DCMotor example @named output throwing Latex error on analysis points

Specific Domains Modelling & Simulations
1

Running the ModelingtoolkitStandardLibrary example DCMotor https://docs.sciml.ai/ModelingToolkitStandardLibrary/stable/tutorials/dc_motor_pi/

Running the code as is it throws below error in the @named model = DCMotor():

Error message from Latexify

Failed to show value:

AssertionError: latexify does not support objects of type ModelingToolkitStandardLibrary.Blocks.AnalysisPoint.

The error is thrown from the analsysis points “:y” and “:u” in the example. Removing them from the connect()s OR suppressing the output from the @named assignment by adding;, the example runs fine.

Is this a problem with my Latex or Julia somewhere?

Julia 1.11.1

[0c46a032] DifferentialEquations v7.14.0
[f6369f11] ForwardDiff v0.10.36
[961ee093] ModelingToolkit v9.47.0
[16a59e39] ModelingToolkitStandardLibrary v2.16.0
[1dea7af3] OrdinaryDiffEq v6.89.0
[91a5bcdd] Plots v1.40.8
[7f904dfe] PlutoUI v0.7.60
[44cfe95a] Pkg v1.11.0

2

I don’t think it’s you. Can you share a reproducer?

3

It’s literally the ‘DCMotor with Speed Controller’ example copy and pasted. Or do you mean something else by ‘reproducer’ ?

4

Is there something special about your environment, for example using Jupyter or Pluto?

5

Ah: I’m running in Pluto notebook, on a Win11 machine in Firefox browser.

6

I see, so it must be something with the Pluto latex display in this case. I’ll see if I can recreate it in Pluto.

7

Interesting. @baggepinnen how would you display this?

8

Similar to how it’s displayed in the terminal I guess, as text. Connections without analysis points are just rendered as text IIRC?

9

Yes, so we probably need to add that the latexify of an analysis point is to just print mathtt its name

10

Track the issue here: [WIP] Add Latexify extension and AnalysisPoint support by ChrisRackauckas · Pull Request #339 · SciML/ModelingToolkitStandardLibrary.jl · GitHub

1 Like
11

Thank you Chris.