Graphic Cursor Commands

In some of the analysis programs in MIDAS the graphic cursor is a powerful tool. For example, using the cursor one can retrieve wavelengths and line intensities in a plotted spectrum, integration of emission or absorption lines over a wavelength range selected by the cursor, compute the line width and center, etc. With the general GET/GCURSOR command the user can retrieve information from plotted data and store this in a table. Listed below are some of the core and application commands which use cursor interaction. Many additional graphics commands, including those that use cursor interaction, are available in the various contexts, e.g. SPEC and ECHELLE.

GET/GCURSOR	read coordinates from graphics screen
CENTER/GAUSS	computes center of a 1-dim. or 2-dim. feature
MODIFY/GCURSOR	change data line of an image interactively
INTEGRATE/APERTURE	compute flux inside an aperture
INTEGRATE/LINE	integrate row of a frame using the cursor
INTEGRATE/STAR	compute flux, radius and background of stars