Parallel coordinate plot option added

pcmdi_metrics/graphics/parallel_coordinate_plot/parallel_coordinate_plot_lib.py

@@ -49,11 +49,16 @@ def parallel_coordinate_plot(
  arrow_between_lines=False,
  arrow_between_lines_colors=("red", "green"),
  arrow_alpha=1,
+ arrow_width=0.05,
+ arrow_linewidth=0,
+ arrow_head_width=0.15,
+ arrow_head_length=0.15,
  vertical_center=None,
  vertical_center_line=False,
  vertical_center_line_label=None,
  ymax=None,
  ymin=None,
+ debug=False,
 ):
  """
  Parameters
@@ -99,11 +104,15 @@ def parallel_coordinate_plot(
  - `arrow_between_lines`: bool, default=False, place arrows between two lines for models in comparing_models
  - `arrow_between_lines_colors`: tuple or list containing two strings of colors for arrow between the two lines. Default=('red', 'green')
  - `arrow_alpha`: float, default=1, transparency of arrow (faction between 0 to 1)
+ - `arrow_width`: float, default is 0.05, width of arrow
+ - `arrow_linewidth`: float, default is 0, width of arrow edge line
+ - `arrow_head_width`: float, default is 0.15, widht of arrow head
+ - `arrow_head_length`: float, default is 0.15, length of arrow head
  - `vertical_center`: string ("median", "mean")/float/integer, default=None, adjust range of vertical axis to set center of vertical axis as median, mean, or given number
  - `vertical_center_line`: bool, default=False, show median as line
  - `vertical_center_line_label`: str, default=None, label in legend for the horizontal vertical center line. If not given, it will be automatically assigned. It can be turned off by "off"
- - `ymax`: int or float, default=None, specify value of vertical axis top
- - `ymin`: int or float, default=None, specify value of vertical axis bottom
+ - `ymax`: int or float or string ('percentile'), default=None, specify value of vertical axis top. If percentile, 95th percentile or extended for top
+ - `ymin`: int or float or string ('percentile'), default=None, specify value of vertical axis bottom. If percentile, 5th percentile or extended for bottom
 
  Return
  ------
@@ -117,6 +126,7 @@ def parallel_coordinate_plot(
  2023-03 median centered option added
  2023-04 vertical center option diversified (median, mean, or given number)
  2024-03 parameter added for violin plot label
+ 2024-04 parameters added for arrow and option added for ymax/ymin setting
  """
  params = {
  "legend.fontsize": "large",
@@ -143,6 +153,10 @@ def parallel_coordinate_plot(
  ymin=ymin,
  )
 
+ if debug:
+ print("ymins:", ymins)
+ print("ymaxs:", ymaxs)
+
  # Prepare plot
  if N > 20:
  if xtick_labelsize is None:
@@ -317,8 +331,8 @@ def parallel_coordinate_plot(
  alpha=0.5,
  )
 
+ # Add vertical arrows
  if arrow_between_lines:
- # Add vertical arrows
  for xi, yi1, yi2 in zip(x, y1, y2):
  if yi2 > yi1:
  arrow_color = arrow_between_lines_colors[0]
@@ -335,8 +349,11 @@ def parallel_coordinate_plot(
  color=arrow_color,
  length_includes_head=True,
  alpha=arrow_alpha,
- width=0.05,
- head_width=0.15,
+ width=arrow_width,
+ linewidth=arrow_linewidth,
+ head_width=arrow_head_width,
+ head_length=arrow_head_length,
+ zorder=999,
  )
 
  ax.set_xlim(-0.5, N - 0.5)
@@ -421,15 +438,28 @@ def _data_transform(
  # Data to plot
  ys = data # stacked y-axis values
  N = ys.shape[1] # number of vertical axis (i.e., =len(metric_names))
+
  if ymax is None:
  ymaxs = np.nanmax(ys, axis=0) # maximum (ignore nan value)
  else:
- ymaxs = np.repeat(ymax, N)
+ try:
+ if isinstance(ymax, str) and ymax == "percentile":
+ ymaxs = np.nanpercentile(ys, 95, axis=0)
+ else:
+ ymaxs = np.repeat(ymax, N)
+ except ValueError:
+ print(f"Invalid input for ymax: {ymax}")
 
  if ymin is None:
  ymins = np.nanmin(ys, axis=0) # minimum (ignore nan value)
  else:
- ymins = np.repeat(ymin, N)
+ try:
+ if isinstance(ymin, str) and ymin == "percentile":
+ ymins = np.nanpercentile(ys, 5, axis=0)
+ else:
+ ymins = np.repeat(ymin, N)
+ except ValueError:
+ print(f"Invalid input for ymin: {ymin}")
 
  ymeds = np.nanmedian(ys, axis=0) # median
  ymean = np.nanmean(ys, axis=0) # mean
@@ -439,14 +469,17 @@ def _data_transform(
  ymids = ymeds
  elif vertical_center == "mean":
  ymids = ymean
- else:
+ elif isinstance(vertical_center, float) or isinstance(vertical_center, int):
  ymids = np.repeat(vertical_center, N)
+ else:
+ raise ValueError(f"vertical center {vertical_center} unknown.")
+
  for i in range(0, N):
- max_distance_from_middle = max(
+ distance_from_middle = max(
  abs(ymaxs[i] - ymids[i]), abs(ymids[i] - ymins[i])
  )
- ymaxs[i] = ymids[i] + max_distance_from_middle
- ymins[i] = ymids[i] - max_distance_from_middle
+ ymaxs[i] = ymids[i] + distance_from_middle
+ ymins[i] = ymids[i] - distance_from_middle
 
  dys = ymaxs - ymins
  if ymin is None: