Question

我是xarray和cartopy的新手。我想问一下如何在x- / y-刻度上增加/减少标签大小。以下是我的代码。

fig = plt.figure(figsize=(18,8)) 
ax  = plt.axes(projection =ccrs.PlateCarree())   
ax.add_feature(cartopy.feature.LAND,facecolor='wheat') 
ax.add_feature(cartopy.feature.OCEAN) 
ax.add_feature(cartopy.feature.STATES, linestyle='-',lw=1.0,edgecolor='white') 
ax.add_feature(cartopy.feature.BORDERS, linestyle='-',lw=2.5,edgecolor='white') 
gp = ds.isel(time=0).gpm.plot.pcolormesh('lon','lat',ax=ax,
             infer_intervals=True,vmin=0,vmax=1600,cmap='jet',extend='both') 
ax.coastlines(resolution='50m',color='white') 
ax.add_feature(cartopy.feature.RIVERS) 
gl = ax.gridlines(color='gray',alpha=0.6,draw_labels=True) 
gl.xlabels_top, gl.ylabels_right = False, False 
ax.yaxis.tick_right() 
ax.set_ylim([18,32]) 
ax.set_xlim([-100,-77])  
ax.set_title('GPM Accumulated Rain (12Z Aug24 - 12Z Aug31)', fontsize=16) 
ax.set_aspect('equal') 
ax.tick_params('both',labelsize=30) 
plt.show()

我添加了tick_params来设置标签大小，但是字体的大小仍然处于默认大小。同时，有人可以告诉我如何将颜色条标签移动到颜色条标题吗？

谢谢

Answer 1

可以通过将样式字典传递到Gridliner来设置刻度标签的字体大小，方法与切换顶部和右侧标签的方式类似：

gl.xlabel_style = {fontsize: 30}
gl.ylabel_style = {fontsize: 40}

这将导致您的代码如下：

fig = plt.figure(figsize=(18,8)) 
ax  = plt.axes(projection =ccrs.PlateCarree())   
ax.add_feature(cartopy.feature.LAND,facecolor='wheat') 
ax.add_feature(cartopy.feature.OCEAN) 
ax.add_feature(cartopy.feature.STATES, linestyle='-',lw=1.0,edgecolor='white') 
ax.add_feature(cartopy.feature.BORDERS, linestyle='-',lw=2.5,edgecolor='white') 
gp = ds.isel(time=0).gpm.plot.pcolormesh('lon','lat',ax=ax,
             infer_intervals=True,vmin=0,vmax=1600,cmap='jet',extend='both') 
ax.coastlines(resolution='50m',color='white') 
ax.add_feature(cartopy.feature.RIVERS) 
gl = ax.gridlines(color='gray',alpha=0.6,draw_labels=True) 
gl.xlabels_top, gl.ylabels_right = False, False
gl.xlabel_style, gl.ylabel_style = {'fontsize': 30}, {'fontsize': 40}
ax.yaxis.tick_right() 
ax.set_ylim([18,32]) 
ax.set_xlim([-100,-77])  
ax.set_title('GPM Accumulated Rain (12Z Aug24 - 12Z Aug31)', fontsize=16) 
ax.set_aspect('equal') 
plt.show()

应生成如下所示的图（减去数据）：

实际上，Cartopy中的GeoAxis 应该处理ax.tick_params('both', labelsize=30)，但似乎在生成标签时不会向下传递。随时在Cartopy GitHub repository上提出问题，开发者社区可以解决该问题。或通过提交拉取请求自行修复它！

python xarray刻度标签大小问题

1 个答案: