#1376 Localization of CDK Depictions

[Sven Schrinner]

We are using the CDK for our project and experimented with the new CDK 1.5.12 release and the depiction generator. However, we noticed a problem when generating SVGs for molecules:
The numbers in the SVG string seem to be localized according to the system environment. On systems with german language the numbers contain a comma instead of a dot, since in German you usually use a comma as decimal separator. This causes the generated SVG to not be readable by any other application.
If we set the JVM environment to English, the SVGs look fine. This is only a workaround, though, since we cannot guarantee that our program, which uses the depiction engine, is always run in an English environment.

To reproduce the behavior, just create an SVG string out of a valid AtomContainer with the following JVM argument:

-Duser.language=en

I suspect the problem is the class "SvgDrawVisitor". It uses "java.text.DecimalFormat" to produce nice formatted numbers, but this class uses the system localization by default.

[Sven Schrinner]

Sorry, the JVM argument must be

-Duser.language=de

to generate "unreadable" SVGs.

[John May]

Thanks for pointing this out, should be an easy fix.

John

Regards,
John W May
john.wilkinsonmay@gmail.com

On 11 December 2015 at 13:28, Sven Schrinner schrins@users.sf.net wrote:

Sorry, the JVM argument must be

-Duser.language=de

to generate "unreadable" SVGs.

• [bugs:#1376] http://sourceforge.net/p/cdk/bugs/1376/ Localization of
  CDK Depictions*

Status: open
Group: master
Created: Fri Dec 11, 2015 01:24 PM UTC by Sven Schrinner
Last Updated: Fri Dec 11, 2015 01:24 PM UTC
Owner: nobody

We are using the CDK for our project and experimented with the new CDK
1.5.12 release and the depiction generator. However, we noticed a problem
when generating SVGs for molecules:
The numbers in the SVG string seem to be localized according to the system
environment. On systems with german language the numbers contain a comma
instead of a dot, since in German you usually use a comma as decimal
separator. This causes the generated SVG to not be readable by any other
application.
If we set the JVM environment to English, the SVGs look fine. This is only
a workaround, though, since we cannot guarantee that our program, which
uses the depiction engine, is always run in an English environment.

To reproduce the behavior, just create an SVG string out of a valid
AtomContainer with the following JVM argument:

-Duser.language=en

I suspect the problem is the class "SvgDrawVisitor". It uses
"java.text.DecimalFormat" to produce nice formatted numbers, but this class
uses the system localization by default.

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[John May]

Patched - https://github.com/cdk/cdk/pull/183