title: Vertical wind visualization in vector form
body: <p>I have vertical wind data in masked array format, which I want to plot it into vector form.</p>
  <pre><code>masked_array(
    data=[[-4.06932000e-04, -4.06932000e-04, -5.70601827e-04, ...,
           -2.43262173e-04, -2.43262173e-04, -4.06932000e-04],
          [-1.38895096e-03, -8.97941481e-04, -5.70601827e-04, ...,
           -4.06932000e-04, -7.95923461e-05,  2.47747308e-04],
          [ 2.47747308e-04,  5.75086961e-04,  1.22976627e-03, ...,
            7.38756788e-04,  4.11417135e-04,  8.40774808e-05],
          ...,
          [ 5.50771393e-02,  3.57640997e-02,  5.21310824e-02, ...,
           -4.98352197e-02, -2.95401612e-02, -3.90330111e-02],
          [ 6.03145738e-02,  3.28180429e-02,  4.96760350e-02, ...,
           -2.65941043e-02, -2.38117172e-02, -3.33045672e-02],
          [ 5.75321867e-02,  3.34727222e-02,  4.95123652e-02, ...,
            5.97619125e-03,  5.32151194e-03,  2.53912488e-03]],
    mask=False,
    fill_value=1e+20)
  </code></pre>
  <p>I have tried in the following way:</p>
  <pre><code>import matplotlib.pyplot as plt
  import numpy as np
  from netCDF4 import Dataset as ncfile
  import cartopy.crs as ccrs
  
  nc = ncfile('data.nc')
  
  lats = nc.variables['latitude'][:]
  p = nc.variables['level'][:]
  
  w = (nc.variables['w'][0,:,:,95])
  
  
  fig = plt.figure(figsize=(11, 8))
  ax1 = fig.add_subplot(111)
  
  ax1.axis([-10, 40, 1000, 200])
  ax1.yaxis.get_ticklocs(minor=True)     
  ax1.minorticks_on()
  ax1.tick_params(direction='out', which='both')
  ax1.set_xlabel('Latitude (degrees)', fontsize=12, fontweight='bold')
  ax1.set_ylabel('Pressure (mb)', fontsize=12, fontweight='bold')
  ax1.set_xticks(np.arange(-10, 40, 4))
  ax1.set_yticks([1000, 900, 800, 700, 600, 500, 400, 300, 200])
  
  #-- vertical wind vector
  plt.quiver(lats, p, w, w, scale=10)
  
  plt.savefig('sample.png')
  </code></pre>
  <p>It displays in the following way, but I want it into <strong>equally spaced</strong> or **stream ** form.</p>
  <p><a href="https://i.stack.imgur.com/9aJgE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9aJgE.png" alt="enter image description here" /></a></p>