Two versions of the viewer are available from Widener University:
a Windows application
a plugin for Netscape
The programmes are still undergoing changes so that this mirror site may not always have the most uptodate releases. Please check the home page at http://wwwchem.uwimona.edu.jm:1104/software/jcampdx.html for the latest information.
There is no limit to the number of data points that can be read and the compression type no longer needs to be defined in the header. If you are running Windows 3.1 or 3.11 then you will need to install Win32s (version 1.30 at least) to get it to work.
A 32-bit JCAMP-DX plug-in for Netscape (Windows 95 or NT) is now available as well. MAC and UNIX versions are not tooo far away! I know I have been saying this from Sept 96 but they are still not ready, SORRY. If there are too many more delays, maybe I won't need to port to MAC anyway?? "Rhapsody in Blue"???
chemical/x-jcamp-dx jdx or chemical/jcamp-dx jdxTo configure your browser to use the external viewer, attempt to download a JCAMP-DX file and let it complain that you have not configured a viewer and follow the onscreen directions. Alternatively, you can work your way through the Option menu (Edit/Preferences in vs 4 Netscape) to find helper application and add it manually yourself.
To configure the plugin, all you need to do is unzip and then move the
.dll file to your browser\program\plugins directory. To test, load the
included file plugtest.html to show an IR spectrum of polystyrene.
for NMR vs 5.0 Ref. Applied Spectroscopy, 1993, 47, 1093-1099.
for IR vs 4.24 Ref. Pure & Appl. Chem., 1991, 63, 1781-92.
for MS vs 4.24 Ref. Applied Spectroscopy, 1994, 48, 1545-1552.
A "must see" are the pages by Antony Davies and Bob McDonald on JCAMP-DX. (Tony chairs the IUPAC working group on JCAMP-DX and Bob, who is also a member, was involved in the original paper describing JCAMP-DX for IR). They have provided test data for downloading from their web sites.
Compression Tables 1. ASCII digits 0 1 2 3 4 5 6 7 8 9 2. Positive SQZ digits @ A B C D E F G H I 3. Negative SQZ digits a b c d e f g h i 4. Positive DIF digits % J K L M N O P Q R 5. Negative DIF digits j k l m n o p q r 6. Positive DUP digits S T U V W X Y Z s Compression Types handled by the programmes. a) FIX e.g. 99 98 97 96 98 93 fixed format b) PAC e.g. 99+98+97+96+98+93 packed c) SQZ e.g. 99I8I7I6I8I3 simple compression d) DIF e.g. 99aaaBe difference e) DUP e.g. 99aUBe difference & duplicates f) TSV e.g. 99TAB98TAB97TAB96TAB etc. Tab separated values g) CSV e.g. 99,98,97,96,98,93 Comma separated values
Release l.x allowed multiple spectra to be opened on a page and coped with $$comments even in the data lines.
Release "m" added error checking at each line and for checking header values against the data block.
Release "n" uses stream as file routines and has enabled DUP suppression for ALL data types. A previous error with DUPS, detected by Dr Harold Bell at Virginia Tech, was corrected in version l.
Release "q" is our first release that will handle BLOCKS. The
header should have:
##DATA TYPE= LINK
##BLOCKS = N+1
and each block containing the individual spectra should have
Version 0.99q.3 should fix the problem of a flickering screen experienced by users of Netscape 3.0. Those using newer versions of Netscape have not reported any problems of this type.
Version 0.99q.4 added the ability to read and write a number of additional reserved header items.
Please check the file size of your downloaded copy to ensure that the
transfer was complete. Email me
(Dr Robert Lancashire) if you are unsuccessful in downloading the
files and I can try sending them as an attachment by return mail.
Standard Disclaimer applies etc.
Home is http://wwwchem.uwimona.edu.jm:1104/software/jcampdx.html
Created Oct 1994. Last modified 16th June 1997, rjl