How can I create a fields plot on a line with pyaedt in Ansys Maxwell?

[pasc1377]

I want to plot the flux density in the air gap along a line. I can do it manually and also in the old IronPython, but not with pyaedt. Can anyone help me?

I've tried something like:
m2d.post.create_report( expressions="Mag_B", domain="Sweep", variations={"Time": "9375000ns"}, primary_sweep_variable="Time", report_category="Fields", plot_type="Rectangular Plot", polyline_points=1001, plot_name="Test", )

Many thanks in advance.

[jvela018]

Hi @pasc1377 ,

To do this, you can create a line where to plot the field solution and then create a report on that line. You'll have two options, you either use the expressions available such as Mag_B, or you can use the fields calculator to extract the value you want to extract - for instance Bx. It'd look something like:
`

Create Polyline to extract local flux density values

cutline = m3d.modeler.create_polyline([["0mm", "-aMy", "0mm"], ["0mm", "lCy", "0mm"]], name="Polyline1")

# ## Plot the Magnitude of the B-field along a line
m3d.post.create_report(
    expressions=[r"Mag_B"],
    plot_name=r"Mag_B",
    plot_type=r"Rectangular Plot",
    context=cutline.name,
    report_category="Fields"
)

# ## Create expression for Bx
#
# Create an expression for Bx using PyAEDT advanced fields calculator.
bx = {
    "name": "Bx",
    "description": "X component of B",
    "design_type": ["Maxwell 3D"],
    "fields_type": ["Fields"],
    "primary_sweep": "Distance",
    "assignment": "",
    "assignment_type": ["Line"],
    "operations": [
        "Fundamental_Quantity('B')",
        "Operation('ScalarX')",
    ],
    "report": ["Field_3D"],
}
m3d.post.fields_calculator.add_expression(bx, None)

# ## Plot Bx as a function of Distance

bx_report = m3d.post.create_report(
    expressions="Bx",
    variations="",
    primary_sweep_variable="Distance",
    report_category="Fields",
    context=cutline.name,
    plot_name="Bx Along " + cutline.name,
)`

I also encourage you to go through our examples library. A good example to start with is this one https://examples.aedt.docs.pyansys.com/version/dev/examples/low_frequency/team_problem/bath_plate.html

I hope this helps.
/jvela018