import argparse import configparser import logging import pathlib import numpy as np from scipy import interpolate import matplotlib.pyplot as plt from .lambert import Lambert parser = argparse.ArgumentParser(description="Pre-process bathymetry") parser.add_argument("-v", "--verbose", action="count", default=0) parser.add_argument("-c", "--config", default="config.ini") args = parser.parse_args() logging.basicConfig(level=max((10, 20 - 10 * args.verbose))) log = logging.getLogger("bathy") log.info("Starting bathymetry pre-processing") config = configparser.ConfigParser() config.read(args.config) inp_root = pathlib.Path(config.get("inp", "root")) out_root = pathlib.Path(config.get("out", "root")) bathy_inp = out_root.joinpath(config.get("out", "sub")) hires_inp = inp_root.joinpath(config.get("inp", "hires")) hstru_inp = inp_root.joinpath(config.get("inp", "hstru")) poro_inp = inp_root.joinpath(config.get("inp", "poro")) psize_inp = inp_root.joinpath(config.get("inp", "psize")) bathy_out = inp_root.joinpath(config.get("out", "out")) log.info(f"Loading bathymetry from {bathy_inp}") bathy_curvi = np.load(bathy_inp) projection = Lambert() bathy = np.stack( ( *projection.cartesian(bathy_curvi[:, 0], bathy_curvi[:, 1]), bathy_curvi[:, 2], ), axis=1, ) log.debug(f"Cartesian bathy: {bathy}") artha_curvi = np.array( (config.getfloat("artha", "lon"), config.getfloat("artha", "lat")) ) buoy_curvi = np.array((config.getfloat("buoy", "lon"), config.getfloat("buoy", "lat"))) artha = np.asarray(projection.cartesian(*artha_curvi)) buoy = np.asarray(projection.cartesian(*buoy_curvi)) D = np.diff(np.stack((artha, buoy)), axis=0) x = np.arange( config.getfloat("out", "left", fallback=0), np.sqrt((D**2).sum()) + config.getfloat("out", "right", fallback=0), config.getfloat("out", "step", fallback=1), ) theta = np.angle(D.dot((1, 1j))) log.info(f"N points: {bathy.size:e}") S = bathy[:, 0].ptp() * bathy[:, 1].ptp() log.info(f"Surface: {S*1e-6:.2f}km^2") res = np.sqrt(S / bathy.size) log.info(f"Resolution: {res:.2f}m") coords = artha + (x * np.stack((np.cos(theta), np.sin(theta)))).T log.info("Interpolating bathymetry in 1D") z = interpolate.griddata(bathy[:, :2], bathy[:, 2], coords) log.debug(f"z: {z}") _hires = np.loadtxt(hires_inp)[::-1] bathy_hires = np.stack( ( np.linspace( 0, (_hires.size - 1) * config.getfloat("inp", "hires_step"), _hires.size, ), _hires, ), axis=1, ) del _hires log.debug(f"Bathy hires: {bathy_hires}") z_cr = 5 hires_crossing = np.diff(np.signbit(bathy_hires[:, 1] - z_cr)).nonzero()[0][-1] log.debug(f"Hires crossing: {hires_crossing}") z_crossing = np.diff(np.signbit(z - z_cr)).nonzero()[0][-1] log.debug(f"Z crossing: {z_crossing}") x_min_hires = x[z_crossing] + (bathy_hires[:, 0].min() - bathy_hires[hires_crossing, 0]) x_max_hires = x[z_crossing] + (bathy_hires[:, 0].max() - bathy_hires[hires_crossing, 0]) log.debug(f"Replacing range: [{x_min_hires},{x_max_hires}]") hstru = np.zeros(z.shape) poro = np.zeros(z.shape) psize = np.zeros(z.shape) if config.getboolean("out", "no_breakwater", fallback=False): flt_x = np.abs(x) < 250 z[flt_x] = np.linspace(z[flt_x][0], z[flt_x][-1], flt_x.sum()) else: flt_x = (x > x_min_hires) & (x < x_max_hires) z[flt_x] = interpolate.griddata( (bathy_hires[:, 0],), bathy_hires[:, 1], (x[flt_x] - x[z_crossing] + bathy_hires[hires_crossing, 0]), ) hstru_in = np.loadtxt(hstru_inp)[::-1] hstru[flt_x] = interpolate.griddata( (bathy_hires[:, 0],), hstru_in, (x[flt_x] - x[z_crossing] + bathy_hires[hires_crossing, 0]), ) poro_in = np.loadtxt(poro_inp)[::-1] poro[flt_x] = interpolate.griddata( (bathy_hires[:, 0],), poro_in, (x[flt_x] - x[z_crossing] + bathy_hires[hires_crossing, 0]), ) psize_in = np.loadtxt(psize_inp)[::-1] psize[flt_x] = interpolate.griddata( (bathy_hires[:, 0],), psize_in, (x[flt_x] - x[z_crossing] + bathy_hires[hires_crossing, 0]), ) np.savetxt(out_root.joinpath("bathy.dat"), z[::-1], newline=" ") np.savetxt(out_root.joinpath("hstru.dat"), hstru[::-1], newline=" ") np.savetxt(out_root.joinpath("poro.dat"), poro[::-1], newline=" ") np.savetxt(out_root.joinpath("psize.dat"), psize[::-1], newline=" ") fig, ax = plt.subplots(figsize=(16 / 2.54, 2 / 3 * 10 / 2.54), constrained_layout=True) ax.plot(-x, z, color="k") ax.fill_between(-x, z + hstru, z, color="k", alpha=0.2) #ax.set_title(f"N={z.size-1}, x=[{-x.max()};{-x.min()}]") ax.set(ylim=(-40, 15)) ax.set(xlabel="x (m)", ylabel="z (m)") ax.autoscale(True, "x", True) ax.grid() fig.savefig(out_root.joinpath("bathy.pdf"))