How To Install saoimage on CentOS 7
Introduction
In this tutorial we learn how to install saoimage on CentOS 7.
What is saoimage
SAOimage (pronounced S-A-0-image) is a utility for displaying astronomical images in the X11 window environment. It was written at the Smithsonian Astrophysical Observatory by Mike Van Hilst in 1990 and is now maintained by Doug Mink. Image files can be read directly, or image data may be passed through a named pipe (Unix) or a mailbox (VMS) from IRAF display tasks. SAOimage provides a large selection of options for zooming, panning, scaling, coloring, pixel readback, display blinking, and region specification. User interactions are generally performed with the mouse. Mouse tracking in an image’s world coordinate system, usually sky coordinates, was added in 1994. You can also plot catalogs over images with WCS information in their headers. The SAOimage desktop includes, a main image display window, a button menu panel, a display magnifier, a pan and zoom reference image, and a color bar. A color table graph window can be brought up by clicking on the color bar.
We can use yum or dnf to install saoimage on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install saoimage.
Install saoimage on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install saoimage using yum by running the following command:
sudo yum -y install saoimage
Install saoimage on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install saoimage using dnf by running the following command:
sudo dnf -y install saoimage
How To Uninstall saoimage on CentOS 7
To uninstall only the saoimage package we can use the following command:
sudo dnf remove saoimage
References
Summary
In this tutorial we learn how to install saoimage on CentOS 7 using yum and dnf.
