Map and Table Calculation

HYP( ) function

Returns the hypotenuse Ö(a² + b²), i.e. the positive square root of the sum of Value a square and Value b square.

Syntax

HYP(Value a, Value b)

Input

Output

Note:

When one of the input parameters is undefined, or when both input parameters are undefined, the output will also be undefined.

Tips:

• The HYP function finds the side opposite the right angle in a right-angled triangle and is often used in slope calculations. See the applied example below.
• When the definition symbol = is used, a dependent output map or dependent output column is created; when the assignment symbol := is used, the dependency link is immediately broken after the output map/column has been calculated.

Usable in

MapCalc, TabCalc, Simple calculators

Examples

Pocket line calculator examples:

MapCalc example:

OutMap = HYP(InMapA,InMapB)

TabCalc example:

OutCol = HYP(InColA,InColB)

Applied example: calculation of slope values in percentages

The exponential HYP function can for instance be used to calculate slope values in percentages, from 2 input maps which contain heigth differences in x-direction (map DX) and in y-direction (map DY).

Slopepct = (HYP(DX,DY)/PIXSIZE(DX)) * 100

PIXSIZE(DX) is a function which retrieves the pixel size of map DX. You can also directly fill out the pixel size of the input maps yourself (in this case 20). The results may exceed 100%, as a slope of 45° is equal to 100%. 

See also: