3

I want to write some log in the log tab of processing algorithm User Interface.

I tried this :

from qgis.core import QgsMessageLog

QgsMessageLog.logMessage("test")

but when I launch the script "test" is not logged.

enter image description here

How to write a log in the processing User Interface ?

the processing guide log's chapter doesn't tell much about writing a log in this tab.

If i use :

from qgis.core import QgsMessageLog
QgsMessageLog.logMessage("test", tag="Processing", level=QgsMessageLog.INFO)

the log result is wrote under the console log panel called "Processing", but not in the processing GUI log tab. enter image description here

3

You can do this with global variable progress. see the user manual, processing chapter

progress.setText('Youpi')

Will print 'Youpi' in the processing log.

It supports html formatting:

progress.setText('<b>Youpi</b>')

to print in bold...

progress come also with setPercentage() methods to control the progress bar

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