New Development of SDL
Lingbo Liu
lingboliu@fas.Harvard.edu
KNIME
GeoAI + GenAI
Download & Install
Ollama
https://ollama.com/download
DeepSeek Model
Running Code
https://ollama.com/library
Download
DeepSeek Model
Local LLM in KNIME: DeepSeek R1
Choose
Model in KNIME
Download
KNIME Workflow
https://hub.knime.com/s/SBdPF69yo-xX54B4
Leverage open-source, local LLMs via Ollama
Reference: https://www.knime.com/blog/how-to-leverage-open-source-llms-ollama
Geocoding
global cities
Local RAG in KNIME: DeepSeek R1 and GPT4ALL
Local PDF Files
RAG
DeepSeek
QWen
New GAEK Nodes
GDELT Global Knowledge Graph Node
The Global Database of Events, Language, and Tone(GDELT)
SELF_IDENTIFIED_ATROCITY
Query
6
Last Hours
http://data.gdeltproject.org/documentation/GKG-MASTER-THEMELIST.TXT
https://blog.gdeltproject.org/announcing-our-first-api-gkg-geojson/
Open Sky Network Data Node
Real Time Flight Information
https://openskynetwork.github.io/opensky-api/
It returns live airspace information in the form of state vectors for research and non-commercial purposes. It does not provide commercial flight data such as airport schedules, delays or similar information that cannot be derived from ADS-B data contents!
User(Optional)
Password (Optional)
Create H3 Grid Node & Point to H3 Node
Global Scalable Hexagonal Grid
Geometry column
Zoom level
This node creates hexagonal grid inside the input polygon using H3. Your input polygon(s) will be automatically converted to a single polygon by calculating the union of all polygons and projected to EPSG:4326 before creating the grid.
Zoom=8
Zoom=10
Zoom=3
Zoom=1
This node returns the H3 Cell Indices and hexagons (optional) for each point in the input table. The output table will always keep the same order as the input table. You can choose to append the hexagons to the output table. You can also choose to keep the original table.
Directed Bézier Curve Node
Origin geopoint column
Destination geopoint column
Column name for result geometry
Curve
Number of points
100
Height scale
0.7
Curve angle (degrees)
60
Cross-state Travel for Cancer Care and Implications for Telehealth Reciprocity. JAMA Network Open, Accepted
Legend
State Boundary
Flow Direction
Flow Direction
This node generates a GeoSeries containing geometries representing smooth Bézier curves between origin and destination points. The Bézier curves are created based on user-defined parameters, including the number of points, height scaling, and curve angle. This transformation is particularly useful for visualizing flows or movements in a more intuitive manner compared to straight lines.
TomTom Isochrone Map Node
Calculate Reachable Range service provided by TomTom.
This node calculates the isochrone map (reachable range) for a list of given geometric points using the Calculate Reachable Range service of the Routing service provided by TomTom. It takes a geometry as origin and generates an isochrone map as output for each given geometry, illustrating areas reachable within a given time budget list. If the input geometry is not a point feature, the centroid will be used.
Workshop + Conference
Cambridge, MA 02138,USA
2025 CGA Conference & Internation Symposium on Spatiotemporal Data Science
May 22-24,2025
2025 Summer Workshop on Spatiotemporal Innovation
July 21-25,2025
Spatial Data Lab
https://sdl.gis.harvard.edu/
Meet us in AAG and AGU