Yale Map Department at Sterling Memorial Library

ArcGIS 9.3 LYR File Test

This post is to test the functionality of ArcGIS LYR files for the distribution of ArcGIS Server-based Geodatabase connections.

1911 Atlas of New Haven

CT Hydrology

Complete Map of New Haven

LANDSAT 7 ETM+ Goes Gratis!

On September 30th, 2008, the USGS began offering the LANDSAT 7 ETM+ archive data at not charge!  The rest of the LANDSAT archive (TM & MSS) will become available FREE OF CHARGE in December of 2008!  For more information about LANDSAT, Visit the USGS LANDSAT Website.

To Browse the catalog, use the GLOVIS Online Ordering Application.

Zoomify Viewer for the Venice Project…

I’ve been experimenting with various ways to serve VERY high resolution images over the internet efficiently, and I recently came across a GREAT little app called Zoomifier EZ! I’ve used the Zoomifier EZ application to batch process our 400dpi TIF images of historic maps into tile sets that can be Viewed using the Zoomify Viewer Shockwave Flash Viewer. Once these tile sets have been created, I use a Python script to parse the folders created and write a custom HTML viewer window for each tile set, based upon the original image dimensions. Check out the results in the Venice Project pages, and let me know what you think!

Previously, we have been making the high resolution images available as compressed JP2000 files, thoough this solution requires 3rd party viewers or plugins that can be difficult to install and are not supported across different browser types. What I really like about the Zoomify solution is that I can serve VERY high quality images in a browser based viewer, that only requires that Shockwave be installed. We’re still providing access to the non-tiled JP2000 files, for those who would like to view or make use of the images in applications such as ArcGIS, but the Zoomify solution provides use with an easy to use and intuitive interface for the general public to view our holding. Enjoy!

Venice Map Header

In case you haven’t noticed, the image header for the Map Department Blog is actually an instance of Google Maps. I’ve customized the Google Map by inserting Yale Campus buildings.  As I get more experience with the Google Maps API, I will add more functionality to this map.

In the case of the Venice Project Pages, the header is a high resolution image of one of our Venice Maps, using Google Maps as the viewer.

The Yale University Map Department Blog

Welcome to the Yale University Map Department Blog Pages. For the time being (while we get familiar with WordPress), this site will serve as a portal for experimental projects and collaborations produced out of the Map Department.