Post-Processing¶

After a successful solve, Elementa provides several tools to visualise and extract results.

Adding Plots¶

In the Results panel, click Add Plot and choose the plot type.

Surface Plot¶

Displays a colour-mapped scalar field over the mesh.

Setting	Description
Field	Result quantity (e.g. `V (Potential)`, `T (Temperature)`)
Colormap	Matplotlib colormap name (`viridis`, `hot`, `jet`, …)
Show mesh	Overlay mesh edges

Arrow Plot (Vector Field)¶

Displays arrows proportional to a vector field at each node.

Setting	Description
Field	Vector result (e.g. `E (Electric Field)`, `q (Heat Flux)`)
Scale	Arrow scale factor
Density	Subsample factor (1 = all nodes)

Contour Plot¶

Draws iso-lines (2-D) or iso-surfaces (3-D) at specified values of a scalar field.

Probes¶

Probes extract numerical values from the solution at specific locations.

Point Probe¶

Evaluates one or more result fields at a single spatial coordinate.

Click Add Probe → Point Probe.
Enter the coordinates (x, y) or (x, y, z).
The probe value is shown in the log console and the probe table.

Line Probe¶

Plots a result field quantity along a straight line between two points.

Click Add Probe → Line Probe.
Enter start and end coordinates.
Set the number of sample points.
A Matplotlib window opens with the profile plot.

Time Slider¶

For Time Dependent results, a slider at the bottom of the plot canvas lets you step through all computed time steps. The current time is displayed above the slider.

Exporting Results¶

Save figure — right-click any Matplotlib plot → Save As…
Export data — results arrays (phi, T, E, etc.) are NumPy arrays stored in the .elem project archive as results.npz and can be loaded with:

import numpy as np
data = np.load("results.npz")
phi = data["phi"]