wradlib Documentation - Bitbucket

wradlib Documentation, Release 0.1.1
3.15 Visualisation
Standard plotting and mapping procedures
polar_plot
rhi_plot
Grid2Basemap
Plots data from a polar grid.
Returns figure and pylab object of plotted data from a polar grid as an RHI (Range Height Indicator).
Plot gridded data on a background map
3.15.1 wradlib.vis.polar_plot
wradlib.vis.polar_plot(data, title=’‘, unit=’‘, saveto=’‘, fig=None, axpos=111, R=1.0, theta0=0,
colormap=’jet’, classes=None, extend=’neither’, **kwargs)
Plots data from a polar grid.
The data must be an array of shape (number of azimuth angles, number of range bins). The azimuth angle of
zero corresponds to the north, the angles are counted clock-wise forward.
additional kwargs will be passed to the pcolormesh routine displaying the data.
Parameters data : 2-d array
polar grid data to be plotted 1st dimension must be azimuth angles, 2nd must be ranges!
title : string
a title of the plot
unit : string
the unit of the data which is plotted
saveto : string - path of the file in which the figure should be saved
if string is empty, no figure will be saved and the plot will be sent to screen
fig : matplotlib axis object
if None, a new matplotlib figure will be created, otherwise we plot on ax
axpos : an integer or a string
R : float
correponds to the positional argument of matplotlib.figure.add_subplot
maximum range
theta0 : integer
azimuth angle which corresponds to the first slice of the dataset (normally corresponds
to 0)
colormap : string
choose between the colormaps “jet” (per default) and “spectral”
classes : sequence of numerical values
class boundaries for plotting
extend : string
86 Chapter 3. Library Reference