Install guide

Viewing CGMs in WOW
There are two different methods of implementation: client-side plugin or server-side
conversion, with advantages and disadvantages for both methods. A number of vendors
provide functionality in this area, e.g. SDI (http://www.sdicgm.com
) and Zeh
(http://www.zeh.com). Others are mentioned below.
Important note: By default, WOW implements a converter from SDI
(http://www.sdicgm.com). No further configuration should be required for simple viewing.
Client-side Plugin
A plugin is an extension to the browser that allows it to recognize a file type, in this case
CGM, and provide corresponding functionality. The advantage of this is rich functionality,
i.e. zoom, pan, scaled hardcopy etc. However, the entire CGM needs to download to the
client; these files can be large which increases network traffic. The plugin also needs to be
installed on every client system, with increased effort to install and maintain over time.
Options include Larson WebView CGM Pro (http://www.cgmlarson.com
) and CGM
Reader from SDI (http://www.sdicgm.com/sdiweb/cgm_reader.html). To implement,
download and install the plugin as per the vendor instructions and do the following:
prompt> cd $OWHOME/WebApps/cgi-bin
prompt> cp file_cgm.cgi.clientside file_cgm.cgi
The client-side version of file_cgm.cgi simply copies the CGM from server to client,
assuming there is a client-side plugin.
Server-side CGM to PNG converter
Rather than process the entire CGM locally, the server-side approach converts the CGM
into a highly compressed, lower-resolution Web format such as a jpeg or png which is
understood automatically by the browser.
The advantage of this approach is fast displays with much reduced network traffic. There
is also only a single (server) installation required, rather than on a per-client basis.
However the speed and simplicity are achieved by trading off against functionality. The
server-side approach is adequate for a quick look but not for submitting scaled hardcopy.
WOW implements a converter from SDI (http://www.sdicgm.com
) in the default
file_cgm.cgi. This may display a watermarked image. Please contact SDI
(
[e-mail]) for further information.
Other command-line CGM to png converters are available from JustCroft
(http://www.justcroft.com) and EasyCopy (http://myeasycopy.com
). To implement these
unsupported options, download and install the application as per the vendor's instructions.
You will need to do the following manual configuration:
prompt> cd $OWHOME/WebApps/cgi-bin
prompt> cp file_cgm.cgi.serverside file_cgm.cgi
prompt> vi file_cgm.cgi provide the correct info for the converter being used.
Due to the complexities of this issue and the range of possible configurations and software
tools, additional services may be required to fully implement CGM viewing in WOW.
WOW 5000.0.1.11 Release Notes Page 68 of 104 March 2014