JMAG-Designer provides the function to perform a 2D Fourier transform on a result data defined on the time and spatial axes. It enables a simultaneous analysis of time-frequency and spatial-frequency data.
This script performs a 2D Fourier transform on the calculation of the magnetic flux density for each spatially periodic edge at each time point.
Preconditions
- One or more magnetic field transient analysis studies have been calculated.
This script is run on the active study in the project tree. - The result calculation that serves as the source data for the 2D Fourier transform must be defined.
This script runs for on a dataset calculated the magnetic flux density results for each edge with rotational periodicity that title is "Edge". - The 2D Fourier transform is available in JMAG-Designer v25.0 and later.
Script Function
- Obtain the calculation result dataset for case 1 of the edge calculation titled "Edge".
- Set the necessary parameters for a 2D Fourier transform and perform to the obtained dataset.
# Copyright (c) 2026 JSOL CORPORATION
#
# This script is released under the MIT License.
# See the full license text at:
# https://www.jmag-international.com/scriptlibrary/jmag_script_library_mit/
app = designer.GetApplication()
def getCalculationDataSetWithSpecifiedStudyCase(calculationTitle, study, caseNo):
"""Get a data set by specifying the data set name, study, case number."""
calcDef = study.GetCalculationDefinition(calculationTitle)
dataSet = calcDef.GetCaseDataSet(caseNo)
return dataSet
def fourierTransform2DTimeSpace(dm, dataSet, graphName, unitType, rangeType):
"""Perform a two-dimensional Fourier transform on physical quantity data defined based on time and space axes."""
parameter = app.Create2DFourierTransformParameter(graphName)
parameter.SetDataSet(dataSet)
parameter.SetType(unitType)
parameter.SetDBRefValueType(u"Specify")
parameter.SetDBRefValue(u"2e-05")
parameter.SetDBMultiplier(20)
parameter.SetAxisType(rangeType)
parameter.SetMin(u"0.0001")
parameter.SetMax(u"0.0003")
parameter.SetTimePeriodicity(0) # 0:None, 1:1/2
parameter.SetFrequencyMultiplier(u"1")
parameter.SetUseTimeOrderLimit(True)
parameter.SetTimeOrderLimit(u"2")
parameter.SetFrequencyDomainAxisType(u"Order")
parameter.SetSpacePeriodicity(0) # 0:None, 1:1/2
parameter.SetSpaceOrderMultiplier(u"1")
parameter.SetUseSpaceOrderLimit(True)
parameter.SetSpaceOrderLimit(u"3")
parameter.SetAlgorithmType(u"DFT")
dm.Create2DFourierTransformWithParameter(parameter)
# ------------------------------
graphName = u"Surface_2D_Fourier_Transform"
unitType = u"Decibel"
rangeType = u"Time"
definitionTitle = u"Edge"
caseNo = 1
# ------------------------------
study = app.GetCurrentStudy()
dataSet = getCalculationDataSetWithSpecifiedStudyCase(definitionTitle, study, caseNo)
dm = app.GetDataManager()
fourierTransform2DTimeSpace(dm, dataSet, graphName, unitType, rangeType)
