Making maps

Map files (`datacubes' to the initiated) consist of a potentially large number of related spectra in one place under a common header. The spectra are taken on a regular spatial grid of points. This, and a few other things, you must tell SPECX before anything else. First create a map file with

$\gt\!\gt$ o-map

Give it a name (whatever name you give is automatically appended with the string _map.sdf), tell the system the grid spacing of the observations, and a few other things (answer the questions). Be sure to set the map size to be adequate for your needs, or else you will have to recreate it later. Only one map file may be open at one time.

To place the current spectrum in the map file, use the add-to-map command:

$\gt\!\gt$ a-t-m

To overwrite an existing spectrum in the map, first use

$\gt\!\gt$ s-m-a

to set map access (or not, as the case may be).