MICRODEM GIS Course Lab 1

With no data open in MICRODEM, go to File, Annapolis GIS data sampler.  If the 900 MB zipped data set is not present, it will be downloaded.  It will set a number of defaults to directories with this data, which will go into c:\mapdata\annapolis_data

We will not use all this data, but it is easily available for anyone who wants local data.

Data Layer GIS data types Directory Source Importance
DEM 3DEP/NED--National Elevation Data Raster NED USGS Seamless Server, July 2014.  This way of getting the data no longer works; we will cover the replacement method later, from the National Map. DEM--topographpy has many uses.  Better details means either bigger files or smaller coverage area.
CONED Raster land_water_merge_coned https://coast.noaa.gov/dataviewer/#/ The USGS CoNED Project integrates disparate light detection and ranging (LiDAR) and bathymetric data sources into a common database aligned both vertically and horizontally to a common reference system.  The resolution on land is much better than in the water.
Land Cover: NLCD 2011 Raster nlcd_2011 USGS Land Cover.  This has a significantly different map projection, which is part of the reason we will look at it.
USTopo GeoPDF Raster UStopo_geopdf USGS Digital version of the topographic quadrangle maps
OpenStreetMap Vector osm_july_2015
osm_dec_2016
http://download.bbbike.org/osm/ Crowd sourced; amount of detail varies spatially.  You could look at the change in coverage between the two dates.
TIGER Edges Vector tiger_edges Census Bureau Roads and coastlines.
Gazetteer Vector usgs_gazetteer USGS NAMES server Locations of named features in multiple categories
Lidar point cloud Point cloud usgs_las_point_cloud
las_2011_Anne_Arundel
USGS Earth Explorer Both of these are relatively low resolution, from 2004 and 2011.  The 2011 data covers a larger area, and includes point classification and an intensity image.  The 2004 data set shows the temporary buildings after hurricane Isabel.

Basics of running MICRODEM and how to perform common operations.

In this lab we will look at the different types of data manipulated  in GIS software, combine several layers on a single map, and export  maps to Google Earth.  The goals of the lab are:

  1. Understand the basic map operations in the GIS program
  2. Introduce the different types of data available in a GIS.  The options available in the GIS program depend on the type of data.
  3. Understand how the KISS principle used in the design of Google Earth affects its operations.

We will come back to many of the concepts touched on in this lab, in much more detail, but want to see an overview of what GIS can do before we get down in the details.


Deliverables in Blackboard.

In a  singleWord document and a single KMZ file.  You will correctly label the figures (caption below) and tables (caption above).  The figures will come after the first reference to them in the text.  Make this a discussion (well written); do not make it a question/answer.  The cut and pasted questions should not be in the deliverable Word file.

In a single KMZ file.  This will be organized and labeled so your audience can turn the layers on and off.  The labels should mean something to a real user, and not just to a GIS geek.


In a GIS program, there are almost always multiple ways to perform an action.  These instructions will generally give you one way, the links will show you others.

MICRODEM allows you to open multiple map windows at the same time, which some other other GIS programs will not.  Both MICRODEM and other programs allow you to stack data sets in layers to build up a complex map, and rapidly change the display.  Plotting order is important; the top layer may obscure layers under it.


You will need to use the following additional techniques:

Legends:

Icons

 These icons should be extracted and stored in c:\mapadata\icons, as a GIF or PNG file.  GIF format will probably be better to make the white background transparent.  If the "Right click" and save as option does not work, try to copy to clipboard and paste in Paint and then copy, use the snip tool, or make your own version in Paint.

KML and Google Earth

Verify what is at a location:


Suggestions added 8/26:

You are not expected to make your first maps perfect; the goals of this lab are given above, and we are learning by doing.  Hopefully with each lab the process will get easier, and your maps will get better.  If you would like to improve your maps, try the following:


Last revision 8/20/2018