Improve rssa cyl plots

src/f4enix/output/rssa/rssa.py

@@ -1,6 +1,4 @@
 """This module is related to the parsing of D1S-UNED meshinfo files."""
-
-from collections.abc import Sequence
 from pathlib import Path
 
 import polars as pl
@@ -140,9 +138,6 @@ def histories(self) -> pl.Series:
         """Returns the history numbers of the tracks."""
         return self.tracks["a"]
 
-    def get_energy_spectra(self, energy_bins: Sequence[float]) -> pl.DataFrame:
-        raise NotImplementedError()
-
     def plot_plane(self) -> RSSAPlot:
         """Returns an instance of RSSAPlot to plot data assuming an XY plane."""
         return RSSAPlot(self.tracks, self.parameters)

src/f4enix/output/rssa/rssa_plotting.py

@@ -78,12 +78,12 @@ def calculate_perimeter_positions(self) -> None:
         """
         It adds a new column to the tracks DataFrame called 'perimeter_pos' that takes
         the X and Y coordinates and calculates the position as a perimeter coordinate.
-        The perimeter position is calculated as theta * r, where theta is the angle in
+        The perimeter position is calculated as -theta * r, where theta is the angle in
         radians and r is the radius of each track.
         """
         radius = (pl.col("x").pow(2) + pl.col("y").pow(2)).sqrt()
         thetas = pl.arctan2(pl.col("y"), pl.col("x"))
-        perimeter_pos = (thetas * radius).alias("perimeter_pos")
+        perimeter_pos = (thetas * radius * -1).alias("perimeter_pos")
         self.tracks = self.tracks.with_columns(perimeter_pos)
 
     @abstractmethod