Tom Schweich  

1996

1 January 1996

2006

18 December 2006

2007

9 October 2007

All of the data came from the ESRI Maps & Data DVD.

2008

Definition of the Mid Hills

3 August 2008

2009

2009 Desert Symposium Field Trip

Field Trip Day 1	Field Trip Day 2	Field Trip Day 2, Detail of Stops 5-10	Field Trip Day 3

The coordinate system used in this map is USA_Contiguous_Equidistant_Conic, with a central meridian of -118.5°, the approximate center line of this series of maps. The geographic system is GCS_North_American_1983.

All of the data is originally WGS1984, and is stored that way in the data base.

The map is designed to be reproduced in black and white, and was delivered to the publisher as a TIFF file.

The layers in this map are.:

• XYtblStopAnnoDay. Annotation for the field trip stops. Ended up with an annotation file for each day. Derived from labels of feature class XYtblStop.
• DS09AnnotationDay. Annotation for the map. An annotation file for each day's map. Shows location and physical feature data, such as "Sierra Nevada," and "Long Valley."
• ParksDetailAnno. Names of national and state parks.
• MRoadsAnno. Numbers of state and national highways, and interstates, shown in standard shields.
• XYtblGNISMonoCty. Derived from the GNIS, intended to show locations in Mono County, but whittled down several times until only Glass Mountain remained, and used only in the map for Day 2.
• XYtblStop. Started life as an Excel spreadsheet with the geographic coordinates of the field trip stops. Then created a feature class from XY table.
• CitiesDetail. Locations of towns and cities. Not labelled.
• Route20081108. Route of the field trip. Assembled from Mroads and Streets. Displayed twice on the maps, once in white underneath the roads, and once in black above the roads.
• Faults_Merge_CA_NV. Orignally intended to show major faults in California and Nevada, but whittled down until only the location of the Long Valley ring fault is shown. I don't distinguish between visible, hidden or inferred faults on my map.
• Mroads. Source: ESRI Data & Maps DVD. Source data for most road son the map.
• Streets. Source: ESRI Data & Maps DVD. Used on the detail for Day 2 to show the smaller roads.
• ParksDetail. Source: ESRI Data & Maps DVD. State and national parks, data a little obsolete.
• Water. Source: ESRI Data & Maps DVD. Many small features deleted.
• Rivers. ESRI Data & Maps DVD. Shown on the detail map for Day 2 Stops 5-10.
• States. ESRI Data & Maps DVD. State boundaries for California and Nevada.
• TopoQ24. Identifies the 7.5" topo maps covering the area in the map. Used when preparing the maps to compare my data and field trip stop data with features shown on the USGS quadrangles.
• shadedrelief. Source: ESRI Data & Maps DVD. Forms the backdrop for the maps.
• ned_77626690. National Elevation Dataset. Used only in the detail map for day 2. Symbology shows elevations greater than 1930 m as gray, while lower elevations are white. This approximates the distribution of Jeffrey pine vegetation.

22 September 2009

23 September 2009

The map also shows how much of the main island can be gotten onto a single ANSI E-size sheet, using a scale of 1:6000.

6 October 2009

The data source is a combination of county divisions from Cal-Atlas (http://www.atlas.ca.gov/) and the ArcGIS Data & Maps 9.3 DVD.

31 October 2009

The full size map is at: http://www.schweich.com/images/AlamedaESizeMap420091002sm.pdf

The source data is a combination of:

• City of Alameda GIS Data
  • Basemap
  • Fire Appurtenance
  • Utilities
  • Police
  • Road Appurtenance
  • Water Features

• Alameda Additions by me.
  • Basemap
    • Tiled Map Boundaries.

      Guides users to the correct map for an area of interest.

    • Pavement Additions.

      Small, but significant, areas of pavement missing from the city GIS data. Primarily paved areas around the College of Alameda, a shelter site, and paved areas around the Peets plant, a planned location for storage of a Mobile Disaster Unit (MDU).

    • Pseudo-Parcels.

      There are some important facilities that are not located on defined parcels. This is especially true at Alameda Point (the former naval air station), which is composed of just two parcels. Pseudo-Parcels were defined to highlight the locations of fire stations, fire training facilities, and Red Cross facilities where no parcels are defined.

  • Fire Appurtenance
    • Building Additions.

      Primarily the Peets plant and the new Alameda Free Library.

    • Evacuation Area Boundaries.
    • Fire Symbol Additions.

      Contains ball fields and tennis courts. These were included in the city GIS data, but the location and orientation were not sufficiently accurate.

  • Road Appurtenance
    • Path Additions

    • Street Bridges.

      In the city GIS data, bridges are visible only as EdgeOfPavement lines extending over water. This feature class makes the bridge appear as a solid object over the water.

    • Pedestrian Bridges.

      In the city GIS data, pedestrian bridges are visible only as lines representing the edges of paths extending over water. This feature class makes the pedestrian bridges appear as a solid objects over the water. Most of the pedestrian bridges cross the lagoons in Harbor Bay. The exception is the bicycle bridge from the main island to Bay Farm Island.

  • Airport (former Naval Air Station Alameda).

    Runways as polygons. Edges of runways, taxiways, and aprons as lines. Approximate. Intended only to suggest the configuration of paving in what would otherwise appear to be an empty quarter.

  • Water Features
    • Water Additions

  • Facility Type table.

    Associates a land use with a Parcel or Pseudo-Parcel. Used to indentify city buildings, schools, fire stations, other critical facilities, etc.

• ESRI Data and Maps DVD Version 9.3.1
  • Basemap

    • Streetscarto. Highways and streets outside the city of Alameda.

  • Water Features
    • Waterp. Additional areas of water, outside the extent of the city GIS data.

Literature Cited