General idea Your question seems to have 2 very different halves: one about omitting small contours, and another one about smoothing the contour lines. The latter is simpler, since I can’t really think of anything else other than decreasing the resolution of your contour() call, just like you said. As for removing a few contour … Read more
In case you create vector graphics, have you tried this (taken from http://matplotlib.org/api/pyplot_api.html?highlight=colorbar#matplotlib.pyplot.colorbar): “It is known that some vector graphics viewer (svg and pdf) renders white gaps between segments of the colorbar. This is due to bugs in the viewers not matplotlib. As a workaround the colorbar can be rendered with overlapping segments: cbar = … Read more
You will need the python imaging library (PIL) installed. (See here https://pypi.python.org/pypi/PIL). See these answers for examples of ways to install PIL: answer 1, answer 2 Right, with that installed, the following code should do what you ask for: import matplotlib.pyplot as plt import matplotlib.ticker as plticker try: from PIL import Image except ImportError: import … Read more
For questions 2-4, you have to have GEOS installed on your system. If you have homebrew you can do the following: brew install geos Install homebrew here if you don’t have it: Link
I was in the same situation until a minute ago, installing it through this made the trick: sudo apt-get install libgeos-3.5.0 sudo apt-get install libgeos-dev pip install https://github.com/matplotlib/basemap/archive/master.zip
As has already been said by @unutbu, Thomas’ post here is exactly what you are after. Should you want to do this with Cartopy, the corresponding code (in v0.7) can be adapted from http://scitools.org.uk/cartopy/docs/latest/tutorials/using_the_shapereader.html slightly: import cartopy.crs as ccrs import matplotlib.pyplot as plt import cartopy.io.shapereader as shpreader import itertools import numpy as np shapename=”admin_0_countries” countries_shp … Read more
For Windows 10 with Anaconda + Python 3.71 (and I’m sure other Python 3 versions and Windows 7/8), you can tell Basemap where Proj4’s “epsg” file is to succeed. I don’t have an “environment” or whatever because it’s too much work to figure out – so I didn’t have an anaconda\share\proj area (as far as … Read more
There’s method in matplotlib.basemap: is_land(xpt, ypt) It returns True if the given x,y point (in projection coordinates) is over land, False otherwise. The definition of land is based upon the GSHHS coastline polygons associated with the class instance. Points over lakes inside land regions are not counted as land points. For more information, see here.