better validation and errors

dispersion_app.py

@@ -11,16 +11,16 @@ import numpy as np
 import scgenerator as sc
 import tomli
 from customfunc.app import PlotApp
-from pydantic import BaseModel
+from pydantic import BaseModel, ValidationError, confloat
 
 DEFAULT_CONFIG_FILE = "config.toml"
 
 
 class Config(BaseModel):
-    wl_min: float
-    wl_max: float
-    wl_pump: float
-    rep_rate: float
+    wl_min: confloat(ge=100, le=1000)
+    wl_max: confloat(ge=500, le=6000)
+    wl_pump: confloat(ge=200, le=6000)
+    rep_rate: confloat(gt=0)
     gas: str
 
     @classmethod
@@ -29,7 +29,12 @@ class Config(BaseModel):
         with open(config_file, "rb") as file:
             d = tomli.load(file)
         d = cls.default() | d
+        try:
             return cls(**d)
+        except ValidationError as e:
+            s = f"invalid input in config file {config_file}:\n{e}"
+            print(s)
+            sys.exit(1)
 
     @classmethod
     def default(cls) -> dict[str, Any]:
@@ -102,12 +107,12 @@ def app(config_file: os.PathLike | None = None):
 
     with PlotApp(
         f"Dispersion design with {config.gas.title()}",
-        wall_thickness_um=np.geomspace(0.01, 10),
         core_diameter_um=np.linspace(50, 300),
         pressure_mbar=np.geomspace(1, 2000),
+        wall_thickness_um=np.geomspace(0.01, 10),
         n_tubes=np.arange(6, 16),
         gap_um=np.linspace(1, 15),
-        t_fwhm_fs=np.linspace(10, 200),
+        t_fwhm_fs=np.linspace(10, 200, 96),
     ) as app:
         # initial setup
         app[0].horizontal_line("reference", 0, color="gray")
@@ -211,7 +216,7 @@ def app(config_file: os.PathLike | None = None):
                 )
 
             zdw = lim.wl_zero_disp * 1e9
-            app[0].set_line_data("zdw", [zdw, zdw], [0, 1])
+            app[0].set_line_data("zdw", [zdw, zdw], [-3, 3])
             app[0].set_line_name("zdw", f"ZDW = {zdw:.0f}nm")