slice3

Axes3DGL.slice(*args, **kwargs):

Volume slice planes

Parameters:

  • x – (array_like) Optional. X coordinate array.

  • y – (array_like) Optional. Y coordinate array.

  • z – (array_like) Optional. Z coordinate array.

  • data – (array_like) 3D data array.

  • xslice – (list) X slice locations.

  • yslice – (list) Y slice locations.

  • zslice – (list) Z slice locations.

  • cmap – (string) Color map string.

Returns:

Slice plane graphics.

Example of 3D slice plot

X=Y=Z = arange(-2, 2.1, 0.2)
X,Y,Z = meshgrid(X, Y, Z)
V = X*exp(-X**2-Y**2-Z**2)

xslice = [-1.2,0.8,2]
yslice = [0]
zslice = 0

slice3(X, Y, Z, V, facecolor='interp', xslice=xslice, yslice=yslice, zslice=zslice)
colorbar()
../../../../_images/slice_3d.png

Vertical cross section slice with start and end x/y points

X=Y=Z = arange(-2, 2.1, 0.2)
X,Y,Z = meshgrid(X, Y, Z)
V = X*exp(-X**2-Y**2-Z**2)

slice3(X, Y, Z, V, xslice=0, yslice=0, zslice=0)
slice3(X, Y, Z, V, xyslice=[-2,-2,2,2])
slice3(X, Y, Z, V, xyslice=[-2,2,2,-2])
colorbar()
xlim(-2, 2)
ylim(-2, 2)
../../../../_images/slice3_xyslice.png

3D slice plot of dust concentration

#Set date
sdate = datetime.datetime(2019, 4, 15, 0)

#Set directory
datadir = 'D:/Temp/mm5'

#Read data
fn = os.path.join(datadir, 'WMO_SDS-WAS_Asian_Center_Model_Forecasting_CUACE-DUST_CMA_'+ sdate.strftime('%Y%m%d%H') + '.nc')
f = addfile(fn)
st = f.gettime(0)
t = 20
dust = f['CONC_DUST'][t,:,:,:]
levels = dust.dimvalue(0)
dust[dust<5] = 0
height = meteolib.pressure_to_height_std(levels)
lat = dust.dimvalue(1)
lon = dust.dimvalue(2)

#Plot
xslice = [80,120]
yslice = [40]
zslice = [4000]
ax = axes3d()
ax.set_rotation(328)
ax.set_elevation(-41)
grid(False)
lighting()
geoshow('coastline')
levs = [1,10,20,50,100,200,300,400,500]
cols = makecolors(len(levs) + 1, cmap='MPL_rainbow')
cols[0] = [220,220,220,220]
slice3(lon, lat, height, dust, levs, colors=cols, facecolor='interp',
    edgecolor=None, xslice=xslice, yslice=yslice, zslice=zslice)
colorbar(aspect=30)
xlim(65, 155)
xlabel('Longitude')
ylim(15, 65)
ylabel('Latitude')
zlim(0, 15000)
zlabel('Height (m)')
tt = st + datetime.timedelta(hours=t*3)
title('Dust concentration slices ({})'.format(tt.strftime('%Y-%m-%d %H:00')))
../../../../_images/slice3_dust.png