[postgis-users] Reclassify a Slope Surface

[JamesH]

Didn't think to use SummaryStats, thank you Pierre.

For ST_MapAlgebraExpr,: "you can use the term [rast] to refer to the pixel
value of the original band" 
Does this mean rast can be used as the value for each individual pixel?

For example, something like (max.value - [rast]) / max.value. Or have I
misinterpreted how [rast] can be used?

James

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GIS Undergraduate
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