MICRODEM MODIS Operations

 
MICRODEM Main Screen in MODIS Rapid Response Viewer mode.  The embedded web browser window displays the NASA web site.  There are 3 ways to select regions:
  1. Picking the box outlining the region on one of the maps of the world.
  2. Picking the region by name from the bottom of the web page.
  3. Picking the region name from the drop down box which shows the scenes you have downloaded.

 
Dates can be selected with the "prev" and "next" buttons from the web site, or using the calendar picker that MICRODEM provides.  The web site provides a list of dates, but the Julian date format intimidates many users.  The two buttons allow fine tuning the pick to select dates with minimal cloud coverage, whereas the calendar picker allows rapid jumping when looking for one image from each season.
This button automatically opens the DEM and image for the date and region currently active.  When performing 4D viewing and animations, the web browser window minimizes.
You can get an OpenGL 3D view by:
  1. Picking the OpenGL button on the main toolbar.
  2. Outlining the region desired on the satellite image.
  3. Control the window using the slider bars and other controls to dynamically rotate and zoom in..
  1. You can get an oblique block view using the button on the main program toolbar, and the then outlining the region.  For this view, you double click and one corner, and then drag the box and double click again to set the box.
  2. You can use buttons on the toolbar to rotate the view, or change the vertical exaggeration.
  3. You can use the calendar buttons to cycle through the downloaded daily imagery.
  1. You can get a perspective view using the button on the main program toolbar, and the then outlining the region.  
  2. For this view, you double click to select the viewer's location, and then drag to outline the pie shaped viewport.  Double click again to draw the view.
  3. You can use the calendar buttons to cycle through the downloaded daily imagery.

 

 

Maintained by Professor Peter Guth

Department of Oceanography, US Naval Academy

last revision 4/1/2007