IU Molecular Visualization Facility. Statistical Software. SAL. You can use software packages in this section for scientific data processing and visualization. These packages are usually end user programs as opposed to software libraries . These packages have a shorter learning curve and are more user friendly. But, they may not be as flexible as a software library that you can link with your code. ACE/gr (xmgr, xvgr) -- general 2D XY plotting package with mouse control. AIPS -- calibration, data analysis, image display, plotting on astronomical data. Visualisation et postraitement.