Remove dt from config

swash/config-nb.ini

@@ -12,6 +12,5 @@ inp=inp_post/spec_nb
 compare=inp_post_nb
 out=out_post
 #nperseg=1024
-dt=0.25
 x0=-1250
 t0=180

swash/config.ini

@@ -12,6 +12,5 @@ inp=inp_post/spec
 compare=inp_post_nb
 out=out_post
 #nperseg=1024
-dt=0.25
 x0=-1250
 t0=180

swash/processing/post.py

@@ -38,7 +38,7 @@ x0 = config.getint("post", "x0")
 arg_x0 = np.abs(x - x0).argmin()
 t0 = config.getfloat("post", "t0")
 arg_t0 = np.abs(t - t0).argmin()
-dt = config.getfloat("post", "dt")
+dt = np.diff(t).mean()
 f = 1 / dt
 nperseg = config.getint("post", "nperseg", fallback=None)
 log.info(f"Computing reflection coefficient at x={x0}")