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inbo / esas

R package to access and process ESAS data
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Create `detection_probability()` #3

Open peterdesmet opened 1 month ago

peterdesmet commented 1 month ago

Create a function to calculate detection probability/distance correction:

species platform visibility correction
zeekoet ship default 1.2
zeekoet ship low 2.0

Calculate_Detection_P_Ship_Based_Surveys in #1 should be investigated for this function. It is fine if it (currently) is limited and/or INBO-opinionated in calculating this correction.

The result is an dataframe with correction factors that could be included in the package (in data or inst), so it isn't calculated on the fly. This file is then used for density calculation.

nicolasvanermen commented 1 month ago

I have now calculated detection probabilities across the full ESAS database for 23 bird species, at least for those surveys following the standard ESAS methodology and without inclusion of additional covariates. Applying the function Calculate_Detection_P_Ship_Based_Surveys, detection probabilities can also be calculated for a specific share of the data, or (through slight changes in the function) also for aerial surveys and/or with inclusion of covariates (e.g. observation conditions).