Question

我一直在使用OSMNX从开放街道地图中提取公园的形状。我试图将它们显示为标准的pyplot子图，但我不能完全使其直接工作。

说这是我的很多地方：

places = 
     {'Hyde Park'       : 'Hyde Park, London, UK',
      'Kensington Gardens'        : 'Kensington Gardens, London, UK',
      'Regents Park'       : 'Regents Park, London, UK',
      'Hampstead Heath' : 'Hampstead Heath, London, UK',
      'Alexandra Park' : 'Alexandra Park, London, UK',
      'Clissold Park' : 'Clissold Park, London, UK',
      'Finsbury Park' : 'Finsbury Park, N4 2NQ, London, UK',
      'Russell Square' : 'Russell Square, London, UK'
     }

以下正确显示了堆叠的形状：

for place in sorted(places.keys()):
    query = places[place]
    print(query)
    G = ox.gdf_from_place(query)
    fig, ax = ox.plot_shape(G)

我不是pyplot / OSMNX的专家，但我了解的是，为了将形状图传递到子图，我需要以某种方式“提取轴”。

但是，我知道如何绘制形状，将其转换为shapefile，并在子图中显示它：

import shapefile
n = len(places)
ncols = int(np.ceil(np.sqrt(n)))
nrows = int(np.ceil(n / ncols))
figsize = (ncols * 3, nrows * 3)

fig, axes = plt.subplots(nrows, ncols, figsize=figsize, subplot_kw, {'projection':None})
axes = [item for sublist in axes for item in sublist]

for ax, place in zip(axes, sorted(places.keys())):
    query = places[place]
    G = ox.gdf_from_place(query)
    ox.save_gdf_shapefile(G, folder='shp', filename=place)

    shp = shapefile.Reader("shp/"+place+"/"+place+".shp")

    for shape in shp.shapeRecords():
        x = [i[0] for i in shape.shape.points[:]]
        y = [i[1] for i in shape.shape.points[:]]
        ax.plot(x,y)

是否可以直接使用plot_shape（）生成相同的图表？

Answer 1

根据您的最终目标是几个选择：

// related posts - don't show posts earlier than January 1 2017
function jetpackme_exclude_related_post($exclude_post_ids, $post_id ) {`

  $args = array(
 'date_query'          => array(
 'before' => 2017-01-01,
 'inclusive'         => true,
 ),

'posts_per_page' => '99999',
'fields' => 'ids'
);
$query = new WP_Query($args);


if ($query->have_posts()):
foreach($query->posts as $id ):
$exclude_post_ids[] = $id;
endforeach;
endif;
return $exclude_post_ids;
}
add_filter( 'jetpack_relatedposts_filter_exclude_post_ids', 
'jetpackme_exclude_related_post', 20, 2 );

osmnx：如何使plot_shape（）在pyplot子图中工作？

1 个答案: