我如何将matplotlib-basemap轴的长度与另一个子图轴相等？

Question

感谢您提供有关此问题的任何帮助。使用底图时，子图出现问题。使用gridspec，我在matplotlib中创建了一个包含三个子图的图形。我想将底图的纬度和经度轴长度与其他2个子图的轴绘制为相同。但是在我当前的代码中，虽然两个子图的纬度轴的长度相同，但经度轴的长度却不同。如何使底图和左下象限子图的经度轴长度相等？有没有办法做到这一点？

这是我的代码：

import pandas as pd
import matplotlib.pyplot as plt
from matplotlib.gridspec import GridSpec
from mpl_toolkits.basemap import Basemap

fig = plt.figure(figsize=(12,12))
gs = GridSpec(2, 2, width_ratios=[3, 1], height_ratios=[3, 1], hspace=0.1, wspace=0.1)
ax1 = fig.add_subplot(gs[0])

map1 = Basemap(projection = 'merc', resolution = 'l',
               lat_0 = 39.65, lon_0 = 27.5, area_thresh = 0.1,
               llcrnrlon = 24.75, llcrnrlat = 35.25, urcrnrlon = 31.0, urcrnrlat = 41.5, ax=ax1)
map1.fillcontinents(color = 'darkgrey', lake_color = 'lightskyblue')
map1.drawmapboundary(fill_color = 'lightskyblue')
map1.drawcoastlines(linewidth = 1.0, color = 'black')
map1.drawcountries(linewidth = 0.5, color = 'black')
ax2 = fig.add_subplot(gs[1])
ax2.set_ylim(35.25, 41.5)
ax3 = fig.add_subplot(gs[2])
ax3.set_xlim(24.75, 31)

for i, ax in enumerate(fig.axes):
        ax.tick_params(labelbottom=False, labelleft=False)
        ax.set_xlabel("")
        ax.set_ylabel("")

ax1.set_xlabel("Longitude (°)", labelpad=10)
ax1.set_ylabel("Latitude (°)", labelpad=10)
ax2.set_xlabel("Depth (km)", rotation=180, labelpad=10)
ax2.set_ylabel("Latitude (°)", labelpad=10)
ax3.set_xlabel("Longitude (°)", labelpad=10)
ax3.set_ylabel("Depth (km)", labelpad=10)

Answer 1

使用GridSpec并设置figsize=(12,12)会导致子图未正确对齐。

我发现使用figsize=(6.3,8.12)生成了一个已对齐的图。

fig = plt.figure(figsize = (6.3, 8.12))
gs = GridSpec(2, 2, width_ratios=[3, 1], height_ratios=[3, 1], hspace=0.2, wspace=0.2)
ax1 = fig.add_subplot(gs[0])

map1 = Basemap(projection = 'merc', resolution = 'l',
               lat_0 = 39.65, lon_0 = 27.5, area_thresh = 0.1,
               llcrnrlon = 24.75, llcrnrlat = 35.25, urcrnrlon = 31.0, urcrnrlat = 41.5, ax=ax1)
map1.fillcontinents(color = 'darkgrey', lake_color = 'lightskyblue')
map1.drawmapboundary(fill_color = 'lightskyblue')
map1.drawcoastlines(linewidth = 1.0, color = 'black')
map1.drawcountries(linewidth = 0.5, color = 'black')
ax2 = fig.add_subplot(gs[1])
ax2.set_ylim(35.25, 41.5)
ax3 = fig.add_subplot(gs[2])
ax3.set_xlim(24.75, 31)

for i, ax in enumerate(fig.axes):
        ax.tick_params(labelbottom=False, labelleft=False)
        ax.set_xlabel("")
        ax.set_ylabel("")

ax1.set_xlabel("Longitude (°)", labelpad=10)
ax1.set_ylabel("Latitude (°)", labelpad=10)
ax2.set_xlabel("Depth (km)", rotation=180, labelpad=10)
ax2.set_ylabel("Latitude (°)", labelpad=10)
ax3.set_xlabel("Longitude (°)", labelpad=10)
ax3.set_ylabel("Depth (km)", labelpad=10)