Veris Technologies VIS_NIR Spectrophotometer Probe - Operating Instructions - Manual (Page 33)

OM17-P4000VIS-NIR
4-12
7. Interpolation – Uses a Gaussian weighting to average spectra near a sampled
location, so the data can be matched up with properties of interest for calibration.
Spectra near to the location are weighted higher than spectra far away. Also, this will
interpolate several probes into one value if desired. Outputs a file named
[email protected] to the working directory. This file contains the spectra and
auxiliary data for each sampled GPS location.
Once the interpolation begins it will ask if the settings are correct. The settings this
refers to are a, b, and the depth increments. By default a and b will be 3 meters, if a
larger search area is desired then these can be updated. If the settings are fine press
YES, if the settings need to be updated select NO. After selecting NO and updating the
settings then press continue to begin the interpolation. After the interpolation is done the
complete light will be green, then press close window or F12 to return to the main
interface.
For Probe mode the depth increments determine how to split up the data taken. If .1 is
chosen then that data will be split up into 10cm increments and the output file will show
depths of .05, .15. .25…95. This is because the interpolation searches half of the depth
increment in each direction so the .05 measurement is from data at 0-10cm in depth
and the .15 measurement is from 0-20cm in depth and so on. The output file will
include data from the whole core profile, not just the specific depth suggested from the
clustering. See examples on next page.
Figure 15
Note: always use exit button or press F12 to close out of Veris NIR software.
Input
sampled
locations to
interpolate
Input field
data
Output file
with data at
each
sampled
location
Number of
spectra at
each
location
Distance in meters to search
through spectra in the x direction
Distance in meters to search
through spectra in the y direction
Distance in meters to search for
spectra in the z direction. This is
half of the distance of the depth
increments. This is only used
for the probe mode.
Increments in meters to space out the
1 meter of depth for the probe data.
This is only used in probe mode.
Spectral
data is
graphed as
it is found in
the
interpolation
program.