|
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,Arial,'Hiragino Sans GB','Microsoft YaHei',simsun;vertical-align:baseline;color:rgb(93,93,93);background-color:rgb(255,255,255);"> 
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">前面两行引入相应的库，真正的代码就4行，够简单吧。第1行甚至可以不写，它定义了图的大小。第2行我们创建一个地图，第3行把海岸线画上，第4行显示这个地图，就是这样：<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">你用?<code style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">Java?的?<code style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">4?行代码画一个地图出来？<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">然后我们开始画上国家，又是1行代码：<pre style="margin-bottom:0px;padding-right:0px;padding-left:0px;border:0px;font-size:18px;line-height:inherit;font-family:inherit;vertical-align:baseline;color:rgb(93,255);"><pre class="source-code" style="margin-bottom:0px;padding:15px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;background:rgb(243,244,245);"><code style="margin:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">m.drawcountries(<span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;color:rgb(0,128);">linewidth=1.5)<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">就变成了这样：<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">看上去有点变形，这是因为我们没有添加任何投影的原因，?<code style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">Basemap?提供?<code style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">24?种不同的投影方式，你可以自己一个个试一下，比较常用的是?<code style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">兰勃特投影?，我们添加一下：<pre style="margin-bottom:0px;padding-right:0px;padding-left:0px;border:0px;font-size:18px;line-height:inherit;font-family:inherit;vertical-align:baseline;color:rgb(93,245);"><code style="margin:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;">m = Basemap(<span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;color:rgb(0,128);">llcrnrlon=77,<span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;color:rgb(0,128);">llcrnrlat=14,128);">urcrnrlon=140,128);">urcrnrlat=51,128);">projection=<span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;color:rgb(33,145,97);">'lcc',128);">lat_1=33,128);">lat_2=45,128);">lon_0=100)<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">这次终于看上去比较正常了：<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
<p style="margin-top:1em;margin-bottom:0px;border:0px;font-size:18px;line-height:inherit;font-family:helvetica,255);">
（编辑：李大同）
【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!
|
