The format for target files submitted to the ClassX system is currently a little restrictive, but it will be loosened in the future to support other capabilities, such as sexagesimal coordinates.
The current file format is very simple - the file must be a text file, with one target listed per line. Each line must contain the right ascension and declination of the target, in that order, in decimal degrees. The right ascension may be optionally preceded by a target ID string. Fields must be separated by a delimiter string, which by default is one or more white space (spaces or tabs) characters. Leading and trailing white space are permitted on each line. The length of the ID string is arbitrary, but if it contains spaces, a non-whitespace delimiter must be specified. Target ID strings must be supplied for all targets, or none. If target ID strings are not provided, the ClassX pipeline will number targets sequentially in the order they were provided in the target list, beginning with 0.
Below is an example of a valid target file, with no target ID strings provided:
0.0525 1.7725 0.1600 79.6769 0.1771 62.1761 0.3150 70.9265 0.3508 39.6133 0.4329 52.2128 0.7358 71.3686 0.7483 39.9621 1.1771 17.0729 1.2208 34.6596
These targets would be provided the numeric identifiers 0 through 9, since target ID strings were not provided.
Below is an example of a valid target file, with target ID strings provided:
SourceA 0.0525 1.7725 SourceB 0.1600 79.6769 SourceC 0.1771 62.1761 SourceD 0.3150 70.9265 SourceE 0.3508 39.6133 SourceF 0.4329 52.2128 SourceG 0.7358 71.3686 SourceH 0.7483 39.9621 SourceI 1.1771 17.0729 SourceJ 1.2208 34.6596
Below is an example of an invalid target file - the ID strings contain spaces, but no new delimiter was specified:
Source A 0.0525 1.7725 Source B 0.1600 79.6769 Source C 0.1771 62.1761 Source D 0.3150 70.9265 Source E 0.3508 39.6133 Source F 0.4329 52.2128 Source G 0.7358 71.3686 Source H 0.7483 39.9621 Source I 1.1771 17.0729 Source J 1.2208 34.6596
Below is an example of a valid target file - the ID strings contain spaces, but '|' was used as the delimiter:
Source A|0.0525|1.7725 Source B|0.1600|79.6769 Source C|0.1771|62.1761 Source D|0.3150|70.9265 Source E|0.3508|39.6133 Source F|0.4329|52.2128 Source G|0.7358|71.3686 Source H|0.7483|39.9621 Source I|1.1771|17.0729 Source J|1.2208|34.6596
Below is another example of an invalid target file - the ID strings are not uniformly provided:
SourceA 0.0525 1.7725 SourceB 0.1600 79.6769 0.1771 62.1761 0.3150 70.9265 SourceE 0.3508 39.6133 SourceF 0.4329 52.2128 SourceG 0.7358 71.3686 0.7483 39.9621 1.1771 17.0729 1.2208 34.6596
Date of last modification:
Monday, December 01, 2003
Responsible NASA official: Tom
McGlynn
Curator: Eric Winter