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Python based Extension Development API: DoubleParameter can't display inf or nan
Hi, the knext.DoubleParameter can’t display inf or NaN values, which is quite important f.i. for default values of filters or alike. This max_lim: knext.DoubleParameter = knext.DoubleParameter(...
View ArticlePython based Extension Development API: ColumnParameter for input_table_group
Hi all, I’m using the Python Extension Development API. I want to set up a node with input_table_group to support an arbitrary number of input tables together with a ColumnParameter ParameterArray to...
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KNIME to Python Exporter: Roadmap for Additional Node Support
Dear KNIME users, I want to thank you for using k2pweb and knime2py and share news from KNIME to Python exporter Knowledge sharing Friends, I’m happy to share with you my new open-source project –...
View ArticleResources on creating extensions/nodes
Hello all, Does anyone know if there are any good resources out there about node and/or extension development? I am thinking about ‘for dummies’ and intermediate levels. Free stuff, stuff you have to...
View ArticleSoumitra Dutta Oxford: How do I create and configure my own KNIME node?
Hi Everyone, I’m Soumitra Dutta – Entrepreneur & Photographer Based in Oxford. I’m trying to create and configure my own KNIME node, but I’m not sure about the best approach. Could anyone share...
View ArticlePython Extension Development (Labs): View node with output table
Hi all, using the Python Extension Development API I’m trying to develop a view node which displays a matplotlib plot and returns an output table at the same time. Unluckily, during execution this...
View ArticleMinimal root log level in log4j3.xml overrides level set in preferences of...
I noticed that INFO-level log messages created by the NodeLogger in my Java-developed custom nodes no longer appear in the knime.log file or in the KNIME console, even though the Log Level...
View ArticleKNIME AP 5.8.2 Modern UI — Can we replace the node configuration dialog with...
Hello everyone, We are developing a custom node on KNIME Analytics Platform 5.8.2 with Modern UI. Requirement: When the user clicks the node’s “Configuration” / Configure button, we want to prevent...
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Python Extension Node - Table metadata interface
Dear all, In my Python-based Nodes implemented via the Knime Python Extension Development API I’d like to make use of table metadata of the following kind: per-table metadata: dict-like metadata which...
View Articlemodern UI - change widget value only if condition met
Hi, I try to implement a widget_1 which will change its value only if another widget_2 is set to a specific value. otherwise I would like to let the value of widget_1 untouched. I tried to use a...
View ArticlePython Extension Dev: Maximum Recursion Depth Exceeded when configuring logger
Dear all, while developing my own Python Extension using the new Pure Python Node Extensions Guide | KNIME Documentation , I stumbled upon a RecursionError: maximum recursion depth exceeded when...
View ArticlePython Extension Dev: Node with PyQt6/PySide6 Widget freezes on show()
Dear all, using the new Python Extension Development (Labs) documented here Pure Python Node Extensions Guide | KNIME Documentation and here Python Extension Development (Labs) — KNIME Python API...
View ArticleIssue with Optional widget
Hello, Not sure if I am doing something wrong but the following widget definition ignores the given title (and shows no description button). The widget name is generated from the variable name and...
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Troubleshooting help wanted - Issue with KNIME SDK
Hi, I had a working SDK with KNIME nightly until yesterday. Then, I got weird errors when starting KNIME. I decided to throw away my Eclipse workspace, I checked out releases/SDK from the knime SDK...
View Articleoutput_view as output_table
Similar to Python View output data table - KNIME Analytics Platform - KNIME Community Forum. To summarise, I need rich context-aware UI, e.g. adding new rows showing non-null counts, distinct values,...
View Articlebehaviour with default settings of optional widgets
While implementing my own node with an @OptionalWidget setting, I came across the following behavior which is probably not wanted? Instead of putting my own code here I first confirmed the behavior on...
View ArticleQuestion to WidgetGroup and Effects
Hi, let me first explain what I would like to do (though I have no clue whether I’ve chosen the right approach…) I would like to have a checkbox. If it’s checked several different widgets should be...
View ArticlePreview of KNIME Analytics Platform 5.9.0
Dear community developers: We’d like to draw your attention to a preview of KNIME Analytics Platform 5.9.0, which is scheduled to be released at the end of November. This is especially important if...
View Articleenable or disable a field based on the presence of domain values of a...
Sorry for all these very specific questions but I try to implement a node where the user can select a single column. If this column does have domain values a checkbox should be enabled (not set). Is...
View Article@OptionalWidget for Enum?
Hi, I try to provide a drop down list as an optional widget in my node settings. First question: Should that be possible? If not, I could still use a @ValueSwitchWidget to show or hide my setting. If...
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