#!/usr/bin/env python3
"""Plots Nudged Elastic Band (NEB) reaction paths and landscapes.
.. versionadded:: 0.0.2
This script provides a command-line interface (CLI) to visualize data
generated from NEB calculations. It can plot:
1. **Energy/Eigenvalue Profiles:** Shows the evolution of the energy or
lowest eigenvalue along the reaction coordinate. It can overlay multiple
paths (e.g., from different optimization steps) and use a
physically-motivated Hermite spline interpolation using force data.
2. **2D Reaction Landscapes:** Plots the path on a 2D coordinate system
defined by the Root Mean Square Deviation (RMSD) from the reactant
and product structures. This requires the 'ira_mod' library.
It can also interpolate and display the 2D energy/eigenvalue surface.
The script can also render atomic structures from a .con file as insets
on the plots for key points (reactant, saddle, product).
This script follows the guidelines laid out here:
https://realpython.com/python-script-structure/
"""
# /// script
# requires-python = ">=3.11"
# dependencies = [
# "click",
# "matplotlib",
# "numpy",
# "scipy",
# "jax",
# "adjustText",
# "cmcrameri",
# "rich",
# "ase",
# "polars",
# "h5py",
# "chemparseplot",
# ]
# ///
import logging
import sys
from pathlib import Path
import click
import matplotlib as mpl
import matplotlib.patheffects as path_effects
import matplotlib.pyplot as plt
import numpy as np
import polars as pl
from adjustText import adjust_text
from matplotlib.gridspec import GridSpec
from matplotlib.patches import ArrowStyle
from rich.logging import RichHandler
from chemparseplot.parse.eon.neb import (
aggregate_neb_landscape_data,
compute_profile_rmsd,
estimate_rbf_smoothing,
load_structures_and_calculate_additional_rmsd,
)
# --- Library Imports ---
from chemparseplot.parse.file_ import find_file_paths
from chemparseplot.parse.trajectory.hdf5 import (
history_to_landscape_df as hdf5_history_to_landscape_df,
)
from chemparseplot.parse.trajectory.hdf5 import (
history_to_profile_dats,
result_to_atoms_list,
)
from chemparseplot.parse.trajectory.hdf5 import (
result_to_profile_dat as hdf5_result_to_profile_dat,
)
from chemparseplot.parse.trajectory.neb import (
load_trajectory,
trajectory_to_landscape_df,
trajectory_to_profile_dat,
)
from chemparseplot.plot.neb import (
plot_energy_path,
plot_landscape_path_overlay,
plot_landscape_surface,
plot_structure_inset,
plot_structure_strip,
)
from chemparseplot.plot.theme import (
apply_axis_theme,
get_theme,
setup_global_theme,
)
# --- Logging Setup ---
logging.basicConfig(
level=logging.INFO,
format="%(levelname)s - %(message)s",
handlers=[RichHandler(rich_tracebacks=True, show_path=False, markup=True)],
)
[docs]
log = logging.getLogger("rich")
# --- Constants ---
[docs]
DEFAULT_PATH_PATTERN = "neb_path_*.con"
# --- CLI ---
@click.command()
@click.option(
"--input-dat-pattern",
default=DEFAULT_INPUT_PATTERN,
help="Glob pattern for input data files.",
)
@click.option(
"--input-path-pattern",
default=DEFAULT_PATH_PATTERN,
help="Glob pattern for input path files.",
)
@click.option(
"--con-file",
type=click.Path(exists=True, dir_okay=False, path_type=Path),
default=None,
help="Path to .con trajectory file.",
)
@click.option(
"--additional-con",
type=(
click.Path(exists=True, dir_okay=False, path_type=Path),
str,
), # Takes (Path, Label)
multiple=True,
default=None,
help="Path(s) to additional .con file(s) and label.",
)
@click.option(
"--augment-dat",
type=str,
default=None,
help="Glob pattern for extra .dat files for surface fitting.",
)
@click.option(
"--augment-con",
type=str,
default=None,
help="Glob pattern for extra .con files for surface fitting.",
)
@click.option(
"--sp-file",
type=click.Path(exists=False, dir_okay=False, path_type=Path),
default=Path("sp.con"),
help="Path to explicit saddle point file (eOn sp.con).",
)
@click.option(
"--source",
type=click.Choice(["eon", "traj", "hdf5"]),
default="eon",
help="Data source: 'eon' for .dat/.con pairs, 'traj' for extxyz, 'hdf5' for ChemGP HDF5.",
)
@click.option(
"--input-h5",
type=click.Path(exists=True, dir_okay=False, path_type=Path),
default=None,
help="Path to ChemGP NEB HDF5 file (result or history).",
)
@click.option(
"--input-traj",
type=click.Path(exists=True, dir_okay=False, path_type=Path),
default=None,
help="Path to extxyz trajectory file (used with --source traj).",
)
@click.option(
"--plot-type",
type=click.Choice(["profile", "landscape"]),
default="profile",
help="Type of plot to generate.",
)
@click.option(
"--rbf-smoothing",
type=float,
default=None,
show_default=True,
help="Smoothing term for 2D RBF.",
)
@click.option(
"--landscape-mode",
type=click.Choice(["path", "surface"]),
default="surface",
help="For landscape plot: 'path' or 'surface'.",
)
@click.option(
"--landscape-path",
type=click.Choice(["last", "all"]),
default="all",
help="Last uses an interpolation only on the last path, otherwise use all points.",
)
@click.option(
"--project-path/--no-project-path",
is_flag=True,
default=True,
help="Project landscape coordinates into the reaction valley (s, d).",
)
@click.option(
"--rc-mode",
type=click.Choice(["path", "rmsd", "index"]),
default="path",
help="Reaction coordinate for profile plot.",
)
@click.option(
"--plot-structures",
type=click.Choice(["none", "all", "crit_points"]),
default="none",
help="Structures to render on the path. Requires --con-file.",
)
@click.option(
"--surface-type",
type=click.Choice(
[
"grid",
"rbf",
"grad_matern",
"grad_imq",
"grad_imq_ny",
"matern",
"imq",
"grad_rq",
"grad_se",
]
),
default="rbf",
help="Interpolation method for the 2D surface.",
)
@click.option(
"--n-inducing",
type=int,
default=None,
help="Number of inducing points for Nystrom or RFF features. Defaults to 300 (Nystrom) or 500 (RFF).",
)
@click.option(
"--show-pts/--no-show-pts",
default=True,
help="Show all paths from the optimization on the RMSD 2D plot.",
)
@click.option(
"--plot-mode",
type=click.Choice(["energy", "eigenvalue"]),
default="energy",
help="Quantity to plot.",
)
@click.option(
"-o",
"--output-file",
type=click.Path(path_type=Path),
default=None,
help="Output image filename.",
)
@click.option(
"--start", type=int, default=None, help="Start file index for profile plot."
)
@click.option("--end", type=int, default=None, help="End file index for profile plot.")
@click.option(
"--normalize-rc", is_flag=True, default=False, help="Normalize reaction coordinate."
)
@click.option("--title", default="NEB Path", help="Plot title.")
@click.option("--xlabel", default=None, help="X-axis label.")
@click.option("--ylabel", default=None, help="Y-axis label.")
# --- Theme and Override Options ---
@click.option(
"--theme",
default="ruhi",
help="The plotting theme to use.",
)
@click.option("--cmap-profile", default=None, help="Colormap for profile plot.")
@click.option("--cmap-landscape", default=None, help="Colormap for landscape plot.")
@click.option("--facecolor", type=str, default=None, help="Background color.")
@click.option("--fontsize-base", type=int, default=None, help="Base font size.")
# --- Figure and Inset Options ---
@click.option(
"--figsize",
nargs=2,
type=(float, float),
default=(5.37, 5.37),
show_default=True,
help="Figure width, height in inches.",
)
@click.option(
"--fig-height",
type=float,
default=None,
help="Figure height in inches.",
)
@click.option(
"--aspect-ratio",
type=float,
default=None,
help="Figure aspect ratio.",
)
@click.option(
"--dpi",
type=int,
default=200,
show_default=True,
help="Resolution in Dots Per Inch.",
)
@click.option(
"--zoom-ratio",
type=float,
default=0.4,
show_default=True,
help="Scale the inset image.",
)
@click.option(
"--ase-rotation",
type=str,
default="0x, 90y, 0z",
show_default=True,
help="ASE rotation string.",
)
@click.option(
"--strip-renderer",
type=click.Choice(["ase", "xyzrender"]),
default="ase",
show_default=True,
help="Rendering backend for structure images.",
)
@click.option(
"--arrow-head-length",
type=float,
default=0.2,
show_default=True,
help="Arrow head length.",
)
@click.option(
"--arrow-head-width",
type=float,
default=0.3,
show_default=True,
help="Arrow head width.",
)
@click.option(
"--arrow-tail-width",
type=float,
default=0.1,
show_default=True,
help="Arrow tail width.",
)
# --- Path/Spline Options ---
@click.option(
"--highlight-last/--no-highlight-last",
is_flag=True,
default=True,
help="Highlight last path.",
)
@click.option(
"--spline-method",
type=click.Choice(["hermite", "spline"]),
default="hermite",
help="Spline interpolation method.",
)
# --- Inset Position Options ---
@click.option(
"--draw-reactant",
type=(float, float, float),
nargs=3,
default=(15, 60, 0.1),
show_default=True,
help="Reactant inset pos (x, y, rad).",
)
@click.option(
"--draw-saddle",
type=(float, float, float),
nargs=3,
default=(15, 60, 0.1),
show_default=True,
help="Saddle inset pos (x, y, rad).",
)
@click.option(
"--draw-product",
type=(float, float, float),
nargs=3,
default=(15, 60, 0.1),
show_default=True,
help="Product inset pos (x, y, rad).",
)
@click.option(
"--cache-file",
type=click.Path(path_type=Path),
default=Path(".neb_landscape.parquet"),
help="Parquet cache file.",
)
@click.option(
"--force-recompute",
is_flag=True,
default=False,
help="Force re-calculation of RMSD.",
)
@click.option(
"--show-legend",
is_flag=True,
default=False,
help="Show the legends.",
)
@click.option(
[docs]
"--ira-kmax",
default=IRA_KMAX_DEFAULT,
help="kmax factor for IRA.",
)
def main(
# --- Input Files ---
input_dat_pattern,
input_path_pattern,
con_file,
additional_con,
# --- Data Source ---
source,
input_traj,
input_h5,
# --- Plot Behavior ---
plot_type,
landscape_mode,
landscape_path,
project_path,
rc_mode,
plot_structures,
rbf_smoothing,
show_pts,
plot_mode,
surface_type,
n_inducing,
# --- Output & Slicing ---
output_file,
start,
end,
# --- Plot Aesthetics ---
normalize_rc,
title,
xlabel,
ylabel,
highlight_last,
# --- Theme ---
theme,
cmap_profile,
cmap_landscape,
facecolor,
fontsize_base,
# --- Figure & Inset ---
figsize,
fig_height,
aspect_ratio,
dpi,
zoom_ratio,
ase_rotation,
strip_renderer,
arrow_head_length,
arrow_head_width,
arrow_tail_width,
# --- Spline ---
spline_method,
# --- Inset Positions ---
draw_reactant,
draw_saddle,
draw_product,
show_legend,
# Caching
cache_file,
force_recompute,
ira_kmax,
sp_file,
augment_dat,
augment_con,
):
"""Main entry point for NEB plot script."""
# 1. Setup Theme
active_theme = get_theme(
theme,
cmap_profile=cmap_profile,
cmap_landscape=cmap_landscape,
font_size=fontsize_base,
facecolor=facecolor,
)
setup_global_theme(active_theme)
if fig_height and aspect_ratio:
figsize = (fig_height * aspect_ratio, fig_height)
elif fig_height or aspect_ratio:
log.error(
"Both --fig-height and --aspect-ratio must be provided together. Using default figsize."
)
fig = plt.figure(figsize=figsize, dpi=dpi)
# Layout Logic
has_strip = plot_structures in ["all", "crit_points"] and plot_type == "landscape"
if has_strip:
# Heuristic layout adjustment
n_expected = (3 if plot_structures == "crit_points" else 10) + len(
additional_con or []
)
max_cols = 6
n_rows = (n_expected + max_cols - 1) // max_cols
calc_hspace = 0.8 if n_rows > 1 else 0.3
gs = GridSpec(2, 1, height_ratios=[1, 0.25], hspace=calc_hspace, figure=fig)
ax = fig.add_subplot(gs[0])
ax_strip = fig.add_subplot(gs[1])
apply_axis_theme(ax_strip, active_theme)
else:
ax = fig.add_subplot(111)
ax_strip = None
apply_axis_theme(ax, active_theme)
atoms_list = None
additional_atoms_data = []
sp_data = None
# Only attempt to load structures if specifically requested or needed for the plot type
if con_file:
try:
atoms_list, additional_atoms_data, sp_data = (
load_structures_and_calculate_additional_rmsd(
con_file, additional_con, ira_kmax, sp_file
)
)
except Exception as e:
log.error(f"Error loading structures: {e}")
# Critical failure for landscape/RMSD modes
if plot_type == "landscape" or rc_mode == "rmsd":
log.critical("Cannot proceed without structures. Exiting.")
sys.exit(1)
# --- Trajectory source: load once if applicable ---
traj_atoms_list = None
if source == "traj":
if not input_traj:
log.critical("--input-traj is required when --source traj is used.")
sys.exit(1)
traj_atoms_list = load_trajectory(str(input_traj))
if plot_type == "landscape":
# --- Landscape Plot ---
z_label = (
"Relative Energy (eV)"
if plot_mode == "energy"
else r"Lowest Eigenvalue (eV/$\AA^2$)"
)
if source == "traj":
df = trajectory_to_landscape_df(traj_atoms_list, ira_kmax=ira_kmax)
# Use traj structures for con_file features when not provided
if atoms_list is None:
atoms_list = traj_atoms_list
elif source == "hdf5":
if not input_h5:
log.critical("--input-h5 is required when --source hdf5 is used.")
sys.exit(1)
h5_str = str(input_h5)
# Prefer history file for multi-step landscape
try:
df = hdf5_history_to_landscape_df(h5_str, ira_kmax=ira_kmax)
except Exception:
log.warning("History read failed, falling back to single-step result.")
from chemparseplot.parse.trajectory.hdf5 import (
result_to_atoms_list as _r2a,
)
from chemparseplot.parse.trajectory.neb import (
trajectory_to_landscape_df as _traj_ldf,
)
hdf5_atoms = _r2a(h5_str)
df = _traj_ldf(hdf5_atoms, ira_kmax=ira_kmax)
if atoms_list is None:
atoms_list = result_to_atoms_list(h5_str)
else:
dat_paths = find_file_paths(input_dat_pattern)
con_paths = find_file_paths(str(input_path_pattern))
if not dat_paths:
log.critical(f"No data files found for pattern: {input_dat_pattern}")
sys.exit(1)
# Fallback if no path files found but main file exists
if not con_paths and con_file:
con_paths = [con_file]
y_col = 2 if plot_mode == "energy" else 4
df = aggregate_neb_landscape_data(
dat_paths,
con_paths,
y_col,
None,
cache_file=cache_file,
force_recompute=force_recompute,
ira_kmax=ira_kmax,
augment_dat=augment_dat,
augment_con=augment_con,
ref_atoms=atoms_list[0] if atoms_list else None, # main reactant
prod_atoms=atoms_list[-1] if atoms_list else None, # main product
)
# Surface Generation
if landscape_mode == "surface":
if landscape_path == "last":
max_step = df["step"].max()
df_surface = df.filter(pl.col("step") == max_step)
else:
df_surface = df
# Prepare arrays
r_all = df_surface["r"].to_numpy()
p_all = df_surface["p"].to_numpy()
z_all = df_surface["z"].to_numpy()
gr_all = df_surface["grad_r"].to_numpy()
gp_all = df_surface["grad_p"].to_numpy()
step_all = df_surface["step"].to_numpy()
# Heuristic for RBF smoothing if missing
if rbf_smoothing is None:
rbf_smoothing = estimate_rbf_smoothing(df)
log.info(f"Calculated heuristic RBF smoothing: {rbf_smoothing:.4f}")
extra_pts = []
if sp_data:
extra_pts.append([sp_data["r"], sp_data["p"]])
for _, add_r, add_p, _ in additional_atoms_data:
extra_pts.append([add_r, add_p])
extra_pts_arr = np.array(extra_pts) if extra_pts else None
plot_landscape_surface(
ax,
r_all,
p_all,
gr_all,
gp_all,
z_all,
step_data=step_all,
method=surface_type,
rbf_smooth=rbf_smoothing,
cmap=active_theme.cmap_landscape,
show_pts=show_pts,
# so we always show 5% and 95%, this is the user defined additional one
# TODO(rg): just be a user parameter..
variance_threshold=0.5, # 50% uncertainty
project_path=project_path,
extra_points=extra_pts_arr,
n_inducing=n_inducing,
)
# Path Overlay (Final Step)
max_step = df["step"].max()
df_final = df.filter(pl.col("step") == max_step)
final_r = df_final["r"].to_numpy()
final_p = df_final["p"].to_numpy()
final_z = df_final["z"].to_numpy()
plot_landscape_path_overlay(
ax,
final_r,
final_p,
final_z,
active_theme.cmap_landscape,
z_label,
project_path=project_path,
)
# Saddle Point Marker
if sp_data:
# Use explicit SP coordinates
sp_x_raw, sp_y_raw = sp_data["r"], sp_data["p"]
log.info(f"Plotting explicit SP at R={sp_x_raw:.3f}, P={sp_y_raw:.3f}")
else:
# Fallback to heuristic
if plot_mode == "energy":
saddle_idx = np.argmax(final_z[1:-1]) + 1
else:
saddle_idx = np.argmin(final_z)
sp_x_raw, sp_y_raw = final_r[saddle_idx], final_p[saddle_idx]
# Apply projection to saddle point if enabled
if project_path:
r_start, p_start = final_r[0], final_p[0]
r_end, p_end = final_r[-1], final_p[-1]
vec_r = r_end - r_start
vec_p = p_end - p_start
path_norm = np.hypot(vec_r, vec_p)
u_r, u_p = vec_r / path_norm, vec_p / path_norm
v_r, v_p = -u_p, u_r
sp_x = (sp_x_raw - r_start) * u_r + (sp_y_raw - p_start) * u_p
sp_y = (sp_x_raw - r_start) * v_r + (sp_y_raw - p_start) * v_p
else:
sp_x, sp_y = sp_x_raw, sp_y_raw
ax.scatter(
sp_x,
sp_y,
marker="s",
s=int(active_theme.font_size * 2),
c="white",
edgecolors="black",
linewidths=1.5,
zorder=100,
label="SP",
)
if additional_atoms_data:
marker_cmap = mpl.colormaps.get_cmap("tab10")
for i, (_, add_r, add_p, add_label) in enumerate(additional_atoms_data):
color = marker_cmap(i % 10)
if project_path:
plot_add_r = (add_r - r_start) * u_r + (add_p - p_start) * u_p
plot_add_p = (add_r - r_start) * v_r + (add_p - p_start) * v_p
else:
plot_add_r, plot_add_p = add_r, add_p
ax.plot(
plot_add_r,
plot_add_p,
marker="*",
markersize=int(active_theme.font_size * 1.1),
color=color,
markeredgecolor="white",
markeredgewidth=1.0,
linestyle="None",
zorder=102,
label=add_label,
)
if has_strip and atoms_list:
strip_payload = []
# Helper to calculate projected coordinates for labels
def get_projected_coords(r_val, p_val):
if project_path:
s_val = (r_val - r_start) * u_r + (p_val - p_start) * u_p
d_val = (r_val - r_start) * v_r + (p_val - p_start) * v_p
return s_val, d_val
return r_val, p_val
# Add Reactant
rx, ry = get_projected_coords(final_r[0], final_p[0])
strip_payload.append({"atoms": atoms_list[0], "x": rx, "y": ry, "label": "R"})
# Add Saddle (Explicit or Heuristic)
if sp_data:
sx, sy = get_projected_coords(sp_data["r"], sp_data["p"])
strip_payload.append(
{"atoms": sp_data["atoms"], "x": sx, "y": sy, "label": "SP"}
)
else:
s_idx = (
(np.argmax(final_z[1:-1]) + 1)
if plot_mode == "energy"
else np.argmin(final_z)
)
sx, sy = get_projected_coords(final_r[s_idx], final_p[s_idx])
strip_payload.append(
{"atoms": atoms_list[s_idx], "x": sx, "y": sy, "label": "SP"}
)
# Add Product
px, py = get_projected_coords(final_r[-1], final_p[-1])
strip_payload.append(
{"atoms": atoms_list[-1], "x": px, "y": py, "label": "P"}
)
# Add intermediate points if 'all' requested
if plot_structures == "all":
for i in range(1, len(atoms_list) - 1):
ix, iy = get_projected_coords(final_r[i], final_p[i])
strip_payload.append(
{"atoms": atoms_list[i], "x": ix, "y": iy, "label": str(i)}
)
# Add additional structures
for add_atoms, add_r, add_p, add_label in additional_atoms_data:
ax_r, ax_p = get_projected_coords(add_r, add_p)
strip_payload.append(
{
"atoms": add_atoms,
"x": ax_r,
"y": ax_p,
"label": add_label,
}
)
strip_payload.sort(key=lambda d: d["x"])
labels = [d["label"] for d in strip_payload]
structs = [d["atoms"] for d in strip_payload]
plot_structure_strip(
ax_strip,
structs,
labels,
zoom=zoom_ratio,
rotation=ase_rotation,
theme_color=active_theme.textcolor,
renderer=strip_renderer,
)
# Annotate Main Plot -- only label R, SP, P (not additional con;
# those are identified by the legend markers instead)
main_plot_texts = []
main_labels = {"R", "SP", "P"}
for d in strip_payload:
if d["label"] not in main_labels:
continue
t = ax.text(
d["x"],
d["y"],
d["label"],
fontsize=11,
fontweight="bold",
color="white",
ha="center",
va="bottom",
zorder=102,
)
t.set_path_effects(
[path_effects.withStroke(linewidth=2.5, foreground="black")]
)
main_plot_texts.append(t)
if main_plot_texts:
adjust_text(
main_plot_texts,
ax=ax,
arrowprops={"arrowstyle": "-", "color": "white", "lw": 1.0},
expand_points=(2.0, 2.0),
force_text=(1.0, 2.0),
force_points=(1.0, 2.0),
)
# Labels
if project_path:
final_xlabel = xlabel or r"Reaction progress $s$ ($\AA$)"
final_ylabel = ylabel or r"Orthogonal deviation $d$ ($\AA$)"
final_title = "Reaction Valley Projection" if title == "NEB Path" else title
else:
final_xlabel = xlabel or r"RMSD from Reactant ($\AA$)"
final_ylabel = ylabel or r"RMSD from Product ($\AA$)"
final_title = "RMSD(R,P) projection" if title == "NEB Path" else title
else:
# --- Profile Plot ---
if source == "hdf5":
if not input_h5:
log.critical("--input-h5 is required when --source hdf5 is used.")
sys.exit(1)
h5_str = str(input_h5)
# Use history final step if available, else result
try:
dats = history_to_profile_dats(h5_str)
data = dats[-1]
except Exception:
data = hdf5_result_to_profile_dat(h5_str)
if atoms_list is None:
atoms_list = result_to_atoms_list(h5_str)
if rc_mode == "index":
data[1] = np.arange(data.shape[1])
elif normalize_rc:
data[1] = data[1] / data[1].max() if data[1].max() > 0 else data[1]
y_col = 2 if plot_mode == "energy" else 4
color = active_theme.highlight_color
plot_energy_path(
ax,
data[1],
data[y_col],
data[3],
color,
1.0,
20,
method=spline_method,
)
elif source == "traj":
# Trajectory source: single extxyz file -> one profile
data = trajectory_to_profile_dat(traj_atoms_list)
if atoms_list is None:
atoms_list = traj_atoms_list
if rc_mode == "index":
data[1] = np.arange(data.shape[1])
elif normalize_rc:
data[1] = data[1] / data[1].max() if data[1].max() > 0 else data[1]
y_col = 2 if plot_mode == "energy" else 4
color = active_theme.highlight_color
plot_energy_path(
ax,
data[1],
data[y_col],
data[3],
color,
1.0,
20,
method=spline_method,
)
if atoms_list and plot_structures != "none":
indices = (
list(range(len(atoms_list)))
if plot_structures == "all"
else sorted(
{
0,
np.argmax(data[y_col][1:-1]) + 1
if plot_mode == "energy"
else np.argmin(data[y_col]),
len(atoms_list) - 1,
}
)
)
for i in indices:
if i == 0:
xybox, rad = draw_reactant[:2], draw_reactant[2]
elif i == len(atoms_list) - 1:
xybox, rad = draw_product[:2], draw_product[2]
else:
xybox, rad = draw_saddle[:2], draw_saddle[2]
if plot_structures == "all":
xybox = (15.0, 60.0 if i % 2 == 0 else -60.0)
rad = 0.1 if i % 2 == 0 else -0.1
plot_structure_inset(
ax,
atoms_list[i],
data[1][i],
data[y_col][i],
xybox,
rad,
zoom=zoom_ratio,
rotation=ase_rotation,
renderer=strip_renderer,
)
else:
# eOn source: multiple .dat files
dat_paths = find_file_paths(input_dat_pattern)
file_paths_to_plot = dat_paths[start:end]
if not file_paths_to_plot:
log.error("No files found in range.")
sys.exit(1)
# Optional: Load RMSD for X-axis
rmsd_rc = None
if rc_mode == "rmsd" and atoms_list:
df_rmsd = compute_profile_rmsd(
atoms_list, cache_file, force_recompute, ira_kmax
)
rmsd_rc = df_rmsd["r"].to_numpy()
# Plot Loop
cm = plt.get_cmap(active_theme.cmap_profile)
color_divisor = (
len(file_paths_to_plot) - 1 if len(file_paths_to_plot) > 1 else 1.0
)
y_col = 2 if plot_mode == "energy" else 4
for idx, fpath in enumerate(file_paths_to_plot):
try:
data = np.loadtxt(fpath, skiprows=1).T
except Exception as ex:
log.error(ex)
continue
# X-Axis Logic
if rc_mode == "rmsd" and rmsd_rc is not None:
if len(rmsd_rc) == data.shape[1]:
data[1] = rmsd_rc
elif rc_mode == "index":
data[1] = np.arange(data.shape[1])
elif normalize_rc:
data[1] = data[1] / data[1].max() if data[1].max() > 0 else data[1]
# Style Logic
is_last = idx == len(file_paths_to_plot) - 1
if highlight_last and is_last:
color, alpha, zorder = active_theme.highlight_color, 1.0, 20
else:
color = cm(idx / color_divisor)
alpha = 1.0 if idx == 0 else 0.5
zorder = 10 if idx == 0 else 5
# Plot
plot_energy_path(
ax,
data[1],
data[y_col],
data[3], # Forces
color,
alpha,
zorder,
method=spline_method,
)
if (
highlight_last
and is_last
and atoms_list
and plot_structures != "none"
):
indices = (
list(range(len(atoms_list)))
if plot_structures == "all"
else sorted(
{
0,
np.argmax(data[y_col][1:-1]) + 1
if plot_mode == "energy"
else np.argmin(data[y_col]),
len(atoms_list) - 1,
}
)
)
for i in indices:
if i == 0:
xybox, rad = draw_reactant[:2], draw_reactant[2]
elif i == len(atoms_list) - 1:
xybox, rad = draw_product[:2], draw_product[2]
else:
xybox, rad = draw_saddle[:2], draw_saddle[2]
if plot_structures == "all":
xybox = (15.0, 60.0 if i % 2 == 0 else -60.0)
rad = 0.1 if i % 2 == 0 else -0.1
# Call library function
plot_structure_inset(
ax,
atoms_list[i],
data[1][i],
data[y_col][i],
xybox,
rad,
zoom=zoom_ratio,
rotation=ase_rotation,
renderer=strip_renderer,
)
# --- Profile Additional Structures ---
if additional_atoms_data and rc_mode == "rmsd":
for i, (add_atoms, add_r, _) in enumerate(additional_atoms_data):
ax.axvline(
add_r,
color=active_theme.gridcolor,
linestyle=":",
linewidth=2,
zorder=90,
)
if plot_structures != "none":
y_span = ax.get_ylim()[1] - ax.get_ylim()[0]
y_pos = ax.get_ylim()[0] + 0.9 * y_span
plot_structure_inset(
ax,
add_atoms,
add_r,
y_pos,
xybox=(
draw_saddle[0] + (i * 15),
draw_saddle[1],
), # Stagger slightly
rad=draw_saddle[2],
zoom=zoom_ratio,
rotation=ase_rotation,
renderer=strip_renderer,
arrow_props={
"arrowstyle": ArrowStyle.Fancy(
head_length=arrow_head_length,
head_width=arrow_head_width,
tail_width=arrow_tail_width,
),
"connectionstyle": f"arc3,rad={rad}",
"linestyle": "-",
"alpha": 0.8,
"color": "black",
"linewidth": 1.2,
},
)
# Profile Labels
final_xlabel = xlabel or (
r"RMSD ($\AA$)" if rc_mode == "rmsd" else r"Reaction Coordinate ($\AA$)"
)
final_ylabel = ylabel or "Relative Energy (eV)"
final_title = title
# Final Aesthetics
ax.set_xlabel(final_xlabel, weight="bold")
ax.set_ylabel(final_ylabel, weight="bold")
ax.set_title(final_title)
ax.minorticks_on()
if plot_type == "landscape" and not aspect_ratio:
ax.set_aspect("equal")
if project_path:
# Force Y-axis to be symmetric and match the X-axis span,
# but expand if additional structures fall outside
x_min, x_max = ax.get_xlim()
x_span = x_max - x_min
half_span = x_span / 2
if additional_atoms_data:
for _, add_r, add_p, _ in additional_atoms_data:
add_d = (add_r - r_start) * v_r + (add_p - p_start) * v_p
half_span = max(half_span, abs(add_d) * 1.15)
ax.set_ylim(-half_span, half_span)
log.info(f"Set symmetric Y-axis limits: [-{half_span:.2f}, {half_span:.2f}]")
if show_legend:
ax.legend(
# In (s,d) space markers can appear anywhere, so let
# matplotlib pick the least-overlapping corner.
# In raw RMSD-RMSD the lower left is always empty.
loc="best" if project_path else "lower left",
borderaxespad=0.5,
frameon=True,
framealpha=1.0,
facecolor="white",
edgecolor="black",
fontsize=int(active_theme.font_size * 0.8),
).set_zorder(101)
plt.tight_layout(pad=0.5)
if ax_strip:
pos_main = ax.get_position()
pos_strip = ax_strip.get_position()
# Force strip to match the main plot's Left and Width exactly,
# and push it down slightly to avoid overlapping the xlabel
strip_y = pos_strip.y0 - 0.02
ax_strip.set_position([pos_main.x0, strip_y, pos_main.width, pos_strip.height])
if output_file:
plt.savefig(output_file, transparent=False, bbox_inches="tight", dpi=dpi)
else:
plt.show()
if __name__ == "__main__":
main()
