5.1.0 Image Command Examples - Listing
- Start a McIDAS session.
- For McIDAS-X, at the Unix prompt:
Your session should still be set for six frames
from the last time you edited your .mcidasrc file.
If not, set it for six frames, as described in
- Type: mcidas
- Log on and initialize the workstation.
- Type: LOGON initials project I
- List the ADDE groups you have access to on your system.
The names of the groups listed might indicate the type of data contained
in it (ex: RTIMAGES is the group for real-time images).
- If your listing doesn't contain an entry labeled RTIMAGES use
DATALOC to tell McIDAS where to look.
Type: DATALOC ADD RTIMAGES ADDE.UCAR.EDU
- List the image datasets available in the RTIMAGES group
Type: DSINFO IMAGE RTIMAGES
- The IMGLIST
command can be used to list out information on image datasets. By specifying
just the dataset name, you will get information on the latest image in
Type: IMGLIST RTIMAGES/GE-IR
- The position portion of the ADDE dataset can be used to list
out a particular image or several images. A position greater than zero
represents an absolute position in the dataset; a position less than or
equal to zero represents a relative position in the dataset based on
image time, for example, 0 is the most recent and -1 is the next most
recent; the position ALL represents all positions in the dataset list
out all images in the dataset. (Be careful using ALL - there maybe be
several hundred images in a dataset. The DSINFO listing will tell you
how many images are in a particular dataset).
Type: IMGLIST RTIMAGES/GE-IR.ALL
to list all images in the dataset.
Type: IMGLIST RTIMAGES/GE-IR.-1
to list the two most recent images in the dataset.
Type: IMGLIST RTIMAGES/GE-IR.5 10
to list positions 5 through 10 images in the dataset.
- Some McIDAS images can have more than one digital band in them. Use
the FORM=BAND keyword to list out band information with IMGLIST.
For multi-banded images, use the BAND= keyword to list information
about a particular band.
Type: IMGLIST RTIMAGES/GE-IR FORM=BAND
Note that for each band, the resolution at the sub-satellite point and
image size (lines x elements) is displayed.
- The TIME= and DAY= keywords can be used to specify
a particular image or images.