Performance parameters

Sentinel-3 Readers Options

SLSTR
OLCI
MERIS

NOTE: opttbx.properties file

The opttbx.properties file let's users specify special properties for the Optical Toolbox. There are two locations where this file can be defined. At both places, if the file does not yet exist it can simply be created as a plain text file.

One is located within the SNAP installation directory in the etc folder and defines the properties for the installed SNAP instance. Here you need usually admin right to modify the file.
The other is located in the .snap/etc folder within the user's home directory. The second, in the user directory defines the settings per user and overrules the ones in the installation directory.

Depending on the operating system and your settings the .snap folder might not be visible to you. You can do the following to make it visible:

OS Action
Windows Nothing to do. The directory is visible by default.
Linux On the command line you nee to type ls -la to see the directory. In a file explorer like the one of Ubuntu you need to make sure that in the settings the display of hidden files is enabled.
Mac Since macOS Sierra (10.12) you can press <CMD> + <SHIFT> + <.> in finder to make the directory visible. Prior this version you can nivagate to the user directory and then press <CMD> + <SHIFT> + <G>. This brings up an input dialog where you can enter the folder name .snap. On enter you will be navigated to this directory.