Plotting of only part of the grid

[janviebahn]

Is your feature request related to a problem? Please describe.

Currently, only the entire grid can be plotted. Consequently, the layout for the entire grid must be provided. However, for very large grids (say the grid of Europe) this is not always practical and useful since only part of it might be of interest for visualization (but the entire grid is needed for load flow computations).

Describe the solution you'd like

It would be great if one has the option to also choose only part of the grid for visualization. Why not just specifying in the layout the positions of the substations of interest (no layout of all substations needed) and then the corresponding part of the grid is visualized?

[BDonnot]

Thanks for the suggestion, any contribution is more than welcome there.

Currently, if you plot it with plotly, you can zoom in the part you want.

For matplotlib, you can also easily do that by setting some xlim / ylim in the figure you get:

fig = plot_helper.plot_obs(obs)
fig.axes[0].set_xlim(-100, 100)  # compute that based on what you want to plot
fig.axes[0].set_ylim(-100, 100)  # compute that based on what you want to plot
fig   # the updated figure

An "issue" if you plot only some substation, what to do for powerlines "at the border" (ie one end of the powerline is in the part you want to plot and the other is not ?

Beside that

[janviebahn]

Thanks for the current solutions.

It still would be nice if you need to provide in grid_layout.json only the substations that you want to visualize (e.g. 10 or 100) instead of all substations in grid.json (which can be 1000 and more).
Regarding the elements at the border I would say: plot all elements connected to the specified substations. The border lines/transformers will then only at one end be connected to a substation in the visualization.