Schools Detection in Echoview

Source: R/EchoviewR.R

This function performs schools detection in Echoview using COM scripting.

EVSchoolsDetect(EVFile, acoVarName, outputRegionClassName,
  deleteExistingRegions, distanceMode, maximumHorizontalLink,
  maximumVerticalLink, minimumCandidateHeight, minimumCandidateLength,
  minimumSchoolHeight, minimumSchoolLength, dataThreshold)

Arguments

EVFile

An Echoview file COM object
acoVarName

A string containing the name of the acoustic variable to perform the analysis on
outputRegionClassName

A string containing the name of the output region
deleteExistingRegions

Logical TRUE or FALSE
distanceMode

for schools detection (see Echoview help).
maximumHorizontalLink

The maximum horizontal link in meters
maximumVerticalLink

The maximum vertical link in meters
minimumCandidateHeight

The minimum candidate height in meters
minimumCandidateLength

the minimum candidate length in meters
minimumSchoolHeight

The minimum school height in meters
minimumSchoolLength

The minimum school length in meters
dataThreshold

minimum integration threshold (units: dB re 1m^-1)

Value

a list object with four elements. $nbrOfDetectedschools, $thresholdData, $schoolsSettingsData, and $msg: message for processing log

References

http://support.echoview.com/WebHelp/Echoview.htm/

See also

EVOpenFile

Examples

# NOT RUN {
EVAppObj <- COMCreate('EchoviewCom.EvApplication')
EVFile <- EVOpenFile(EVAppObj,'~~/KAOS/KAOStemplate.EV')$EVFile
EVSchoolsDetect(EVFile = EVFile,
               acoVarName='120 7x7 convolution',
               outputRegionClassName = 'aggregations',
               deleteExistingRegions = TRUE,
               distanceMode = "GPS distance",
               maximumHorizontalLink = 15, #m
               maximumVerticalLink = 5,#m
               minimumCandidateHeight = 1, #m
               minimumCandidateLength = 10, #m
               minimumSchoolHeight = 2, #m
               minimumSchoolLength = 15, #m
               dataThreshold = -80)
# }