Working with .E00 data
By: GeoCommunity Staff
Lots of data at the GISDataDepot is served up in ARC/INFO .E00 format. We can't count the number of times in a
day that we at The GeoCommunity receive phone calls and email from people needing help working with
this data. The following article attempts to explain in basic, non-technical jargon, how to work with this data.
Data in .E00 is an ARC/INFO interchange file format. this is a simple ASCII file which can be opened
and viewed using any common text editor (wordpad, notepad, textpad).
The following gives you an idea what the data looks like:
EXP 0 /GISWK/FTP/PUB/TMP20/CNTYS.E00
1 18114 2 1 2 1 2
-1.9764960E+06 3.1712590E+06-1.9802236E+06 3.1723502E+06
2 18115 1 2 2 1 4
-1.9802236E+06 3.1723502E+06-1.9810328E+06 3.1690918E+06
-1.9762238E+06 3.1684802E+06-1.9764960E+06 3.1712590E+06
E00 is essentially an interchange data format developed to enable users to move data into and out of
IMPORT71 is a stand-alone program that converts an ARC/INFO interchange file created
on any other operating system into a ARC/INFO 7.x coverage or grid. If you receive ARC/INFO data
in interchange format you can use IMPORT71 to convert it to a data source in a format that can be
added to a project or view in ArcView (or used in other mapping programs).(Source: ArcView 3.2 help)
If you have ArcView GIS you already have IMPORT71... hopefully you know this! For you non-ArcView users,
Import71 can also be downloaded from the GeoCommunity software resources. Go to
http://software.geocomm.com/translators/arcview/ to download it.
Steps to run Import71:
download import71.exe (1.9 mb)
program should now exist in C:\Program Files\ESRI\Import71
specify an import file (the .E00 file)
specify a location for the resulting output coverage (enter the full directory path and coverage name - no extension needed)
in this example we are importing a US county data coverage called cntys.e00. The
resulting coverage will be store in a directory called "county", note an "info"
directory is also created.
you now have an ARC/INFO coverage that can be acced by a number of programs (including ArcView of course)
Using the resulting ARC/INFO coverage
ArcView - Add Theme/Data Source Type "Feature Data source". Select coverage "county"
To convert to ArcView .SHP format - Select Theme/Convert to Shape Coverage
GeoMedia - start GeoMedia
Creat a new GeoWorkspace
assign a connection name and description
assign the ArcInfo workspace folder (this is the directory where the ARCINFO coverage
exists - not the name of the coverage itself.
select access all features in the warehouse
let the wizard open as read-only
To view select Legend/Add FeatureClass County_area (county area features)
If you just simply want to view a E00 coverage there are a number of data viewing tools available
to help you. Visit our Software/Viewers
The most recent addition to these free products is GeoMatica™ FreeView from PCI Geomatics
This free geomatics software package will allow users to quickly and easily view data directly in a number of common data formats including E00, MIF, DEM, DLG, SDTS, and many more. FreeView can be found at www.pcigeomatics.com.
This program will enables viewing E00 data directly without any translation.
Additionally, users can use the "View Layer Attributes" option to view spatial attributes
associated with data features.
FME from safe.com
Finally, consider getting yourself the free 30 day fully function evaluation download of FME from safe software www.safe.com. FME is the driving force behind the popular Universal Translator that ships with MapInfo (www.mapinfo.com) and has become the defacto standard in data conversion software. (Comment added 01/09/02)