1) Click here to download the ECW Arcview plug-in.
2) Double-click on "Downloads" on the upper bar on the ER Mapper web page.
3) Scroll down to ECW Downloads and click on "ArcView ECW and ER Mapper Plug-in v.2.3".
4) Scroll down to "Download your copy now (2.895 kb)" and click on the word "download".
5) You must register by filling in your personal data when prompted.
6) After you've registered, click on "software" on the "Download the software (2.895 kb)" line and install the software using the ER Mapper instructions.
7) After the software has been installed, open ArcView, go to Extensions under "file" and load the ECW extension.
8) After downloading the geologic maps files you've chosen to view, unzip the files using pkzip or Winzip.
9) Open the geologic map as a view and specify "Image Data Source" under "Data Source Types".
10) Chose USGS_"map number"_UTM for a georeferenced map in UTM coordinates or USGS_"map number"_RAW for the map with all the collar information such as explanation, title, scale bars, etc.
Updated August 2, 2001
