City Form Lab                       SUTD / MIT

Better Design through Research.

UNA Toolbox Major Update Released! February 02, 2012

We are thrilled to release a major update to the Urban Network Analysis Toolbox for ArGIS. The source code has many improvements and we have added several features that make the toolbox better, faster and more powerful. Here is a summary of significant changes:

- The toolbox can now take building polygons (in addition to points) as inputs. No need to convert your polygons to points prior to using the toolbox, the new toolbox will do this on the fly and return the results as either polygons or points, whatever you used as inputs. 

- A checkbox next to the Input Buildings allows you to choose whether polygon centroids will be always placed inside the polygons, regardless of the polygons' shape.

- The Max Nearest Neighbor Distance is no longer required as an input. Just use whatever Search Radius you desire to compute the results, and that's it. Clean and simple.

- The output is now automatically colored by values. If you choose more than one network analysis index to be computed, then the first index in the order will be symbolized in the output.

- The adjacency matrix part of the code (Step 1) has been significantly improved and runs faster.

- In case of a user initiated cancellation during the execution of the toolbox, the file cleanup functions have been significantly improved.

- The output results are now returned as a feature class, instead of a layer and DBF file. None of the original input files are altered during the calculation process, the outputs are generated on a completely separate file. The DBF table can still be read as a separate table from the feature class files.

The updated toolbox can be downloaded from the usual link. The latest source code has also been updated on the source website

Enjoy and let us know of your experiences by e-mailing city form_rg [at] !

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