This Node Is Deprecated — This version of the node has been replaced with a new and improved version. The old version is kept for backwards-compatibility, but for all new workflows we suggest to use the version linked below.
Go to Suggested ReplacementRecursive Loop EndThe Recursive Loop node pair enables the passing of a data table from the Recursive Loop End back to the Recursive Loop Start.
The Loop Start requires an initialized table. This table is output by the Recursive Loop Start in the first iteration of the loop.
The table received by the corresponding Recursive Loop End is passed back to the Recursive Loop Start node. Starting with the second iteration, the Recursive Loop Start node outputs the data as received by the Recursive Loop End.
The loop runs until one of the three stopping criteria is met:
- Maximum number of iterations: to ensure no endless loop is created, the loop will end after the set number of iterations.
- Minimal number of rows: to ensure enough rows are present for processing, the loop stops if it's input contains less rows than the set minimum.
- End loop with variable: the loop ends if the option is enabled and the value of the selected variable equals "true"
The data passed to port 0 is collected and passed to the output port. The data in port 1 is returned to the Recursive Loop Start node.
Options
Popular Successors
Concatenate (Optional in)2 %- Chunk Loop Start2 %
Column Appender2 %Table Row to Variable2 %- Column Aggregator2 %
Database Writer2 %- JSON Path2 %
- Strings to Binary Objects2 %
Recursive Loop Start2 %Column Rename1 %- RowID1 %
- Save Workflow1 %
- String Replacer1 %
- Split Collection Column1 %
- CSV Writer1 %
- XPath1 %
- End IF< 1 %
- Cache< 1 %
- Column Combiner< 1 %
Row Filter (deprecated)< 1 %- IF Switch< 1 %
- Breakpoint< 1 %
- Column Rename (Regex)< 1 %
- Constant Value Column< 1 %
Row Splitter (deprecated)< 1 %- GroupBy< 1 %
Joiner< 1 %- Missing Value< 1 %
- Lag Column< 1 %
- String Manipulation< 1 %
- Interactive Table (legacy)< 1 %
- XML to JSON< 1 %
Python Script (1⇒1)< 1 %- Java Edit Variable< 1 %
- Loop End (Column Append)< 1 %
Variable Condition Loop End< 1 %- Cell Splitter< 1 %
- Missing Value Column Filter< 1 %
- Reference Row Splitter< 1 %
- Counter Generation< 1 %
- Math Formula< 1 %
Excel Sheet Appender (XLS)< 1 %- JSON Row Combiner< 1 %
- JSON to Table< 1 %
- Extract Variables (Data)< 1 %
Table Row to Variable< 1 %Scorer< 1 %Cell Replacer< 1 %Number To String< 1 %- Reference Column Filter< 1 %
- Set Operator< 1 %
- Table Transposer< 1 %
- Rule-based Row Filter< 1 %
- Column Expressions (legacy)< 1 %
- String to XML< 1 %
- HTML Parser< 1 %
Recursive Loop End (2 ports)< 1 %Recursive Loop End< 1 %- Reference Row Filter< 1 %
- Partitioning< 1 %
- String Splitter (Regex)< 1 %
- Sorter< 1 %
- Top k Row Filter< 1 %
- Ungroup< 1 %
- Map viewer< 1 %
- RDKit Find Murcko Scaffolds< 1 %
- Page Source< 1 %
- String to URI< 1 %
- Inject Variables (Data)< 1 %
Table Column to Variable< 1 %Loop End< 1 %- Variable Loop End< 1 %
- Concatenate< 1 %
Cell Splitter< 1 %- Number to String< 1 %
- String to Number< 1 %
- Column Appender< 1 %
- Column Merger< 1 %
- Cross Joiner< 1 %
- Double to Integer< 1 %
- Duplicate Row Filter< 1 %
- Column Filter< 1 %
- Interactive HiLite Collector< 1 %
- Joiner< 1 %
- Value Counter< 1 %
- Rule Engine< 1 %
CASE Switch Data (End)< 1 %- Timer Info< 1 %
- DB Connection Closer< 1 %
- DB Writer< 1 %
- Math Formula (Variable)< 1 %
Excel Writer (XLS)< 1 %- Excel Writer< 1 %
- Replacer< 1 %
- Scatter Plot (JavaScript)< 1 %
- String to JSON< 1 %
- Table to JSON< 1 %
- GET Request< 1 %
Map Viewer< 1 %Web Searcher< 1 %- Quit WebDriver< 1 %
Variable to Table Column< 1 %CSV Reader< 1 %Database Reader< 1 %- Java Snippet< 1 %
Loop End (2 ports)< 1 %- Group Loop Start< 1 %
- Table Row to Variable Loop Start< 1 %
Variable Loop End< 1 %- Numeric Binner< 1 %
- Unpivot< 1 %
- Similarity Search< 1 %
- Parameter Optimization Loop End< 1 %
- Wait< 1 %
- Table Row to Variable< 1 %
Table Row To Variable Loop Start< 1 %Variable to Table Row< 1 %- Variable to Table Row< 1 %
- Table Writer< 1 %
List Files< 1 %Table Writer< 1 %Counting Loop Start< 1 %- Column List Loop Start< 1 %
- Column Resorter< 1 %
- Filter Apply< 1 %
- Pivot< 1 %
- Column Splitter< 1 %
CASE Switch Data (Start)< 1 %- Extract Table Dimension< 1 %
- TimeDelay Loop Start< 1 %
XLS Writer< 1 %- Java Snippet (simple)< 1 %
- Java Edit Variable (simple)< 1 %
- Tag Cloud< 1 %
- Row to Network< 1 %
Regex Extractor< 1 %- Speedy SMILES Ring Count< 1 %
- Copy/Move Files (legacy)< 1 %
- Download / Upload from List (legacy)< 1 %
CSV Writer< 1 %- CSV Reader< 1 %
Table Reader< 1 %Interval Loop Start< 1 %Generic Loop Start< 1 %- Scorer< 1 %
- Column Auto Type Cast< 1 %
Linear Correlation< 1 %- Domain Calculator< 1 %
- Denormalizer< 1 %
- Rank< 1 %
- Reference Column Resorter< 1 %
- Number Rounder< 1 %
- Row Sampling< 1 %
- String Manipulation (Variable)< 1 %
- Ruleset Editor< 1 %
- Rule-based Row Splitter (Dictionary)< 1 %
- Single sample t-test< 1 %
- Extract Table Spec< 1 %
- Line Plot (legacy)< 1 %
- Molecule Type Cast< 1 %
- Cell to Model< 1 %
- Variable Expressions (legacy)< 1 %
- OpenBabel< 1 %
- HeatMap (JFreeChart)< 1 %
- Line Chart (JFreeChart)< 1 %
XLS Sheet Appender< 1 %- String Matcher< 1 %
- Generic JavaScript View (JavaScript)< 1 %
- Lift Chart (JavaScript)< 1 %
- Text Output Widget (legacy)< 1 %
- JSON to XML< 1 %
- Feature Inserter< 1 %
- Python Script (legacy)< 1 %
- R Snippet< 1 %
- R View (Table)< 1 %
- Date&Time Shift< 1 %
- Moving Aggregator< 1 %
- RDKit Canon SMILES< 1 %
- RDKit Interactive Table< 1 %
- XLS Control Table Generator< 1 %
- Fingerprint Similarity< 1 %
- Speedy SMILES Possible Stereoisomer Count< 1 %
- Timed Loop End (1 port)< 1 %
- MolConverter< 1 %
- Create Collection Column< 1 %
- Delete Files (legacy)< 1 %
- Upload (legacy)< 1 %
- Wait...< 1 %
- Catch Errors (Data Ports)< 1 %
- Try (Data Ports)< 1 %
Variable to Table Column< 1 %- Table Column to Variable< 1 %
- Read Images< 1 %
Database Update< 1 %Database Looping< 1 %- Table Reader< 1 %
PMML Reader< 1 %- Table Creator< 1 %
- Feature Selection Loop Start (1:1)< 1 %
Recursive Loop Start (2 ports)< 1 %Table Row To Variable Loop Start< 1 %- X-Partitioner< 1 %
- PNN Predictor< 1 %
- k-Means< 1 %
- Linear Regression Learner< 1 %
- Regression Predictor< 1 %
Numeric Scorer< 1 %- Numeric Scorer< 1 %
- SVM Learner< 1 %
- PMML Simple Regression Tree Predictor< 1 %
- Add Empty Rows< 1 %
- Column Name Extractor< 1 %
- Column Renamer (Dictionary)< 1 %
- Column to Grid< 1 %
- Table Manipulator< 1 %
- Normalizer< 1 %
String Replace (Dictionary)< 1 %- Rule-based Row Splitter< 1 %
- Statistics< 1 %
- Empty Table Switch< 1 %
Merge Variables< 1 %- Send Email< 1 %
- Scatter Plot (legacy)< 1 %
- Color Manager< 1 %
- Shape Manager< 1 %
- ROC Curve (legacy)< 1 %
Hive Loader (legacy)< 1 %- SDF Writer< 1 %
- Parallel Chunk End< 1 %
- DB Insert< 1 %
DB Table Creator< 1 %- Random Number Assigner< 1 %
- Java Distance< 1 %
- Keras Network Executor< 1 %
- Line Plot (Plotly)< 1 %
- Table to PMML Ensemble< 1 %
Table to HTML< 1 %- Math Formula (Multi Column)< 1 %
- GroupBy Bar Chart (JFreeChart)< 1 %
- Scatter Plot (JFreeChart)< 1 %
Excel Writer (XLS)< 1 %Excel Sheet Appender (XLS)< 1 %- SSH Connector< 1 %
- Spark Line Appender< 1 %
Send to Tableau Server (TDE)< 1 %- TF< 1 %
- Tag Filter< 1 %
Bag of Words Creator< 1 %- Bag Of Words Creator< 1 %
- Strings to Document< 1 %
- Weka Cluster Assigner (3.7)< 1 %
- List Files/Folders< 1 %
- Google Sheets Writer< 1 %
- Tagged Document Viewer< 1 %
- Table View (JavaScript)< 1 %
- Line Plot (JavaScript)< 1 %
- ROC Curve (JavaScript)< 1 %
- Table Editor (JavaScript)< 1 %
- Single Selection Widget< 1 %
- Container Output (Table)< 1 %
- Container Output (JSON)< 1 %
- Columns to JSON< 1 %
JSON Writer< 1 %- Partial Dependence/ICE Plot< 1 %
- Network Viewer (local)< 1 %
- POST Request< 1 %
- Webpage Retriever< 1 %
- Legacy Date&Time to Date&Time< 1 %
- String to Date&Time< 1 %
- UNIX Timestamp to Date&Time< 1 %
- Date&Time Part Extractor< 1 %
- Date&Time-based Row Filter< 1 %
- Time Difference (legacy)< 1 %
- Date Field Extractor (legacy)< 1 %
- Mask Date/Time (legacy)< 1 %
- Moving Average< 1 %
- String to Date/Time (legacy)< 1 %
- Time to String (legacy)< 1 %
- Fingerprints< 1 %
- RDKit Generate Coords< 1 %
- RDKit Add Hs< 1 %
- RDKit Descriptor Calculation< 1 %
- RDKit From Molecule< 1 %
- RDKit Fingerprint< 1 %
- RDKit Remove Hs< 1 %
- RDKit Substructure Filter< 1 %
- RDKit Substructure Counter< 1 %
- Latitude/Longitude to Coordinate< 1 %
- HTML Node to Text< 1 %
- HTTP Result Data Extractor< 1 %
- HTTP Retriever< 1 %
Execute JavaScript< 1 %- Synchronize< 1 %
- Extract Text< 1 %
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Workflows
(3D) Fragment library design workflowKNIME Hub- 00_Visual_Analysis_of_Sales_Data(2)KNIME Forum
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Links
- KNIME E-Learning Course: Section 7.2. Re-executing Workflow Parts: Loopswww.knime.com/knime-introductory-course/chapter7/section2
- Workflow - Join and append columns from different files in loop - Helpby armingrudd on 2020-02-27forum.knime.com/p/82819
- Remove multiple words from a stringby AnotherFraudUser on 2021-03-18forum.knime.com/p/118879
- String replace (Dictionary) problemby danielesser on 2020-06-06forum.knime.com/p/93591
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