You can find the setpoint and other information about an AFM image by
retrieving the AFMinfo. Here is an example:
library(nanoAFMr)
#> Please cite nanoAFMr 2.1.11 , see https://doi.org/10.5281/zenodo.7464877
# loading the test file
filename = AFM.getSampleImages('ibw')
# retrieving an AFMinfo object
h = AFMinfo(filename)Basic information about an image can also be viewed, once you have an
AFMinfo object:
# generate a summary of the AFMinfo object
summary(h)
#> AFM Image Type: Cypher
#> Resolution: 128 x 128
#> Channels: 4
#> Resonance Freq (Hz): 257190.3
#> Scan Rate (Hz): 2.0032
#> Scan Angle (deg):
#> Notes: KC200, FePc, KC20170720Si,KC20170720Si_KC20
#> Data Items: 2Finding additional special information, using the function
AFMinfo.item; note that the search string is
case-sensitive.
sp = AFMinfo.item(h, 'Setpoint')
print(paste("Setpoint:",sp,"V"))
#> [1] "Setpoint: 0.74347 V"The names of the items can be found with the same function; here is a list of the first few item names that can be used:
allNames = AFMinfo.item(h)
print(allNames[1:50])
#> [1] "ScanSize" "FastScanSize" "SlowScanSize" "ScanRate"
#> [5] "XOffset" "YOffset" "PointsLines" "ScanPoints"
#> [9] "ScanLines" "ScanAngle" "ImagingMode" "InvOLS"
#> [13] "SpringConstant" "AmpInvOLS" "Amp2Invols" "FastRatio"
#> [17] "SlowRatio" "TopLine" "BottomLine" "ScanMode"
#> [21] "NapMode" "FMapScanTime" "FMapScanPoints" "FMapScanLines"
#> [25] "FMapXYVelocity" "FMapBookWise" "Channel1DataType" "DataTypeSum"
#> [29] "PhaseOffset" "PhaseOffset1" "NapPhaseOffset" "VoltageParm"
#> [33] "NapParms" "PreScanSetting" "OrcaOffset" "OrcaOffset2"
#> [37] "UserIn0Gain" "UserIn0Offset" "UserIn1Gain" "UserIn1Offset"
#> [41] "UserIn2Gain" "UserIn2Offset" "LateralGain" "LateralOffset"
#> [45] "OrcaGain" "OrcaGain2" "FastMapScanRate" "FastMapZRate"
#> [49] "dcdvPhaseOffset" "dcdZPhaseOffset"