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RasterCalculator

Struct RasterCalculator 

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pub struct RasterCalculator;
Expand description

Raster calculator for map algebra with expression parsing

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impl RasterCalculator

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pub fn evaluate( expression: &str, bands: &[RasterBuffer], ) -> Result<RasterBuffer>

Evaluates a raster expression on one or more bands

§Arguments
  • expression - The expression to evaluate (e.g., “(B1 - B2) / (B1 + B2)”)
  • bands - Input bands (B1, B2, etc.)
§Examples

NDVI: "(B1 - B2) / (B1 + B2)" Conditional: "if B1 > 100 then B1 * 2 else B1" Math: "sqrt(B1 ^ 2 + B2 ^ 2)"

§Errors

Returns an error if the expression is invalid or evaluation fails

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pub fn apply_binary( a: &RasterBuffer, b: &RasterBuffer, op: RasterExpression, ) -> Result<RasterBuffer>

Applies a binary operation to two rasters (legacy API)

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pub fn apply_unary<F>(src: &RasterBuffer, func: F) -> Result<RasterBuffer>
where F: Fn(f64) -> f64,

Applies a unary function to a raster (legacy API)

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