Dear CF maintainers,

I would like to acknowledge that we also are interested in similar variable names as posted by mr. Martin Boettcher. The subject of the previous post was: [CF-metadata] [lc-cci] proposal for new CF standard names for land cover observation and classification

In particular we are interested (and I quote) in:

/  standard name: probability_of_water_occurrence
/>/  definition: probability that the observed pixel shows water
/>/  unit: none (a value between 0 and 1)/

and along with this a standard name, which defines the quality of this estimate, using a modifier. The suggestion by mr. Boettcher was:

/  standard name modifier: confidence_level
/>/  definition: applied to some discrete variable, denotes the probability 
that the assignment of the value to the variable is correct
/

Our variable name for the quality would then become:
standard_name: probability_of_water_occurrence_confidence_level

There was some inclarity as to what 'probability of water occurrence' means. In our case, we are preparing an operational automated service for flood mapping from EnviSAT ASAR satellite data (in the future, we'll use Sentinel-1). In our algorithms, each pixel is given a probability that it contains open water. We are never 100% sure that a pixel is land or water. Therefore, we need a 'probability' instead. The ability of our algorithm to distinguish between land or water is sometimes good and sometimes not. Therefore we need the 'confidence_level'.

Does this clarify our case? Please let me know if any clarifications are required.

Kind regards,
Hessel Winsemius

        




DISCLAIMER: This message is intended exclusively for the addressee(s) and may 
contain confidential and privileged information. If you are not the intended 
recipient please notify the sender immediately and destroy this message. 
Unauthorized use, disclosure or copying of this message is strictly prohibited.
The foundation 'Stichting Deltares', which has its seat at Delft, The 
Netherlands, Commercial Registration Number 41146461, is not liable in any way 
whatsoever for consequences and/or damages resulting from the improper, 
incomplete and untimely dispatch, receipt and/or content of this e-mail.


_______________________________________________
CF-metadata mailing list
CF-metadata@cgd.ucar.edu
http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata

Reply via email to