number of numbers per line (for conversion to ASCII)
bool	trunc=n	[y/n]	Truncate or round to nearest when converting from float to int/short
string	type=		int, float, complex, short

The sfdd program is used to change either the form (ascii, xdr, native) or the type (complex, float, int, char) of the input dataset.

In the example below, we create a plain text (ASCII) file with numbers and then use sfdd to generate an RSF file in xdr form with complex numbers.

bash$ cat test.txt
1 2 3 4 5 6
bash$ echo n1=6 data_format=ascii_int in=test.txt > test.rsf
bash$ sfin test.rsf
test.rsf:
    in="test.txt"
    esize=0 type=int form=ascii
    n1=6           d1=?           o1=?
        6 elements
bash$ sfdd < test.rsf form=xdr type=complex > test2.rsf
bash$ sfin test2.rsf
test2.rsf:
    in="/tmp/test2.rsf@"
    esize=8 type=complex form=xdr
    n1=3           d1=?           o1=?
        3 elements 24 bytes
bash$ sfdisfil < test2.rsf
   0:          1,         2i         3,         4i         5,         6i

To learn more about the RSF data format, consult the guide to RSF format.

Guide to Madagascar programs