Running catselect

To run catselect simply type:

catselect

The amount of textual information written to the output catalogue is controlled using the command line mechanism described in Section . You must answer a series of prompts in order to generate a catalogue containing the required selection. Some of these prompts differ depending on the type of selection required, but the first few are always the same. These first few prompts are listed below together with a corresponding explanation. In this list the prompts are identified by the corresponding ADAM parameter name, which appears at the start of the prompt line.

CATIN

Enter the name of the input catalogue from which objects are to be selected.

CATOUT

Enter the name of the output catalogue to contain the selected objects. A catalogue with this name must not already exist. catselect will automatically create the output catalogue in toto.

REJCAT

Specify whether a second output catalogue, containing the objects which did not satisfy the selection criteria, is to be created. The options are:

TRUE

produce a catalogue of rejected objects,

FALSE

(default) do not produce a catalogue of rejected objects.

CATREJ

Enter the name of the output catalogue to contain the rejected objects. Obviously, this prompt is issued only if you specified that such a catalogue was required by replying ` TRUE' to the REJCAT prompt. A catalogue with the specified name must not already exist. catselect will automatically create the output catalogue in toto.

SELTYP

Specify the type of selection required. The options are:

E

arbitrary expression,

R

range within a sorted column,

A

rectangular area,

C

circular area,

P

polygonal area,

N

every nth entry,

H

list the options available.

See Section  for a description of the options. You will be re-prompted until a valid option is given. Similarly, you will be reprompted after giving option `H'.

The remaining prompts vary, depending on the type of selection which is being performed. They are discussed with the corresponding type of selection in Section .