Core Processing Requirements

This page lists various Cate processing requirements and applications and how they are addressed by the various Cate interfaces. See also: Reasons for CLI

Requirement/Application	API Script [1]	API REPL [2]	CLI	GUI
Get help for operation or workflow	Yes, but...	Yes	Yes	Yes
Call operation or workflow	Yes	No	Yes	Yes
Parameterise operation calls	Yes	No	Yes	Yes
Call Cate from OS shell scripts	Yes, but...	No	Yes	Yes
Batch processing	Yes	Yes, but...	Yes	Yes, but...
Service implementation	Yes	No	Yes	No
Progress observation	Yes, but... [3]	Yes, but... [3]	Yes	Yes
Progress cancellation	Yes, but... [3]	Yes, but... [3]	Yes	Yes
Logging	Yes, but... [3]	Yes, but... [3]	Yes	Yes

[1]

Users must first write the Python script and therefore know a little Python and the Cate API (e.g. read the API reference or copy sample code). Even the simplest script uses some boilerplate: import Cate, read parameter values from the command-line, read some data file, call Cate API, write some data files.

[2]	Users must start the REPL (IPython, Python) interpreter first. They must still know the Cate API. Importing Cate libs may be implicit.

[3]	(1, 2, 3, 4, 5, 6) Behavior must be programmed. API functions must support the feature. Users must know, how to use the API correctly.