diff options
Diffstat (limited to 'skewt.py')
| -rw-r--r-- | skewt.py | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/skewt.py b/skewt.py deleted file mode 100644 index e674d09..0000000 --- a/skewt.py +++ /dev/null @@ -1,118 +0,0 @@ -import matplotlib.gridspec as gridspec -import matplotlib.pyplot as plt - -import numpy as np - -import metpy.calc as mpcalc -from metpy.cbook import get_test_data -from metpy.plots import add_metpy_logo, Hodograph, SkewT -from metpy.units import units - -class Skewt: - def __init__(self, p, T, Td, max_barbs=20, title=None): - self._p = p - self._T = T - self._Td = Td - - self._info_lines = [] - - self.barb_div = int(max(len(p)/max_barbs,1)) - - - # Create a new figure. The dimensions here give a good aspect ratio - self._fig = plt.figure(figsize=(9, 9)) - plt.rcParams["font.family"] = "monospace" - #self._fig = plt.figure() - - if title is not None: - plt.suptitle(title, x=0, y=0, va='bottom', ha='left') - - # Grid for plots - self._gs = gridspec.GridSpec(3, 3) - self._skew = SkewT(self._fig, rotation=45, subplot=self._gs[:, :2]) - - # Plot the data using normal plotting functions, in this case using - # log scaling in Y, as dictated by the typical meteorological plot - self._skew.plot(p, T, 'r') - self._skew.plot(p, Td, 'b') - - plt.xlabel('$T$ $[^o C]$') - plt.ylabel('$p$ $[hPa]$') - - def addWindUV(self, u, v): - self._u = u - self._v = v - - ax = self._fig.add_subplot(self._gs[0, -1]) - h = Hodograph(ax, component_range=max(u + v).magnitude) - h.add_grid(increment=20) - h.plot_colormapped(u, v, self._p) - plt.tight_layout() - plt.xlabel('$m/s$') - plt.ylabel('$m/s$') - - self._skew.plot_barbs(self._p[::self.barb_div], u[::self.barb_div], v[::self.barb_div]) - - def addInfo(self, line): - self._info_lines.append(line) - - def addAnalysis(self, analysis='ccl', shade=False): - f = {'ccl': self._cclAnalysis, 'lcl': self._lclAnalysis} - - lvl, parcel = f[analysis]() - - self._skew.plot(self._p, parcel, 'y') - self._skew.plot(lvl[0], lvl[1], 'o', markerfacecolor='red', linewidth=1) - - # TODO why exception on cape_cin()? - # ValueError: zero-size array to reduction operation minimum which has no identity - # https://github.com/Unidata/MetPy/pull/3132 - try: - cape, cin = mpcalc.cape_cin(self._p, self._T, self._Td, parcel, which_el='top') - self.addInfo(f'CAPE {int(cape.magnitude)} $J/kg$ CIN {int(cin.magnitude)} $J/kg$') - except ValueError: - print('CAPE/CIN Failed with ValueError') - self.addInfo('CAPE #### CIN ####') - - if shade: - self._skew.shade_cape(self._p,self._T,parcel) - self._skew.shade_cin(self._p,self._T,parcel) - - def _cclAnalysis(self): - #p = np.arange(max(self._p).magnitude, min(self._p).magnitude, -50) * units.hPa - - ccl = mpcalc.ccl(self._p,self._T,self._Td) - ccl_ground=mpcalc.dry_lapse(self._p[:1], ccl[1], ccl[0]) - ccl_ground_parcel= mpcalc.parcel_profile(self._p, ccl_ground[0], self._Td[0]) - - return (ccl, ccl_ground_parcel) - - def _lclAnalysis(self): - ground_parcel= mpcalc.parcel_profile(self._p, self._T[0], self._Td[0]) - lcl = mpcalc.lcl(self._p[0],self._T[0],self._Td[0]) - - return (lcl, ground_parcel) - - def _buildInfoBox(self): - ax = self._fig.add_subplot(self._gs[1,-1]) - ax.text(0, 0, '\n'.join(self._info_lines), ha='left', va='center', - size=10, fontfamily='monospace') - ax.axis("off") - - def plot(self, filename=None): - self._buildInfoBox() - - # Add the relevant special lines - #self._skew.ax.set_ylim(max(self._p), min(self._p)) - self._skew.ax.set_ylim(1000, 100) - self._skew.plot_dry_adiabats(linewidth=1) - self._skew.plot_moist_adiabats(linewidth=1) - self._skew.plot_mixing_lines(linewidth=1) - - # Good bounds for aspect ratio - self._skew.ax.set_xlim(-30, 40) - - if filename is not None: - plt.savefig(filename) - else: - plt.show() |