Axis label get cut off when exporting the plot as an image

[JodokF]

Description
Just a little bug but when exporting a 3D plot of the trajectory, the axis labeling gets cut off. Could this bug be a consequence of update #700? I hope I didn’t just overlook a setting or another stupidly simple solution.

Danke dir im Voraus!

Command:

evo_traj bag -p reference_traj_2025-01-29-19-31-01.bag /reference_traj

See z-axis label on the right side of this exported image.

• evo version: 1.30.4
• Python version: 3.8.10
• operating system and version: Ubuntu 20.04
• did you change the source code? no
• output of evo_config show --brief --no_color:

{
    "console_logging_format": "%(message)s",
    "euler_angle_sequence": "sxyz",
    "global_logfile_enabled": false,
    "map_tile_api_token": "",
    "map_tile_provider": "OpenStreetMap.Mapnik",
    "plot_axis_marker_scale": 0.0,
    "plot_backend": "Qt5Agg",
    "plot_figsize": [
        6,
        6
    ],
    "plot_fontfamily": "sans-serif",
    "plot_fontscale": 1.0,
    "plot_invert_xaxis": false,
    "plot_invert_yaxis": false,
    "plot_legend_loc": "best",
    "plot_linewidth": 1.5,
    "plot_mode_default": "xyz",
    "plot_multi_cmap": "none",
    "plot_pose_correspondences": false,
    "plot_pose_correspondences_linestyle": "dotted",
    "plot_reference_alpha": 0.5,
    "plot_reference_axis_marker_scale": 0.0,
    "plot_reference_color": "black",
    "plot_reference_linestyle": "--",
    "plot_seaborn_enabled": true,
    "plot_seaborn_palette": "deep6",
    "plot_seaborn_style": "darkgrid",
    "plot_show_axis": true,
    "plot_show_legend": true,
    "plot_split": false,
    "plot_start_end_markers": false,
    "plot_statistics": [
        "rmse",
        "median",
        "mean",
        "std",
        "min",
        "max"
    ],
    "plot_texsystem": "pdflatex",
    "plot_trajectory_alpha": 0.75,
    "plot_trajectory_cmap": "jet",
    "plot_trajectory_length_unit": "m",
    "plot_trajectory_linestyle": "-",
    "plot_usetex": false,
    "plot_xyz_realistic": true,
    "pygments_style": "monokai",
    "ros_map_alpha_value": 1.0,
    "ros_map_cmap": "Greys_r",
    "ros_map_enable_masking": true,
    "ros_map_unknown_cell_value": 205,
    "ros_map_viewport": "keep_unchanged",
    "save_traj_in_zip": false,
    "table_export_data": "stats",
    "table_export_format": "csv",
    "table_export_transpose": true,
    "tf_cache_lookup_frequency": 10,
    "tf_cache_max_time": 10000.0
}

[MichaelGrupp]

It seems the problem here is rather that the tight bounding box setting introduced in #703 doesn't work well out of the box with 3D axis. The constrained layout from #700 doesn't cause the clipping (did a quick test removing the only tight bbox, and then it wasn't clipped).

Since I'd like to keep the tight bbox to avoid blank space (see #701), it would be good to find some way to work around this. Options that would work:

• Don't set "savefig.bbox": "tight", globally but only when saving a 2D axis.
  • 👎 only useful for --save_plot (PlotCollection.export())
  • 👎 won't be used when saving plots are saved interactively with the save button from a plot window (implemented in matplotlib, not here)
• Add padding using rcParams["savefig.pad_inches"].
  • 👍 can help when value is set correctly
  • 👎 magic number, probably highly dependent on figure size etc
  • 👎 adds padding around 2D plots that would be fine without it
• Zoom out a little when creating a 3D axis via ax.set_box_aspect(None, zoom=0.9)
  • 👍 only touches the 3D axis, 2D plots not affected
  • 👎 magic number, not sure if it helps in all cases

So there seems to be no really perfect solution, at least to my knowledge right now. But I would tend to go for the zoom option (configurable), as it's the least bad of the three 😄

[MichaelGrupp]

Released in v1.30.6

[JodokF]

Michael! Thank you very much for taking a look at my problem and helping me here! As you suggested I went for the zoom solution, with a little bit of tweeking it worked just thine!
Once again thank you for the work you are doing!