假设我有一张带有行星圆柱图的图像,请说以下其中之一:
http://www.johnstonsarchive.net/spaceart/cylmaps.html
我想将其绘制在3D球体上以恢复地球的原始形状。
有没有办法使用类似matplotlib,mayavi,basemap或类似的Python包来做到这一点?
更新 :这是使用Cartopy的新版本,因为底图是EOL。以下是原始答案。
import matplotlib.pyplot as plt import cartopy.crs as ccrs img = plt.imread("/tmp/venuscyl4.tif") plt.figure(figsize=(3, 3)) ax = plt.axes(projection=ccrs.Orthographic(-10, 45)) ax.gridlines(color='black', linestyle='dotted') ax.imshow(img, origin="upper", extent=(-180, 180, -90, 90), transform=ccrs.PlateCarree()) # Important plt.show()
多亏了Raphael Roth的回答,我终于找到了我想要的东西:底图方法warpimage。
这是一个非常小的例子。使用此金星柱形图,并根据菜谱的简单示例:
from mpl_toolkits.basemap import Basemap import matplotlib.pyplot as plt import numpy as np # set up orthographic map projection with # perspective of satellite looking down at 50N, 100W. # use low resolution coastlines. # don't plot features that are smaller than 1000 square km. bmap = Basemap(projection='ortho', lat_0 = 50, lon_0 = -100, resolution = 'l', area_thresh = 1000.) # plot surface bmap.warpimage(image='venuscyl4.jpg') # draw the edge of the map projection region (the projection limb) bmap.drawmapboundary() # draw lat/lon grid lines every 30 degrees. bmap.drawmeridians(np.arange(0, 360, 30)) bmap.drawparallels(np.arange(-90, 90, 30)) plt.show()