17.7 FIND

[DISPLAY\]FIND Fmin Fmax [/SPECIES Name]

Select spectral lines in the range Fmin to Fmax (in MHz) and return them in the LINES% structure.

LINES%SPECIES contains the name of the species for each line. LINES%FREQUENCY holds its frequency in MHz. LINES%LINES contains the full line names, including the transition. LINES%PLOT contains the string to be used in graphic display, with codes for superscripts and subscrips when needed.

The sign of LINES%N encodes the number of selected lines and type of catalog which was used.

The rest of the structure depends on the catalog type.

If the catalog is in the ASTRO format, LINES%N is negative and contains the opposite of the number of lines.

If the catalog is in the LINEDB format (see HELP LINEDB\ for details), LINE%N is positive and contains the number of selected lines. Quantum numbers, energy levels and line strengths are also available in this case, allowing a more precise selection.