Application Automatically Picks up the Wrong NDF

Some applications read the name of the NDF  used to create a plot or image from the graphics database in order to save typing. Once in a while you'll say ``that's not the one I wanted''. This is because AGI finds the last DATA picture situated within the current picture. Abort the application via !!, then use PICCUR or PICLIST to select the required FRAME picture enclosing the DATA picture, or even select the latter directly. You can override the AGI NDF also by specifying the required NDF on the command line, provided it has pixels whose indices lies within the world co-ordinates of the DATA picture. Thus

     % inspect myndf

will inspect the NDF called myndf. The command PICIN will show the last DATA picture and its associated NDF.