matplotlib-basemap

问题 I'm creating a tool for geospatial visualization of economic data using Matplotlib and Basemap . However, right now, the only way I thought of that gives me enough flexibility is to create a new basemap every time I want to change the data. Here are the relevant parts of the code I'm using: class WorldMapCanvas(FigureCanvas): def __init__(self,data,country_data): self.text_objects = {} self.figure = Figure() self.canvas = FigureCanvas(self.figure) self.axes = self.figure.add_subplot(111) self

问题 I'm creating a tool for geospatial visualization of economic data using Matplotlib and Basemap . However, right now, the only way I thought of that gives me enough flexibility is to create a new basemap every time I want to change the data. Here are the relevant parts of the code I'm using: class WorldMapCanvas(FigureCanvas): def __init__(self,data,country_data): self.text_objects = {} self.figure = Figure() self.canvas = FigureCanvas(self.figure) self.axes = self.figure.add_subplot(111) self

问题 I have downloaded some gebco bathymetry data as a netCDF file. I would like to plot it with python-basemap. I have tried, import netCDF4 from mpl_toolkits.basemap import Basemap # Load data dataset = netCDF4.Dataset('/home/david/Desktop/GEBCO/gebco_08_-30_45_5_65.nc') # Extract variables x = dataset.variables['x_range'] y = dataset.variables['y_range'] spacing = dataset.variables['spacing'] # Data limits nx = (x[-1]-x[0])/spacing[0] # num pts in x-dir ny = (y[-1]-y[0])/spacing[1] # num pts in

问题 I am searching way to fill polygons of a shapefile based on a value. So far from basemap tutorial (http://basemaptutorial.readthedocs.io/en/latest/shapefile.html) i 've found how to fill the polygons with a specific color. import matplotlib.pyplot as plt import pypyodbc from mpl_toolkits.basemap import Basemap from matplotlib.patches import Polygon from matplotlib.collections import PatchCollection from matplotlib.patches import PathPatch import numpy as np fig= plt.figure() ax= fig.add

问题 I'm using basemap to plot some points on a map, and I want to add any kind of animation to it. It could literally serve no purpose at all, as long as it is an animation it would be nice. This is what I currently have to make the map, from mpl_toolkits.basemap import Basemap import matplotlib.pyplot as plt import numpy as np import matplotlib.animation as animation map = Basemap(projection='robin', resolution = 'l', area_thresh = 1000.0, lat_0=0, lon_0=-130) map.drawcoastlines() map

问题 I want to know how to create a popup box in a basemap plot. When I hover my mouse over a location , it should trigger the popup box. Is this possible? 回答1: Yes it is possible thanks to matplotlib's event handling framework. I couldn't find an already written example which does what you are particularly interested in so I wrote one (which I will put forward for inclusion in the matplotlib source). I would read http://matplotlib.sourceforge.net/users/event_handling.html thoroughly to best

问题 Is there a way in matplotlib and Python to return the value/label clicked in a pie chart. For example if user clicks on sliver A of pie chart, return value A. If user clicks on sliver B of B pie chart, return value B. 回答1: from matplotlib import pyplot as plt # make a square figure and axes plt.figure(figsize=(6,6)) ax = plt.axes([0.1, 0.1, 0.8, 0.8]) labels = 'Frogs', 'Hogs', 'Dogs', 'Logs' fracs = [15,30,45, 10] explode=(0, 0.05, 0, 0) p = plt.pie(fracs, explode=explode, labels=labels,

问题 I am trying to overlay a quiver plot of wind field on a map with a pcolormesh of the windspeed. from mpl_toolkits.basemap import Basemap from pylab import * lonMin = 115.5 lonMax = 124.5 latMin = 10 latMax = 20 res = 0.25 lonGrid = arange(lonMin, lonMax, res) latGrid = arange(latMin, latMax, res) lonGrid,latGrid = meshgrid(lonGrid,latGrid) u = random(lonGrid.shape) v = random(lonGrid.shape) m = Basemap(llcrnrlon=lonMin,llcrnrlat=latMin,urcrnrlon=lonMax,urcrnrlat=latMax, resolution = 'i') m

问题 In recent days, I have visualized my ncep reanalysis data using Basemap. It is found that only half data appears when using Basemap(projection="cyl",lon_0=0.0,lat_0=0.0, resolution="c") , but the whole data occurs when using Basemap(projection="cyl",lon_0=180.0,lat_0=0.0, resolution="c") . Furthermore, I changes the projection, but still set the central longitude to 0 degree like Basemap(projection="hammer",lon_0=0.0,lat_0=0.0, resolution="c"), but the whole data. The whole data occurs. what

问题 I typed this up last night then as I was about to submit it I figured it out. Submitting in case anyone else needs it. I am plotting meteorological values for every hour for multiple days on basemap. I want to keep the same values of the colorbar at all times for each map. Lets say from 0-10 for each plot. Sometimes the values are all very close to zero and others they range from 0-10. for file in files: ncfile = Dataset(file) cbarticks=np.arange(0.0,10.0,0.5) bm.contour(x, y, to_np