Install the Java run-time environment (JRE) on a local computer. We recommend JRE_8.
Download ISOViz.jar file to a convenient location and possibly place a shortcut on your Desktop. These instructions assume you selected C:\Users\youruser\.isoviz\ISOViz.jar, though you can adapt them to other file locations.
If .jar files are not automatically associated with the JRE on your computer, invoke this file association using an established method. For example, you could (1) right-click on the ISOViz.jar file to open the contextual menu, (2) choose "Open with", (3) select "Choose another app", (4) select "Choose an app on your PC", (5) navigate to the JRE, and (5) Choose "Always" rather than "Just Once".
Double-click the JAR file or its shortcut to open the Java app. Drag local ISOVIZ or ISODISTORT-distortion files into the app window.
'java -jre C:\Users\youruser\.isoviz\ISOViz.jar' to open the app without a data file.
'java -jre C:\Users\youruser\.isoviz\ISOViz.jar \yourpath\yourdata.isoviz' to load an isoviz file.
Create CMD script at C:\Users\youruser\.isoviz\isoviz-launcher.cmd with the following contents.    @echo off    set FILE=%1    java -jar "C:\Users\youruser\.isoviz\ISOViz.jar" "%FILE%"
Type the following commands in a cmd window to obtain a persistent file association.    assoc .myext=ISOVIZfile    ftype ISOVIZfile="C:\Users\youruser\.isoviz\isoviz-launcher.cmd" "%1"
Type the following commands to verify the outcome:    assoc .myext    ftype ISOVIZfile
To remove the association if necessary:    assoc .myext=    ftype ISOVIZfile=
Double-click on the yourdata.isoviz file in your GUI to launch ISOViz.jar with data loaded from the file.
If you previously associated the standalone executables, isoviz.exe and isovizQ.exe, with the respective .isoviz and .isovizQ file extensions, these earlier associations will override the one you created in the step above, so that you may wish to uninstall those programs; but you don't have to. Either way, to update the file associations to point to the launcher script using the method described near the top of the page.