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Le gestionnaire d’historique

L’historique des traitements

A chaque exécution d’un algorithme, les informations du traitement, paramètres utilisés, date et heure d’exécution, sont sauvegardées dans le gestionnaire d’historiques.

This way, it is easy to track and control all the work that has been developed using the processing framework, and easily reproduce it.

Le gestionnaire d’historiques est un ensemble d’entrées de registre, regroupées selon la date d’exécution, permettant de retrouver facilement quel algorithme a été exécuté à un moment donné.

Figure Processing 30:

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Historique win

Les informations de traitement sont sauvegardées sous forme de ligne de commande, même si l’algorithme a été exécuté depuis la boîte à outils. Cela permet également de comprendre l’interface en ligne de commande en visualisant la commande effectivement lancée depuis la boîte à outils.

Pour ré-exécuter une commande présente dans l’historique, double-cliquez sur l’entrée correspondante.

Along with recording algorithm executions, the processing framework communicates with the user by means of the other groups of the registry, namely Errors, Warnings and Information. In case something is not working properly, having a look at the Errors might help you to see what is happening. If you get in contact with a developer to report a bug or error, the information in that group will be very useful for her or him to find out what is going wrong.

Third-party algorithms are usually executed by calling their command-line interfaces, which communicate with the user via the console. Although that console is not shown, a full dump of it is stored in the Information group each time you run one of those algorithms. If, for instance, you are having problems executing a SAGA algorithm, look for an entry named ‘SAGA execution console output’ to check all the messages generated by SAGA and try to find out where the problem is.

Some algorithms, even if they can produce a result with the given input data, might add comments or additional information to the Warning block if they detect potential problems with the data, in order to warn you. Make sure you check those messages if you are having unexpected results.