Ecology tree canopy cover sampling calculator

Calculate estimated cover and marginal Wilson95 limits with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use estimated cover and marginal Wilson95 limits to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Canopy hits
65
Independent sampled points
100
Estimated cover and marginal Wilson95 limits
[0.65,0.552544432969,0.736357517569]

Try another scenario

Canopy hits
66
Independent sampled points
100
Estimated cover and marginal Wilson95 limits
[0.66,0.562777288547,0.745384792027]
Calculation method

Calculation method

Estimated cover and marginal Wilson95 limits

Binomial Wilson interval under independent equal-probability point sampling. Clustered designs require design-aware inference.

Symbols and units
a
Canopy hits
b
Independent sampled points

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Point classifications, sampling design. Returns Cover proportion and uncertainty. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Canopy hits: minimum 0, maximum 100000000. Independent sampled points: minimum 1, maximum 100000000.
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