如何将plt中的x,y更改为cartopy中的lon,lat?
当我单击地图中的某个点并获取 x,y 时,我想将 x,y 更改为 lon,lat (黄色标记下方的图片)。 我怎样才能改变它?请帮助我...
import cartopy.crs as ccrs
import matplotlib.pyplot as plt
import numpy as np
import cartopy
def mouse_click(event):
x, y = event.xdata, event.ydata
print(x, y)
proj = ccrs.LambertConformal(central_longitude=125, central_latitude=35, false_easting=400000,false_northing=400000,
standard_parallels=(46, 49))
fig = plt.figure(figsize=(16.535433, 11.692913))
ax = fig.add_subplot(1,1,1, projection=proj)
ax.set_extent((79, 156, 10, 66))
gl = ax.gridlines(crs=ccrs.PlateCarree(), draw_labels=False, linewidth=0.2,color='black', alpha=0.5,
linestyle=(3, (20, 5)), xlocs=np.arange(-180, 200, 10), x_inline=False, y_inline=False)
#xlabel_style = {'rotation': 0},ylabel_style = {'rotation': 0})
ax.coastlines(resolution='50m', alpha=1, linewidth=0.5)
ax.add_feature(cartopy.feature.BORDERS, alpha=1,linewidth=0.5)
ax.add_feature(cartopy.feature.LAKES, alpha=0.4)
plt.connect('button_press_event', mouse_click)
plt.show()
我试图找到它,但很难理解。
I want to change x, y to lon, lat (Picture below yellow marker) when I click some point in map and get x, y.
How can I change it? Help me please...
import cartopy.crs as ccrs
import matplotlib.pyplot as plt
import numpy as np
import cartopy
def mouse_click(event):
x, y = event.xdata, event.ydata
print(x, y)
proj = ccrs.LambertConformal(central_longitude=125, central_latitude=35, false_easting=400000,false_northing=400000,
standard_parallels=(46, 49))
fig = plt.figure(figsize=(16.535433, 11.692913))
ax = fig.add_subplot(1,1,1, projection=proj)
ax.set_extent((79, 156, 10, 66))
gl = ax.gridlines(crs=ccrs.PlateCarree(), draw_labels=False, linewidth=0.2,color='black', alpha=0.5,
linestyle=(3, (20, 5)), xlocs=np.arange(-180, 200, 10), x_inline=False, y_inline=False)
#xlabel_style = {'rotation': 0},ylabel_style = {'rotation': 0})
ax.coastlines(resolution='50m', alpha=1, linewidth=0.5)
ax.add_feature(cartopy.feature.BORDERS, alpha=1,linewidth=0.5)
ax.add_feature(cartopy.feature.LAKES, alpha=0.4)
plt.connect('button_press_event', mouse_click)
plt.show()
I tried to find about it but It's hard to understanding.
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我找到了一些办法。
改变投影。
在兰伯特共形中,x,y 与 lon,lat 不同。但在 PlateCarree 中,它们是相同的。
I found some way.
Change the projection.
In LambertConformal,x,y is different with lon,lat. But in PlateCarree, they are same.