src/visu/__main__.py: add parameter ylim

src/visu/__main__.py

@@ -10,7 +10,7 @@ gene regions from ChIP-seq experiment.
 from .figure_maker import create_figure
 import lazyparser as lp
 from pathlib import Path
-from typing import List
+from typing import List, Optional
 
 
 @lp.parse(design='file', region_beds='file',
@@ -21,7 +21,7 @@ def launcher(design: str, bw_folder: str, region_beds: List[str],
              figure_type: str = 'metagene', norm: str = 'None',
              show_replicate: str = 'y', environment: List[int] = (0, 0),
              border_names: List[str] = ('', ''),
-             output: str = '.') -> None:
+             output: str = '.', ylim: List[float] = (None, None)) -> None:
     """
     Create A metagene or a barplot figure from bigwig file on regions defined \
     in the bed file provided with 'region_bed' parameter.
@@ -47,7 +47,11 @@ def launcher(design: str, bw_folder: str, region_beds: List[str],
     the number of bin used to represent those surrounding regions.
     :param border_names: The name of the borders
     :param output: Folder where the results will be created
+    :param ylim: The y-axis range (default None)
     """
+    if ylim[0] is not None and (len(ylim) != 2 or ylim[0] >= ylim[1]):
+        raise ValueError("The ylim must have two values and the first value "
+                         "must be lower to the second value")
     if environment[0] < 0 or environment[1] < 0 or \
             environment[0] < environment[1]:
         raise ValueError(f"The two values given with --environment must "
@@ -62,7 +66,7 @@ def launcher(design: str, bw_folder: str, region_beds: List[str],
     reg_beds = [Path(p) for p in region_beds]
     create_figure(Path(design), Path(bw_folder), reg_beds,
                   region_names, nb_bin, figure_type, norm, show_rep,
-                  environment, border_names, Path(output))
+                  environment, border_names, Path(output), ylim)
 
 
 launcher()