Raster Calculator and Math Tools (Abs, Exp, Exp10, Exp2, Float, Int, Ln, Log10, Log2, Negate, Round Down, Round Up , Square, Square Root)
Raster Calculator
How to Raster Calculator Tool in Arc Toolbox ArcMap ArcGIS??
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| Raster Calculator |
Path to access the tool
:
Raster
Calculator Tool, Map Algebra Toolset, Spatial
Analyst Tools Toolbox
Raster Calculator
Builds and executes a
single Map Algebra expression using Python syntax in a calculator-like
interface.
1. Map Algebra expression
The Map Algebra
expression you want to run.
The expression is composed by specifying the inputs, values, operators, and tools to use. You can type in the expression directly or use the buttons and controls to help you create it.
- The Layers and variables list identifies the datasets available to use in the Map Algebra expression.
- The buttons are used to enter numerical values and operators into the expression. The ( and ) buttons can be used to apply parentheses to the expression.
- A list of commonly used tools is provided for you.
2. Output raster
The output raster resulting from the Map Algebra expression.
Abs, Exp, Exp10, Exp2, Float, Int, Ln, Log10, Log2, Negate, Round Down, Round Up , Square, Square Root Tools
Path to access the Tools
:
Math Toolset,
Spatial Analyst Tools Toolbox
Math Tools 1
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| Math Tools 1 |
1. Input raster or constant value
The input raster for which to calculate the absolute values.
In order to use a number as an input for this parameter, the cell size and extent must first be set in the environment.
2. Output raster
The output raster.
The cell values are the absolute value of the cells of the input raster.
Abs
Calculates the absolute
value of the cells in a raster.
Exp
Calculates the base e exponential
of the cells in a raster.
Exp10
Calculates the base 10
exponential of the cells in a raster.
Exp2
Calculates the base 2
exponential of the cells in a raster.
Float
Converts each cell value
of a raster into a floating-point representation.
Int
Converts each cell value
of a raster to an integer by truncation.
Ln
Calculates the natural
logarithm (base e) of cells in a raster.
Log10
Calculates the base 10
logarithm of cells in a raster.
Log2
Calculates the base 2
logarithm of cells in a raster.
Negate
Changes the sign
(multiplies by -1) of the cell values of the input raster on a cell-by-cell
basis.
Round Down
Returns the next lower
integer value, just represented as a floating point, for each cell in a raster.
Round Up
Returns the next higher
integer value, just represented as a floating point, for each cell in a raster.
Square
Calculates the square of
the cell values in a raster.
Square Root
Calculates the square root of the cell values in a raster.
Math Tools 2
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| Math Tools 2 |
1. Input raster or constant value 1
The input whose values will be divided by the second input.
A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To be able to specify a number for both inputs, the cell size and extent must first be set in the environment.
2. Input raster or constant value 2
The input whose values the first input are to be divided by.A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To be able to specify a number for both inputs, the cell size and extent must first be set in the environment.
3. Output raster
The output raster.The cell values are the quotient of the first input raster (dividend) divided by the second input (divisor).
Divide
Divides the values of
two rasters on a cell-by-cell basis.
Minus
Subtracts the value of
the second input raster from the value of the first input raster on a
cell-by-cell basis.
Mod
Finds the remainder
(modulo) of the first raster when divided by the second raster on a
cell-by-cell basis.
Plus
Adds (sums) the values
of two rasters on a cell-by-cell basis.
Power
Raises the cell values
in a raster to the power of the values found in another raster.
Times
Multiplies the values of two rasters on a cell-by-cell basis.
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