| setdata | Put data values according to indexes into a data field |
| -f <fldname> | field to be modified |
| -vals <index> = <value> ...; | index - value pairs |
| [-len <len>] | length of the field to be created |
| [-t <type>] | type of the field to be created |
This command places specified data values according to indexes into a specified data field. The values are given as index - value pairs. If a field does not exist, then the parameters <len> and <type> must be given. The type is specified with one of the strings int, float or string. Note, that a strong conversion is used. This means that if an integer is given for a string field, the value is handled as a string, and the same holds for all other data types. Vector elements, whose value is not specified, receive a zero or empty value.
Example: In the following examples, the range (min/max) is computed using fldstat (see section 4.5) into frame minmax. The first field contains the minimum and the second field the maximum values for each original field. Therefore, index 0 of frame minmax refers to the first field in the source data (boston.criminality). Thus, the operation setdata forces the minimum value for criminality to 5 and maximum to 50.
NDA> load boston.dat NDA> fldstat -d boston -dout minmax -min -max NDA> ls -fr minmax minmax.min minmax.max NDA> setdata -f minmax.min -vals 0=5; NDA> setdata -f minmax.max -vals 0=50;