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# More Info: http://davydany.com/post/32287214449/matplotlibs-basemap-plotting-a-list-of-latitude | |
def show_map(self, a): | |
# 'a' is of the format [(lats, lons, data), (lats, lons, data)... (lats, lons, data)] | |
lats = [ x[0] for x in a ] | |
lons = [ x[1] for x in a ] | |
data = [ x[2] for x in a ] | |
lat_min = min(lats) | |
lat_max = max(lats) | |
lon_min = min(lons) | |
lon_max = max(lons) | |
data_min = min(data) | |
data_max = max(data) | |
spatial_resolution = 0.5 | |
fig = plt.figure() | |
x = np.array(lons) | |
y = np.array(lats) | |
z = np.array(data) | |
xinum = (lon_max - lon_min) / spatial_resolution | |
yinum = (lat_max - lat_min) / spatial_resolution | |
xi = np.linspace(lon_min, lon_max + spatial_resolution, xinum) # same as [lon_min:spatial_resolution:lon_max] in matlab | |
yi = np.linspace(lat_min, lat_max + spatial_resolution, yinum) # same as [lat_min:spatial_resolution:lat_max] in matlab | |
xi, yi = np.meshgrid(xi, yi) | |
zi = griddata(x, y, z, xi, yi) | |
m = Basemap( | |
projection = 'merc', | |
llcrnrlat=lat_min, urcrnrlat=lat_max, | |
llcrnrlon=lon_min, urcrnrlon=lon_max, | |
rsphere=6371200., resolution='l', area_thresh=10000 | |
) | |
m.drawcoastlines() | |
m.drawstates() | |
m.drawcountries() | |
lat, lon = m.makegrid(zi.shape[1], zi.shape[0]) | |
x,y = m(lat, lon) | |
m.contourf(x, y, zi) | |
plt.show() |
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