John Biffl

Solver option save_idxs not supported for PDE indexing.

3

Discretized PDEs generate dict-based solutions of the form `sol.u[dv(iv1,iv2)][idx1,idx2]` which do not allow use of solver option `save_idx = [idx_n]`. This makes parameter fitting more challenging and would be a...

PDESystem Internal System Compatibility

6

The definition for a PDESystem includes a field for internal systems, ([PDESystem · ModelingToolkit.jl](https://docs.sciml.ai/ModelingToolkit/stable/systems/PDESystem/#Constructors)) but it looks like discretization of the PDESystem does not look at these systems, causing errors...

Plots.jl image display breaks in Pluto.jl for # points > 8000

4

Thank you for reporting an issue about Pluto! Let's get it fixed! # To report an issue, you need three things: 1. 📹 A video recording demonstrating the problem. (You...

Algorithm must be redefined between solves

1

When changing parameters between optimizations with a loss function of the form `x->lossfn(x, p)`, `ECA()` must be redefined between optimizations. This discourse post includes MWEs for use both with and...

Vector valued DataInterpolations.jl interpolation causes indexing failure in MTK equation

1

**Describe the bug 🐞** Using matrix u in DataInterpolations as a function in MTK equation causes an error when attempting to index the interpolation function. **Expected behavior** Including index of...

**Describe the bug 🐞** Using EnzymeVJP causes Julia to crash when taking the gradient of an ODE that uses ComponentArrays. **Expected behavior** Gradient should be returned without crashing. **Minimal Reproducible...