import os
import sys
import numpy as np
import matplotlib.pyplot as plt
from raster_axes import RasterAxes
from astropy.visualization import LogStretch
from astropy.visualization.mpl_normalize import ImageNormalize
norm = ImageNormalize(vmin=0., vmax=1000, stretch=LogStretch())
fig = plt.figure()
ax = RasterAxes(fig, [0.1, 0.1, 0.8, 0.8], aspect='equal')
fig.add_axes(ax)
xmin = -8240227.037
ymin = 4974203.152
xmax = -8231283.905
ymax = 4979238.441
if not os.path.exists('taxi.npz'):
print("You need to run the convert_nyc.py script first")
sys.exit(1)
arrays = np.load('taxi.npz')
x = arrays['x']
y = arrays['y']
import numpy as np import matplotlib.pyplot as plt from raster_axes import RasterAxes fig = plt.figure() ax = RasterAxes(fig, [0.1, 0.1, 0.8, 0.8]) fig.add_axes(ax) n = 1000000 x = np.random.normal(0.5, 0.3, n) y = np.random.normal(0.5, 0.3, n) ax.rasterized_scatter(x, y, color='red') n = 1000000 x = np.random.normal(0.5, 0.2, n) y = np.random.normal(0.5, 0.2, n) ax.rasterized_scatter(x, y, color='green') fig.canvas.draw()
import numpy as np import matplotlib.pyplot as plt from raster_axes import RasterAxes from astropy.visualization import LogStretch from astropy.visualization.mpl_normalize import ImageNormalize norm = ImageNormalize(vmin=0., vmax=1000, stretch=LogStretch()) fig = plt.figure() ax = RasterAxes(fig, [0.1, 0.1, 0.8, 0.8]) fig.add_axes(ax) n = 10000000 x = np.random.normal(0.5, 0.3, n) y = np.random.normal(0.5, 0.3, n) ax.rasterized_scatter(x, y, colormap='viridis', norm=norm) plt.show()
