ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

14.4. CUBE ANALYSIS 125
14.4 Cube analysis
Figure 14.5: xselect frame window.
14.4.1 Extracting images from cubes with xselect frame
This is a simple widget-based program to interactively allow the user to select a single image
from a given cube – see Figure 14.5. It is invoked as:
CIA> frame=xselect_frame(cvf_pds.image, frame_index)
frame would contain the selected image upon quitting and frame index is the index of the
selected image in the cube.
14.4.2 Extracting images from cubes with xsubcube
xsubcube is similar to xselect frame, though it allows for a subcube of images to be extracted
from a cube rather than just a single image to be extracted. It is a widget-based program with
several parameters that may be interactively selected:
• The top slider specifies the number of frames per packet, whereapacket refers to an image
in the final output subcube. In other words it specifies the number of images in the input
cube to average to produce an image in the output subcube.