Python Basemap-从shapefile添加文本
在阅读了关于注释和添加文本的文章之后,我仍然遇到了一些问题Python Basemap-从shapefile添加文本,python,matplotlib,matplotlib-basemap,Python,Matplotlib,Matplotlib Basemap,在阅读了关于注释和添加文本的文章之后,我仍然遇到了一些问题 shapefile_info = m.readshapefile('/path/to/shapefile', 'shapefile_name') for info, shape in zip(m.points_info, m.points): print info, shape 读入shapefile并打印出信息(使用上述代码),我们得到以下输出: {'LABELTYPE':'ONE','LABELNAME':'Start P
shapefile_info = m.readshapefile('/path/to/shapefile', 'shapefile_name')
for info, shape in zip(m.points_info, m.points):
print info, shape
读入shapefile并打印出信息(使用上述代码),我们得到以下输出:
{'LABELTYPE':'ONE','LABELNAME':'Start Point'}(2274311.7551607937759422.9640236866)
{'LABELTYPE':'TWO','LABELNAME':'End Point'}(1839892.6558604166947255.0800333266)
使用下面的代码
from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
l_one, l_two = 0, 0
m = Basemap(projection = 'merc', llcrnrlat= -2, urcrnrlat= 52, llcrnrlon= -137,\
urcrnrlon= -58, lat_ts=40,resolution='i')
m.shadedrelief()
m.drawcoastlines(linewidth=0.5)
m.drawcountries(linewidth=0.5)
m.drawstates(linewidth=0.5)
m.drawparallels(np.arange(-90, 90, 10), linewidth = 0.2,
labels = [True, False, True, False], fontsize = 'x-small')
m.drawmeridians(np.arange(-180, 180, 10), linewidth = 0.2,
labels = [False, False, False, True], fontsize = 'x-small')
m.readshapefile('/path/to/shapefile', 'shapefile_name')
shapefile_info = m.readshapefile('/path/to/shapefile', 'shapefile_name')
for info, shape in zip(m.points_info, m.points):
x, y = zip(shape)
if info['LABELTYPE'] == 'ONE':
m.plot(x, y, c = 'k', ms = 9., ls = "", mew = 1.,
label = 'Start Point' if l_one == 0 else "_no-legend_")
x, y = m(y[0], x[0])
plt.plot(x, y, info['LABELNAME'])
l_one += 1
if info['LABELTYPE'] == 'TWO':
m.plot(x, y, c = 'c', ms = 9., ls = "", mew = 1.,
label = 'End Point' if l_two == 0 else "_no-legend_")
x, y = m(y[0], x[0])
plt.plot(x, y, info['LABELNAME'])
l_two += 1
我得到以下错误:
非法格式字符串“起始点”;两个线型符号
为什么我会出现这个错误,我该如何着手修复它,以便能够将字典中的文本放到绘图上?将一些文本放在
(x,y)
位置,您可以使用它来代替plt.plot()
(如plot
绘制线条图,而不是文本)
或者在这种情况下
plt.text(x, y, info['LABELNAME'])
要在位置
(x,y)
放置一些文本,您可以使用而不是plt.plot()
(因为plot
绘制的是线条图,而不是文本)
或者在这种情况下
plt.text(x, y, info['LABELNAME'])