NOAA Logo, NOAA Satellites and Information, National Geophysical Data Center (NGDC).

Data Access and Visualization Software

NOTE: The GeoVu Software is no longer supported. The content of this web site is provided for background and history only.

Read the documentation....


The GeoVu project was initiated at the National Geophysical Data Center (NGDC) in 1990 to simplify access to diverse data. GeoVu was developed with funding support from NOAA's Earth System Data and Information Management (ESDIM) Program.

Visit NGDC GeoVu FAQ for answers to commonly asked questions.

GeoVu addresses several barriers to data access:

  1. It provides access to many different types of data (including spatial, temporal, in-situ and satellite data sets) in many different formats without requiring data reformatting.
  2. It provides direct and intuitive access to metadata and documentation.
  3. It provides a common user-friendly interface to many data collections published by NOAA and others.
  4. It runs identically under three major operating systems: MS-Windows, Macintosh, and Unix.

GeoVu Capabilities

With GeoVu you can view a number of widely used data formats, of both image and point data. You can:

  • Pan and zoom images and point data plots
  • Generate profiles of data values
  • Examine individual data points in an image grid
  • Modify color palettes to create more meaningful displays
  • Extract subsets of large data sets for further analysis by other data analysis programs
  • Overlay geopolitical, coast and river boundary information onto georeferenced data
  • View histograms generated from image data
  • View metadata: data about the data
  • View slide shows and animations of image data files

Data Supported by GeoVu

The data files can be organized in an easy-to-read and sensible hierarchical fashion using menu files that control access to the data without being limited by the local file system and arcane file naming conventions. You can also easily associate metadata -- such as text descriptions -- with individual or groups of data files.

GeoVu can display any data type that can be described by a FreeForm format. GeoVu also provides built-in support for the following data types: GIF, BMP, PCX, AVHRR_GAC_1b_unpacked, Binary_raster, ERDAS_raster, GEOVU_raster, IDRISI_raster_version3, IDRISI_version4, McIDAS_PC_IMAGE, McIDAS_UNIX_IMAGE, Modified_DTED_DEM_format.

GeoVu does not support hierarchical formats like HDF or NetCDF, though there are tools which can convert these formats to ones GeoVu can read.

To use the Sampler data, copy the file to your GeoVu directory, then when you open Sampler data, you will need to specify the directory in which the gvdata directory was created after downloading. In other words, you will need to type something like:

  1. "My Hard Disk:Cool Data Collections" (Macintosh, ":" separates folders)
  2. "c:\cooldata" (Windows, "\" separates directories)
  3. "/home/users/jqsmith/cool_data" (Unix, "/" separates directories)

GeoVu Availability

GeoVu is now available for four platforms. Details on obtaining and installing GeoVu on each platform are available in the following documents:

You can also download the GeoVu application and a full set of user documentation in a variety of formats from our Web site:

Data Access Technologies and SoftWare Applications Team
National Geophysical Data Center
325 Broadway Mail Stop E/GC1
Boulder, CO 80303
(303) 497-6472
Internet Mail Web Home

Last Modified on: Wednesday, 12-May-2004 09:33:26 MDT

Last Modified on: Wednesday, 12-May-2004 09:33:26 MDT