This node allows you to execute arbitrary java code to create new columns or replace existing ones. Enter the java code in the text area.
Output Columns and Variables
Output columns are defined by creating and binding a java field for each column. The value assigned to this field will be written to the output.
This node allows adding or modifying flow variables in the same manner.
Additional libraries
It is also possible to use external java libraries (libraries that are not part of java boot classpath). In order to include external jar or zip files, add their location in the "Additional Libraries" tab.
Advanced users may want to make use of a library that is already present in the KNIME Analytics Platform installation as a bundle. Adding them to the list in the "Additional Bundles" tab will make them available to the java snippet's classpath.
Templates
You can define reusable templates with the "Create templates..." button. Templates are stored in the user's workspace by default and can be accessed via the "Templates" tab.
Options
Java Snippet
Contains the Java code editor to edit the snippet.
Additional Libraries
This tab allows adding custom java library archives to make them available on the classpath of the java snippet.
Additional Bundles
This tab allows making installed bundles available on the
classpath of the java snippet, allowing you to use classes e.g.
from org.apache.commons, org.json, com.google.guava and more.
Once a bundle has been added, its version will be saved with the
settings. Should the bundle not be present on an installation
the workflow is then opened with, the node will produce an error
and not run.
Should the bundle be present but in another version, it will suffice
as long as the major version did not change and the minor version
is larger or equal to the version the workflow was saved with
("semantic versioning").
Popular Successors
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Column Rename< 1 %- Column Resorter< 1 %
Table Column to Variable< 1 %- Rule Engine< 1 %
- Math Formula< 1 %
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Row Splitter (deprecated)< 1 %- Constant Value Column< 1 %
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Linear Correlation< 1 %- Number Rounder< 1 %
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Variable to Table Row< 1 %- Pivot< 1 %
- Column Expressions< 1 %
Parameterized Database Query< 1 %- Group Loop Start< 1 %
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Binary Scorer< 1 %- String to Number< 1 %
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- Column Renamer (Dictionary)< 1 %
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- String to Path< 1 %
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Numeric Scorer< 1 %Joiner< 1 %- PUT Request< 1 %
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Flow Variable IF Switch (Flow Variable Value)< 1 %- RowID< 1 %
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CASE Switch Data (End)< 1 %- Send Email< 1 %
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Excel Reader (XLS)< 1 %- Path to String< 1 %
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Tableau Writer (Hyper)< 1 %- Parameter Optimization Loop End< 1 %
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IF Switch (Flow Variable Value)< 1 %- Column Combiner< 1 %
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Regex Extractor< 1 %- Advanced MolConverter< 1 %
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Generic Loop Start< 1 %- Variable Loop End< 1 %
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Loop End (2 ports)< 1 %Recursive Loop Start< 1 %- Column Comparator< 1 %
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String Replace (Dictionary)< 1 %Rank Correlation< 1 %- Lift Chart (legacy)< 1 %
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- Copy/Move Files (legacy)< 1 %
- Active Branch Inverter< 1 %
- Inject Variables (Data)< 1 %
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Table Reader< 1 %- Counting Loop Start< 1 %
- Column Merger< 1 %
- Domain Calculator< 1 %
- Double to Integer< 1 %
- Rank Correlation< 1 %
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- Scatter Matrix (legacy)< 1 %
Color Appender< 1 %- DB Connection Closer< 1 %
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- Frequency Filter< 1 %
- Column Filter (legacy)< 1 %
- Python View (legacy)< 1 %
- UNIX Timestamp to Date&Time< 1 %
- Extract Time Window (legacy)< 1 %
- XML Row Combine and Write< 1 %
- Google Address Geocoder< 1 %
- Form Encoded HTTP Entity Creator< 1 %
Flow Variable End IF< 1 %- Collection to String< 1 %
- Save File Locally< 1 %
- Outlier Removal< 1 %
- Unzip Files (legacy)< 1 %
- Catch Errors (Data Ports)< 1 %
- Try (Data Ports)< 1 %
Table Row to Variable< 1 %- Recursive Loop Start< 1 %
Naive Bayes Learner< 1 %- Numeric Scorer< 1 %
- Simple Regression Tree Learner< 1 %
- Normalizer (Apply)< 1 %
- Table Transposer< 1 %
- Unpivot< 1 %
CASE Switch Data (Start)< 1 %- Interactive Table (legacy)< 1 %
- MySQL Connector< 1 %
- DB Connector< 1 %
- Parameterized DB Query Reader< 1 %
- Pie/Donut Chart (JavaScript)< 1 %
- Send to Power BI< 1 %
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- Generic JavaScript View (JavaScript)< 1 %
- Lift Chart (JavaScript)< 1 %
- JSON Path< 1 %
- Extract Outline Labeling< 1 %
- DELETE Request< 1 %
- Webpage Retriever< 1 %
- SPARQL Query< 1 %
- Date&Time to legacy Date&Time< 1 %
- Create Date&Time Range< 1 %
- Modify Time Zone< 1 %
- XML Column Combiner< 1 %
XML Writer< 1 %Click< 1 %- Page Source< 1 %
- Message Slack channel< 1 %
- SSH Connection (legacy)< 1 %
- URL to File Path< 1 %
- Catch Errors (Var Ports)< 1 %
- Try (Variable Ports)< 1 %
- Table Column to Variable< 1 %
Table Row to Variable< 1 %- Variable to Table Row< 1 %
- Table to Image< 1 %
CSV Writer< 1 %- Image Writer (Table)< 1 %
- Table Writer< 1 %
- Decision Tree Learner< 1 %
K Nearest Neighbor< 1 %Regression Predictor< 1 %- Scorer< 1 %
- SMOTE< 1 %
- Table Validator< 1 %
- Nominal Value Row Filter< 1 %
- Nominal Value Row Splitter< 1 %
- Normalizer< 1 %
- Row Sampling< 1 %
- String Replacer (Dictionary)< 1 %
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- Extract Table Dimension< 1 %
- Timer Info< 1 %
- Molecule Type Cast< 1 %
- DB Query< 1 %
DB Table Creator< 1 %- Distance Matrix Calculate< 1 %
Table to PDF< 1 %- Generic Web Service Client< 1 %
- Bar Chart (JFreeChart)< 1 %
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- Line Chart (JFreeChart)< 1 %
Excel Writer (XLS)< 1 %Excel Sheet Appender (XLS)< 1 %- Excel Reader< 1 %
Send to Tableau Server (Hyper)< 1 %- Punctuation Erasure< 1 %
- Stop Word Filter< 1 %
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- Python Script (legacy)< 1 %
- R View (Workspace)< 1 %
- R View (Table)< 1 %
- Salesforce SOQL< 1 %
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- XML Writer< 1 %
XML Reader< 1 %- XPath< 1 %
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Flow Variable IF Switch< 1 %- Configurable IF/CASE Switch (Flow Variable Value)< 1 %
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- Create Collection Column< 1 %
- Split Collection Column< 1 %
- Strings to Binary Objects< 1 %
- Breakpoint< 1 %
- Variable to Table Column< 1 %
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Table Column to Variable< 1 %Variable to Table Row< 1 %- CSV Reader< 1 %
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Table Writer< 1 %- Table Creator< 1 %
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- Case Converter< 1 %
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- String to SVG< 1 %
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Column Appender< 1 %- Column Name Extractor< 1 %
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Number To String (PMML)< 1 %- Reference Column Resorter< 1 %
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- Table Difference Finder< 1 %
- Rule Engine (Dictionary)< 1 %
CASE Switch Variable (End)< 1 %- Cache< 1 %
- Merge Variables< 1 %
- Conditional Box Plot (legacy)< 1 %
- Pie chart (legacy)< 1 %
- Scatter Plot (legacy)< 1 %
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- Save Workflow< 1 %
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Parquet Writer< 1 %Parquet Writer< 1 %- SDF Writer< 1 %
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- Microsoft SQL Server Connector< 1 %
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Excel Sheet Appender (XLS)< 1 %- Excel Cell Updater< 1 %
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- Java Edit Variable (simple)< 1 %
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- Java Snippet Row Splitter< 1 %
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Python Script (1⇒1)< 1 %- Python Source (legacy)< 1 %
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Extract Date&Time Fields< 1 %- Date&Time Shift< 1 %
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- String to Date/Time (legacy)< 1 %
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Binary Objects to Files< 1 %- Binary Objects to Strings< 1 %
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Gradient Boosted Trees Predictor< 1 %- Random Forest Learner< 1 %
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Concatenate (Optional in)< 1 %- Constant Value Column Filter< 1 %
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CASE Switch Model (Start)< 1 %- Data Generator< 1 %
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Microsoft SQL Server Connector< 1 %- Gaussian Distributed Assigner< 1 %
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Document Data Extractor< 1 %Document vector< 1 %Strings To Document< 1 %- Transfer Files (Table)< 1 %
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- List Box Widget< 1 %
- XML to JSON< 1 %
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- JSON to XML< 1 %
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- RDKit Generate Coords< 1 %
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Loop End (3 ports)< 1 %- Benchmark End (Flow Variable)< 1 %
- Collection Size< 1 %
- Matlab Snippet< 1 %
Python Snippet< 1 %- ChemSpider< 1 %
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- Byte Vector Distances< 1 %
- Download / Upload from List (legacy)< 1 %
- Files to Binary Objects< 1 %
- List Remote Files (legacy)< 1 %
Table Row To Variable Loop Start< 1 %- File Reader< 1 %
Loop End (Column Append)< 1 %- Fuzzy Rule Learner< 1 %
- PNN Learner (DDA)< 1 %
- Cluster Assigner< 1 %
- Silhouette Coefficient< 1 %
Decision Tree Learner< 1 %- Decision Tree Predictor< 1 %
- MDS (DistMatrix)< 1 %
- MDS< 1 %
- Random Forest Predictor< 1 %
- Auto-Binner (Apply)< 1 %
- Number to Category (Apply)< 1 %
String To Number< 1 %- Column to Grid< 1 %
- Correlation Filter< 1 %
- Edit Numeric Domain< 1 %
- Column Filter (PMML)< 1 %
- Missing Value (Apply)< 1 %
- Number to String (PMML)< 1 %
- Rule-based Row Filter (Dictionary)< 1 %
- Rule-based Row Splitter (Dictionary)< 1 %
- Numeric Median Test< 1 %
- Numeric Outliers< 1 %
- Parallel Coordinates (legacy)< 1 %
- Shape Manager< 1 %
- One Row to Many< 1 %
- Random Matcher< 1 %
- Scatter Plot (Plotly)< 1 %
- DL4J Feedforward Learner (Pretraining) (legacy)< 1 %
- Math Formula (Variable)< 1 %
- Pie Chart (JFreeChart)< 1 %
- Bubble Chart (JFreeChart)< 1 %
- Index Query< 1 %
XLS Writer< 1 %Excel Reader (XLS)< 1 %Tableau Writer (TDE)< 1 %- Keygraph Keyword Extractor< 1 %
- NGram Creator< 1 %
- String Matcher< 1 %
- PDF Parser< 1 %
- POS Tagger< 1 %
Bag of Words Creator< 1 %- Document Data Extractor< 1 %
- Term to String< 1 %
- Document Viewer< 1 %
- Column Filter Configuration< 1 %
- File Download (legacy)< 1 %
- Date&Time Input (legacy)< 1 %
- Column Selection (legacy)< 1 %
- Tagged Document Viewer< 1 %
- JSON Row Combiner and Writer< 1 %
- Container Input (JSON)< 1 %
JSON Reader< 1 %- Image Normalizer< 1 %
- Labeling to Image< 1 %
- Don't Save End< 1 %
- Tile Loop Start< 1 %
- Feature Inserter< 1 %
- Multi Feature Inserter< 1 %
- Object Inserter< 1 %
Python Predictor< 1 %Python Script (1⇒2)< 1 %Python Script (2⇒1)< 1 %- Date/Time Shift (legacy)< 1 %
- Mask Date/Time (legacy)< 1 %
XPath< 1 %- 3D D-Similarity< 1 %
- Molecular Properties< 1 %
Location Extractor< 1 %- Multipart Encoded HTTP Entity Creator< 1 %
- Synchronize< 1 %
- Window Slider< 1 %
- XLS Font Formatter< 1 %
- XLS Control Table from Cell Range< 1 %
- XLS Control Table Generator< 1 %
- XedMin< 1 %
- Canonical SMILES< 1 %
- Reaction Builder< 1 %
- Output File< 1 %
- SDF Writer< 1 %
- Message Slack User< 1 %
Loop End (Upto 4 ports)< 1 %- Table Row To Variable Run-for-time Loop Start< 1 %
Wait-for-time< 1 %- Read Variables< 1 %
- Benchmark End< 1 %
- Missing to Empty Collection< 1 %
- PDB Saver< 1 %
- URL Encode< 1 %
- Star< 1 %
Expand Well Position< 1 %- Range Filter< 1 %
- Normalize Plates (B-Score)< 1 %
- Z-Primes (PC x NC)< 1 %
- Groovy Script< 1 %
- Python Snippet< 1 %
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- R Snippet (2:1)< 1 %
- Chemical Terms< 1 %
- H Bond Donor/Acceptor< 1 %
- JC4XL Writer< 1 %
- Write To Excel Template (deprecated)< 1 %
- Download Files with Authentication< 1 %
- Automated Matched Pairs< 1 %
- ARIMA Learner< 1 %
- Create Directory (legacy)< 1 %
- Download (legacy)< 1 %
File Meta Info< 1 %- File Meta Info (legacy)< 1 %
- Zip Files (legacy)< 1 %
Variable to Table Column< 1 %Variable to Table Column< 1 %Table Column to Variable< 1 %Image Writer (Table Column)< 1 %Image Writer (Port)< 1 %Database Delete< 1 %Database Table Connector< 1 %Database Reader< 1 %Database Update< 1 %Database Looping< 1 %File Reader< 1 %Recursive Loop Start (2 ports)< 1 %- Naive Bayes Predictor< 1 %
- PNN Predictor< 1 %
- Fuzzy c-Means< 1 %
- Hierarchical Cluster Assigner (local)< 1 %
k-Means< 1 %Decision Tree Learner< 1 %Decision Tree Predictor< 1 %- K Nearest Neighbor< 1 %
- RProp MLP Learner< 1 %
PCA Apply< 1 %PCA Compute< 1 %Logistic Regression Learner< 1 %- Logistic Regression Learner< 1 %
- SVM Learner< 1 %
- SVM Predictor< 1 %
- PCA Apply< 1 %
Gradient Boosted Trees Learner< 1 %Gradient Boosted Trees Predictor< 1 %- Gradient Boosted Trees Predictor (Regression)< 1 %
Tree Ensemble Learner< 1 %- Tree Ensemble Learner< 1 %
- Tree Ensemble Learner (Regression)< 1 %
- Tree Ensemble Predictor (Regression)< 1 %
- Random Forest Learner (Regression)< 1 %
Random Forest Predictor< 1 %- Random Forest Predictor (Regression)< 1 %
- Binner (Dictionary)< 1 %
- Expand Bit Vector< 1 %
Cell Splitter< 1 %- Cell Splitter By Position< 1 %
- Category to Number (Apply)< 1 %
Number To String< 1 %Column Resorter< 1 %- Many to One< 1 %
- CAIM Binner< 1 %
- Edit Nominal Domain (Dictionary)< 1 %
Double To Int< 1 %- Equal Size Sampling< 1 %
- Reference Column Splitter< 1 %
- Filter Apply Row Splitter< 1 %
- HiLite Row Splitter< 1 %
- Interactive HiLite Collector< 1 %
Missing Value< 1 %- Denormalizer< 1 %
Normalizer< 1 %- One to Many (PMML)< 1 %
- Normalizer (PMML)< 1 %
String To Number (PMML)< 1 %- String to Number (PMML)< 1 %
- Nominal Probability Distribution Creator< 1 %
- Target Shuffling< 1 %
- Renderer to Image< 1 %
- Rule Engine Variable (Dictionary)< 1 %
Odds and Risk Ratios< 1 %- Kaplan-Meier Estimator< 1 %
Linear Discriminant Analysis< 1 %- Wilcoxon-Mann-Whitney Test< 1 %
CASE Switch Variable (Start)< 1 %- Create Temp Dir (legacy)< 1 %
Merge Variables< 1 %- Histogram (legacy)< 1 %
- PMML Compiling Predictor< 1 %
- SDF Stripper< 1 %
PostgreSQL Connector< 1 %- DB Query Injector< 1 %
- Conditional Label Assigner< 1 %
- Numeric Distances< 1 %
- k-Medoids< 1 %
- Keras Network Executor< 1 %
- Keras Input Layer< 1 %
- Keras Network Learner< 1 %
- DL Python Network Creator< 1 %
- DL Python Network Executor< 1 %
- DL Python Network Learner< 1 %
- Bubble Chart (Plotly)< 1 %
- Prediction Fusion< 1 %
- Table to H2O< 1 %
- GroupBy Bar Chart (JFreeChart)< 1 %
- JPython Function (Legacy)< 1 %
- JPython Script 1:1 (Legacy)< 1 %
- JPython Script 2:1 (Legacy)< 1 %
- Table Indexer< 1 %
XLS Reader< 1 %XLS Sheet Appender< 1 %Excel Reader (XLS)< 1 %Read Excel Sheet Names (XLS)< 1 %Excel Writer (XLS)< 1 %R Snippet< 1 %- Radar Plot Appender< 1 %
- Spark Line Appender< 1 %
- Send to Tableau Server< 1 %
- Tableau Writer< 1 %
Send to Tableau Server (TDE)< 1 %Word Vector Apply (legacy)< 1 %- Doc2Vec Learner (legacy)< 1 %
- Word2Vec Learner (legacy)< 1 %
- Term Document Entropy< 1 %
- TF< 1 %
- Topic Extractor (Parallel LDA)< 1 %
- Chi-Square Keyword Extractor< 1 %
- Markup Tag Filter< 1 %
- Tika Language Detector< 1 %
- Case Converter< 1 %
- Porter Stemmer< 1 %
Stop Word Filter< 1 %- Document Grabber< 1 %
- Oscar Tagger< 1 %
- StanfordNLP NE Learner< 1 %
- Sentence Extractor< 1 %
- Tag Cloud< 1 %
- External Tool (Labs)< 1 %
- Create Folder< 1 %
Google Authenticator (Deprecated)< 1 %- Google Sheets Appender< 1 %
- Nominal Row Filter Configuration< 1 %
- Credentials Configuration< 1 %
- String Configuration< 1 %
- Range Slider Filter Definition (legacy)< 1 %
- Value Filter Definition (legacy)< 1 %
- File Upload (legacy)< 1 %
- Tag Cloud (JavaScript)< 1 %
- Tile View (JavaScript)< 1 %
- Interactive Range Slider Filter Widget< 1 %
- String Widget< 1 %
- Single Selection Widget< 1 %
- Container Input (Table)< 1 %
Container Input (Variable)< 1 %- Container Output (Row)< 1 %
- PNG Image to ImgPlus< 1 %
- Data Row to Image< 1 %
- Labeling to RGB Img< 1 %
- Image Converter< 1 %
- Projector< 1 %
- Convex Hull< 1 %
- Connected Component Analysis< 1 %
- Label Transformer< 1 %
- Feature Calculator (BETA)< 1 %
MongoDB Reader< 1 %- Hierarchy Extractor< 1 %
- Node Name Filter< 1 %
- Parameter Optimization Loop Start< 1 %
Python Script (2⇒1)< 1 %Python View< 1 %Column Selection QuickForm (legacy)< 1 %String Input (legacy)< 1 %- R Learner< 1 %
- R Predictor< 1 %
- Fail in execution< 1 %
- Duration to String< 1 %
- Date Field Extractor (legacy)< 1 %
- Time Generator (legacy)< 1 %
- Time to String (legacy)< 1 %
Time Series Missing Value< 1 %- Twitter API Connector< 1 %
- Twitter Search< 1 %
- Country Extractor< 1 %
- XML Reader< 1 %
- XSLT< 1 %
Table to HTML String< 1 %- Connectivity< 1 %
- Fingerprints< 1 %
- OPSIN< 1 %
- Sum Formula< 1 %
- RDKit Chemical Transformation< 1 %
RDKit Functional Group Filter< 1 %- RDKit From IUPAC< 1 %
- RDKit MCS< 1 %
- RDKit Optimize Geometry< 1 %
- RDKit Fingerprint< 1 %
- RDKit To Molecule< 1 %
- RDKit Substructure Filter< 1 %
- Anonymity Assessment< 1 %
- Anonymization< 1 %
- Web Page Content Extractor< 1 %
Map Viewer< 1 %- URL Normalizer< 1 %
FreeGeoIP< 1 %Extract CSS Property< 1 %- Current URL< 1 %
WebDriver Factory< 1 %- Frame< 1 %
- Take Screenshot< 1 %
- Send File Path< 1 %
Table Extractor< 1 %
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Workflows
_01_PMR_AnalysisKNIME Hub
_Fetch_Experiment_Details_from_PubChemKNIME Hub- _Fetch_Experiment_Details_from_PubChemKNIME Hub
- 00 Install ExtensionsKNIME Hub
- 00 Install ExtensionsKNIME Hub
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Links
- Write text on an imageby qqilihq on 2019-05-27forum.knime.com/p/61250
- Counting characters text processingby qqilihq on 2019-04-08forum.knime.com/p/58211
- Popup Window in Workflowby qqilihq on 2021-02-01forum.knime.com/p/114747
- Adding serial number based on patternby tommy on 2021-03-13forum.knime.com/p/118310
- Knime prdictions to PLCby AnotherFraudUser on 2020-05-26forum.knime.com/p/92416
- Show all 21 links
Developers
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