Add a fill value at hyperslabbed numerical array creation time #331
Description
Is your feature request related to a problem? Please describe.
When writing seismic horizon, it is usual that the part of the survey where the horizon is defined is half or even less than the survey itself.
Consequently, I have often to write the null value in the corresponding horizon numerical array.
Describe the solution you'd like
I would like not to write the null value but I would like it as the default fill value for the numerical array.
Describe alternatives you've considered
Write all null values.
Additional context
This option should throw an exception in ETP context where the default fill value cannot be transfered.
See https://portal.hdfgroup.org/pages/viewpage.action?pageId=48809338