Python如何根据站点列表绘制站坐标全球分布图

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根据站点列表绘制站坐标全球分布图
输入：站点列表文件、SNX全球站点坐标文件
站点列表文件示例(可手动创建)：

结果输出：

代码:

# coding=utf-8# !/usr/bin/env python''' Program:plot_global_sitemap.py  Function:根据站点列表绘制站坐标全球分布图 Author:LZ_CUMT Version:1.0 Date:2021/12/10 '''from math import pi, sqrt, atan, atan2, sin, cosimport matplotlib.pyplot as pltimport matplotlib as mplimport cartopy.crs as ccrsimport cartopy.feature as cfeaturefrom cartopy.mpl.ticker import LongitudeFormatter, LatitudeFormatter# xyz转换为llh（经纬度）def xyz2llh(ecef, site):    aell = 6378137.0    fell = 1.0 / 298.257223563    deg = pi / 180    u = ecef[0]    v = ecef[1]    w = ecef[2]    esq = 2*fell-fell*fell    lat = 0    N = 0    if w == 0:        lat = 0    else:        lat0 = atan(w/(1-esq)*sqrt(u*u+v*v))        j = 0        delta = 10 ^ 6        limit = 0.000001/3600*deg        while delta > limit:            N = aell / sqrt(1 - esq * sin(lat0)*sin(lat0))            lat = atan((w / sqrt(u*u + v*v)) * (1 + (esq * N * sin(lat0) / w)))            delta = abs(lat0 - lat)            lat0 = lat            j = j + 1            if j > 10:                break    long = atan2(v, u)    h = (sqrt(u*u+v*v)/cos(lat))-N    llh = [site, long * 180 / pi, lat * 180 / pi, h]    return llh# 由站点文件获取站点列表存入sitelistdef getSite(listfile):    sitelist = []    f = open(listfile)    ln = f.readline()    while ln:        sitelist.append(ln[0:4].upper())        ln = f.readline()    return sitelist# 根据站点名在snx文件中搜索XYZ坐标转化为经纬度并输出def getBLH_single(site,snxlines):    xyz = [0, 0, 0]    for ln in snxlines:        if site in ln:            if 'STAX   ' in ln:                xyz[0] = float(ln[47:68])            if 'STAY   ' in ln:                xyz[1] = float(ln[47:68])            if 'STAZ   ' in ln:                xyz[2] = float(ln[47:68])    blh = xyz2llh(xyz, site)    if len(blh) != 4:        print('[INFO] Sitecrd for', site, 'is not found in the snxfile')    return blhdef getBLH(listfile, snxfile):    siteBLH = []    sitelist = getSite(listfile)    f = open(snxfile)    lns = f.readlines()    for site in sitelist:        siteBLH.append(getBLH_single(site, lns))    return siteBLHdef plotsite(siteBLH):    # mpl.rcParams['font.sans-serif'] = ['Helvetical']    mpl.rcParams['axes.unicode_minus'] = False    mpl.rc('xtick', labelsize=9)    mpl.rc('ytick', labelsize=9)    mpl.rcParams['xtick.direction'] = 'in'    mpl.rcParams['ytick.direction'] = 'in'    fig = plt.figure(figsize=(14, 7))    ax = plt.axes(projection=ccrs.PlateCarree(central_longitude=150))    ax.set_extent([-180, 180, -90, 90], crs=ccrs.PlateCarree())    ax.set_xticks([0, 60, 120, 180, 240, 300, 360], crs=ccrs.PlateCarree())    ax.set_yticks([-90, -60, -30, 0, 30, 60, 90], crs=ccrs.PlateCarree())    ax.add_feature(cfeature.LAND)    ax.add_feature(cfeature.OCEAN)    ax.add_feature(cfeature.COASTLINE, linewidth=0.1)    for site in siteBLH:        ax.plot(site[1], site[2], 'o', color='r', mec='k', mew=0.5, transform=ccrs.Geodetic(), ms=13.0)        plt.text(site[1] + 1.5, site[2] + 1.5, site[0], transform=ccrs.Geodetic(),fontsize='x-large')  # 添加站名标注    plt.xticks(fontsize='x-large')    plt.yticks(fontsize='x-large')    lon_formatter = LongitudeFormatter(zero_direction_label=True)    lat_formatter = LatitudeFormatter()    ax.xaxis.set_major_formatter(lon_formatter)    ax.yaxis.set_major_formatter(lat_formatter)    fig.savefig('global_sitemap.png', bbox_inches='tight', dpi=400)    plt.show()if __name__ == '__main__':    listfile = r'site.info'               # 输入要画的站点列表文件    snxfile = r'igs21P2177.snx'              # 输入IGS站坐标文件    siteBLH = getBLH(listfile, snxfile)   # 获取所有站点的经纬度    plotsite(siteBLH)           # 画图    print('[INFO] Plot complete!')        # 完成

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