Map Calculation Parameters

Calculation Parameters

Map Operations

You can perform several map operations from the Map Calculation feature.

Note: .xmp maps are compatible with all types of operation. The other source file types are compatible with Addition or Subtraction operation only.

Make sure the *.xmp files on which you want to perform an operation contain the same spectrum.

File addition

file1 + file2

File subtraction

file1 - file2

For photometric/radiometric map or if a specific wavelengths of a spectral map is selected, subtraction operation gives the raw results (negative and positive values). For colorimetric map or if all wavelength of a spectral map is selected, subtraction operation clamps negative values to zero. Resulted map has only positive values.

Map multiplication

map1 * map2

You can only multiply photometric maps. If the maps are colorimetric or spectral, they have to be exported (as extended maps) and converted into photometric or radiometric maps. If two maps with layers are multiplied, the layers will be multiplied together (for example in the first layer, there will be: source 1*source1, in the second layer source 2* source 2 etc.)

Map division

map1 / map2 Map division does not work with spectral or colorimetric maps.

Rotation

Rotates map1 with an angle. Type the angle value in degrees.

Map union

Creates a spectral or an extended map of 2 or more xmp files with all the layers of each file you selected.

Aiming

The aiming section allows you to adjust the direction/orientation of the beam to observe result variation.

The beam can be reoriented vertically and horizontally.

Note: With aiming, only the beam pattern moves on H and/or V axes. The map origin remains at the same position, like measurement points, lines and areas.

No Aiming

Aiming on H (-5°)

Note: For IESNA type A and B maps, if the vertical/horizontal translation of a pixel drives it out of the sensor bounds, the value of the pixel is lost. To ensure the accuracy of the results, limit the vertical/horizontal aiming angle to a few degrees.