Map Library Blog
The MSU Map Library now has a fledgling inventory of licensed online digital topographic maps. Currently containing a single entry (Ethiopia JOGs at 1:250,000) over the summer you can watch this list grow with new entries!
MSU Libraries' first hosted-and-served set of digital topographic maps is of Ethiopia mapped at a scale of 1:250,000, prepared by the US Defense Mapping Agency Joint Operations Graphic. The finding aid linked from the library catalog displays the sheet boundaries and provides links to download jpg previews, 400 ppi TIF files, and 400 ppi GeoTIFF files.
Landscan is a world population dataset at approximately 1 km resolution (30" X 30"). It represents an ambient population (average over 24 hours). The LandScan algorithm uses spatial data and imagery analysis technologies and a multi-variable dasymetric modeling approach to disaggregate census counts within an administrative boundary. Since no single population distribution model can account for the differences in spatial data availability, quality, scale, and accuracy as well as the differences in cultural settlement practices, LandScan population distribution models are tailored to match...Continue reading "LandScan Global 2010 WebApp Access"...
The Map Library has a new look, with the service counter in a new location nearer the entrance. This change is part of a sequence of events that will eventually lead to a Geospatial Technology Area directly across from the service counter.
The MSU Map Library welcomes a new A3 scanner for flatbed scanning.
The Epson accommodates materials up to 12.2" x 17.2", will scan up to 2400 x 4800 ppi resolution and features 48-bit color. Flatbed scanning remains 5 cents per scan. The Epson complements our 42" HP roll scanner ($1 per scan) to enable scanning of bound publications and more fragile items.
The United State Geological Survey has released 2011 editions of the new "US Topo", the new generation of digital topographic maps. In October 2009, the USGS began to load US Topo maps to the USGS Store distribution point where the maps are available for free download. We have been waiting for the approximately 1,500 Michigan sheets to be released which just happened recently.
Search or zoom to your place of interest. Place a red marker on a location of interest, then click on the red marker to see a list of available maps. In addition to the new 2011 maps, you will also see...Continue reading "USGS releases new Michigan topographic maps"...
MSU affiliated library users now have access to Sanborn Fire Insurance Maps, Geo Edition FOR MICHIGAN. About a year ago we purchased 12 metropolitan areas, this new purchase is of 339 places in Michigan. MSU Map Library fans might remember that we've long had the browsable Sanborn maps. The advantage here is the geo functionality which makes most map sheets address-searchable. Map sheets also can be viewed on top of a modern Google maps image so you can see the differences. Map sheets can export as jpg or GeoTIFF. Note that not all map sheets are geo-referenced. Some map sheets can...Continue reading "All Michigan Sanborn Geo Edition is here!"...
MSU Libraries subscribes to the new Simplymap 2.0 interface which includes a wizard for making easy choropleth maps on thousands of variables. Simplymap is especially strong in population, demographics, and consumer behavior data. May be exported as GIS .shp files or as data tables. http://er.lib.msu.edu/item.cfm?item=050076 #simplymap #msulibraries
The Map Library recently acquired a gently used HP DesignJet 4500 Scanner. This roll-type scanner accepts sheets up to 42" wide (106 cm). Scan up to 508 pixels per inch, and save as JPG, TIF, or PDF onto your USB flash drive or writable CD. Only $1 per scan.
Collectors of Clason state road maps issued between 1923 and 1931 are presented with challenges around determining map publication dates. Unlike Rand McNally and Gousha, the Clason Map Company typically did not place dates or date codes on its products during this period. A systematic review of the maps contained in Clason state road maps, touring atlases, and Green Guides reveal that the road legends and other map symbols varied over the years in systematic ways. This Clason Map website, with content developed by Mark Greaves and Carl Liedholm, represents an attempt at providing a guide...Continue reading "Dating Clason Road Maps and Atlases"...