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Debugging Conversion Commands  

Normally, all foreign data access commands invoked by the NDF library execute silently, unless an error occurs or a command writes information to standard output (this should normally be avoided). To assist in debugging, however, the NDF library provides a tuning parameter `SHCVT'. This can be used to make it display all commands before they are executed but after message token substitution has taken place.

To enable this feature, the `SHCVT' tuning parameter should be set to 1. This can be done from within an application by calling the NDF_TUNE routine (see SUN/33), or from outside the application by setting the NDF_SHCVT environment variable, as follows:

setenv NDF_SHCVT 1


next up previous
Next: DATA EXTENSIBILITY
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Starlink System Note 20
R.F.Warren-Smith & D.S.Berry
17th July 2000
E-mail:ussc@star.rl.ac.uk

Copyright © 2000 Council for the Central Laboratory of the Research Councils