显示形状文件 [英] Displaying a Shapefile

问题描述

我有一个 shapefile 想要显示.我尝试使用 matplotlib 来显示它，但我得到了这个:但是，当我尝试使用在线网站进行显示时，我得到了这个；

I have a shapefile that I want to display. I tried using matplotlib to display it, but I get this: However, when I tried to display using an online website I get this;

如何获得第二张图片?

这是我的代码:

import shapefile
import matplotlib.pyplot as plt

print("Initializing Shapefile")
sf = shapefile.Reader("ap_abl")
apShapes = sf.shapes()
points = apShapes[3].points
print("Shapefile Initialized")

print("Initializing Display")
fig = plt.figure()
ax = fig.add_subplot(111)
plt.xlim([78, 79])
plt.ylim([19, 20])
print("Display Initialized")

print("Creating Polygon")
ap = plt.Polygon(points, fill=False, edgecolor="k")
ax.add_patch(ap)
print("Polygon Created")

print("Displaying polygon")
plt.show()

提前致谢.

推荐答案

结果是一个 shapefile 内部有多个形状，我需要绘制所有形状.从那以后，这是有效的:

Turns out that a shapefile has multiples shapes inside and I needed to plot all of them. From that, this is what works:

import shapefile
import matplotlib.pyplot as plt

sf = shapefile.Reader("ap_abl")

print("Initializing Display")
fig = plt.figure()
ax = fig.add_subplot(111)
plt.xlim([76, 85])
plt.ylim([12, 21])
print("Display Initialized")

for shape in sf.shapes():
    print("Finding Points")
    points = shape.points
    print("Found Points")    

    print("Creating Polygon")
    ap = plt.Polygon(points, fill=False, edgecolor="k")
    ax.add_patch(ap)
    print("Polygon Created")

print("Displaying Polygons")
plt.show()

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