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                        <section class="" style="white-space: normal; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255); font-family: 微软雅黑; "><section class="" data-id="32" data-color="rgb(55, 74, 174)" data-custom="rgb(55, 74, 174)" style="max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; border: 0px none; "><blockquote style="margin: 3px; padding: 10px 15px; border-top-width: 3px; border-right-width: 3px; border-bottom-width: 3px; border-color: rgb(55, 74, 174); max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; border-top-left-radius: 50px; border-bottom-right-radius: 50px; box-shadow: rgb(165, 165, 165) 5px 5px 2px; background-color: rgb(250, 250, 250); "><section class="" data-style="margin-top: 15px; margin-bottom: 0px; padding: 0px; color: rgb(107, 77, 64); line-height: 2em; font-size: 20px; border-color: rgb(107, 77, 64);font-size: 18px;font-weight:bold;" style="color: rgb(62, 62, 62); line-height: 25.6px; max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; "><p style="margin-top: 15px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; color: rgb(55, 74, 174); line-height: 2em; border-color: rgb(55, 74, 174); "><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; "><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; "><span style="font-size: 4px; ">  </span>飞言飞语</strong></span></p></section><p style="margin-top: -10px; white-space: normal; color: inherit; line-height: 2em; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1.5em; "><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-size: 12px; "><strong class="" data-brushtype="text" style="padding-right: 15px; padding-left: 15px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; border-bottom-left-radius: 20px; border-bottom-right-radius: 20px; color: rgb(255, 255, 255); font-size: 13px; background-color: rgb(55, 74, 174); ">   Q&A   </strong></span></p><section class="" data-style="margin-top: 0px; margin-bottom: 0px; padding: 0px; line-height: 2em; font-size: 14px; min-height: 1.5em; color: inherit;" style="max-width: 100%; box-sizing: border-box; word-wrap: break-word !important; "><p style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; "><span style="color: rgb(0, 82, 255); "><span style="font-size: 14px; line-height: 22px; color: rgb(0, 0, 0); ">      最近经常有朋友苦恼：如何提取一个不规则区域的栅格图像？</span></span></p><p style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; "><span style="color: rgb(0, 82, 255); "><span style="font-size: 14px; line-height: 22px; color: rgb(0, 0, 0); ">      本期，小飞飞给大家推荐一个非常实用的提取工具——【按掩膜提取】，然后，各位飞友，你们就可以随心所欲地提取你们想要的区域了。</span></span></p><p style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; "><span style="color: rgb(0, 82, 255); "><span style="font-size: 14px; line-height: 22px; color: rgb(0, 0, 0); "><br  /></span></span></p><p style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; text-align: center; "><span style="font-size: 18px; color: rgb(217, 33, 66); "><strong><span style="font-size: 18px; line-height: 22px; ">同样，还是图文·实例哦！</span></strong></span></p></section></blockquote></section></section><p style=""><br style=""  /></p><p style=""><br  /></p><section data-id="653" class="e7editor" data-color="rgb(30, 155, 232)" data-custom="rgb(30, 155, 232)" style="font-family: 微软雅黑; border: 0px none; box-sizing: border-box; "><section style="border: 0px none; box-sizing: border-box; "><section style="margin-right: 5px; margin-left: 5px; box-sizing: border-box; "><section style="white-space: normal; margin-bottom: -54px; text-align: right; box-sizing: border-box; "><section style="margin-right: 10px; display: inline-block; box-sizing: border-box; "><section style="border-bottom-width: 12px; border-bottom-style: solid; border-bottom-color: rgb(30, 155, 232); border-left-width: 12px; border-left-style: solid; border-left-color: transparent; border-right-width: 0px; border-right-style: solid; border-right-color: transparent; height: 0px; width: 0px; float: left; box-sizing: border-box; "></section><section style="float: left; box-sizing: border-box; "><section style="opacity: 0.85; box-sizing: border-box; "><section class="white" style="padding-right: 5px; padding-left: 5px; width: 50px; height: 50px; display: table-cell; vertical-align: middle; color: rgb(255, 255, 255); background-color: rgb(30, 155, 232); text-align: center; box-sizing: border-box; "><section style="color: inherit; box-sizing: border-box; "><strong style="">图文</strong></section></section><section style="border-top-width: 10px; border-top-style: solid; border-top-color: rgb(30, 155, 232); border-left-width: 25px; border-left-style: solid; border-left-color: transparent; border-right-width: 25px; border-right-style: solid; border-right-color: transparent; height: 0px; width: 0px; box-sizing: border-box; "></section></section></section><section style="border-bottom-width: 12px; border-bottom-style: solid; border-bottom-color: rgb(30, 155, 232); border-left-width: 0px; border-left-style: solid; border-left-color: transparent; border-right-width: 12px; border-right-style: solid; border-right-color: transparent; height: 0px; width: 0px; float: left; box-sizing: border-box; "></section></section></section><section style="padding: 50px 10px 10px; box-shadow: rgba(0, 0, 0, 0.496094) 0px 0px 6px; box-sizing: border-box; "><section style="white-space: normal; border: 0px none; box-sizing: border-box; "><section class="active" style="color: rgb(30, 155, 232); box-sizing: border-box; "><section style="color: inherit; box-sizing: border-box; "><strong style=""><strong style="">【按掩膜提取（Extract by Mask）】</strong></strong></section></section></section><section style="white-space: normal; border: 0px none; box-sizing: border-box; "><section style="margin-top: 20px; margin-bottom: 20px; padding: 20px 10px; border-top-width: 1px; border-top-style: dashed; border-top-color: rgb(153, 153, 153); border-bottom-width: 1px; border-bottom-style: dashed; border-bottom-color: rgb(153, 153, 153); color: rgb(60, 60, 60); text-align: justify; box-sizing: border-box; "><p style="text-align: center; "><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyaD21brxP0OG3a5oCKgLHfgXr63Z7YSlN5RqJicCBdVG8t2k2duGUgHbw.png" /><br  /><span style="font-size: 14px; "><strong style="color: rgb(30, 155, 232); "><strong style="">（</strong></strong></span> <a rel="009z/009z00000003000000.htm"><span style="font-size: 14px; "><strong style="color: rgb(30, 155, 232); ">Spatial Analyst</strong></span> </a><span style="font-size: 14px; "><strong style="color: rgb(30, 155, 232); "><strong style="">-Extract-<strong style="color: rgb(30, 155, 232); font-family: 微软雅黑; white-space: normal; "><strong style="">Extract by Mask</strong></strong>）</strong></strong></span></p></section></section><section style="border: 0px none; box-sizing: border-box; "><p style="white-space: normal; "><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">1.</span></strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">按照定义的掩膜区域的提取栅格像元</span></p><p style="white-space: normal; "><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); "><br  /></span></p><p style="white-space: normal; "><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">2.</span></strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">当输入为</span><a esrisubtype="extrel" rel="/zh-cn/help/main/10.1/009t/009t00000005000000.htm" style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); text-decoration: underline; "><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">多波段栅格</span></strong></a><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">时，将输出一个新的多波段栅格。对输入多波段栅格中的每一单个波段都会进行相应分析。</span><span style="background-color: rgb(255, 255, 255); color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; ">如果输入内容为根据多波段栅格（超过三个波段）创建的图层，提取操作将只考虑图层加载（符号化）的波段。因此，输出的多波段栅格只会具有三个波段，分别对应于输入图层显示中使用的多波段栅格。</span></p><p style="white-space: normal; "><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); "><br  /></span></p><p style="white-space: normal; "><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">3.</span></strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">默认输出格式是 </span><a esrisubtype="extrel" rel="/zh-cn/help/main/10.1/009t/009t0000000w000000.htm#GUID-12D8D2B9-5CB6-4FFB-B7CC-B3B814A1ED29" style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); text-decoration: underline; "><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">Esri Grid 堆栈</span></a><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">。请注意，Esri Grid 堆栈的名称不能以数字开头、不能使用空格，并且长度不能超过 9 个字符。</span></p><p style="white-space: normal; "><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); "><br  /></span></p><p><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">4.</span></strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">如果输入掩膜是栅格，则会将非 NoData 输入像元位置的值复制到输出栅格。</span><br  /></p><p style="white-space: normal; "><br  /></p><p style="white-space: normal; "><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">5.</span></strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">如果输入栅格为整型，那么输出栅格也为整型。如果输入栅格为浮点型，则输出栅格也为浮点型</span></p><p style="white-space: normal; "><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); "><strong style=""><span style="color: rgb(0, 82, 255); "></span></strong></span><br  /></p></section></section></section></section><section style="white-space: normal; width: 0px; height: 0px; clear: both; box-sizing: border-box; "></section></section><p><br  /></p><section class="articlee7" style="white-space: normal; font-family: 微软雅黑; "><section data-id="653" class="e7editor" data-color="rgb(30, 155, 232)" data-custom="rgb(30, 155, 232)" style="border: 0px none; box-sizing: border-box; "><section style="border: 0px none; box-sizing: border-box; "><section style="margin-right: 5px; margin-left: 5px; box-sizing: border-box; "><section style="margin-bottom: -54px; text-align: right; box-sizing: border-box; "><section style="margin-right: 10px; display: inline-block; box-sizing: border-box; "><br style=""  /><br style=""  /></section></section></section></section></section></section><section data-id="98" class="e7editor" style="white-space: normal; font-family: 微软雅黑; line-height: 25.6px; border: 0px none; box-sizing: border-box; "><section class="e7wei" data-id="85830" style="box-sizing: border-box; "><section style="text-align: center; border: 0px none; box-sizing: border-box; "><section style="margin-right: auto; margin-bottom: -50px; margin-left: auto; padding: 15px; width: 130px; height: 130px; display: inline-block; box-sizing: border-box; background-color: rgb(254, 254, 254); "><section style="width: 100px; height: 100px; display: inline-block; border: 1px solid rgb(198, 198, 199); border-top-left-radius: 50%; border-top-right-radius: 50%; border-bottom-right-radius: 50%; border-bottom-left-radius: 50%; box-sizing: border-box; "><p style="color: inherit; line-height: 6.5em; "><span style="font-size: 24px; "><strong style=""><span style="color: rgb(89, 89, 89); ">实例</span></strong></span></p></section></section><section style="margin: -50px 20px 60px; box-sizing: border-box; "><section data-width="100%" style="margin-top: 3px; padding-top: 10px; padding-bottom: 10px; display: inline-block; width: 516px; color: rgb(70, 70, 72); box-sizing: border-box; float: left; border-color: rgb(198, 198, 199); "><section style="margin-top: 1em; border: 0px none rgb(198, 198, 199); clear: both; box-sizing: border-box; color: inherit; "><section style="margin-bottom: -3px; float: right; border-color: rgb(198, 198, 199); width: 6px; border-top-left-radius: 50%; border-top-right-radius: 50%; border-bottom-right-radius: 50%; border-bottom-left-radius: 50%; box-sizing: border-box; height: 6px !important; background-color: rgb(198, 198, 199); "></section><section style="margin-bottom: -2px; text-align: left; border-color: rgb(198, 198, 199); width: 6px; border-top-left-radius: 50%; border-top-right-radius: 50%; border-bottom-right-radius: 50%; border-bottom-left-radius: 50%; box-sizing: border-box; height: 6px !important; background-color: rgb(198, 198, 199); "></section><section style="margin-top: -20px; text-decoration: inherit; color: inherit; border-color: rgb(198, 198, 199); box-sizing: border-box; "><section data-width="100%" style="border-top-width: 1px; border-top-style: solid; width: 516px; float: left; border-color: rgb(198, 198, 199); box-sizing: border-box; color: inherit; "></section></section></section></section></section><section style="margin: 30px auto; display: inline-block; box-sizing: border-box; "><p style=""><span style="color: rgb(165, 165, 165); line-height: 25.6px;">按省行政边界裁剪影像</span><br  /></p></section></section></section></section><p><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">【所</span><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">需数据】</span></strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">：行政区划数据、栅格影像数据（可向小飞飞索取哦）</span><br  /></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyabOaX5tiaKRvYibofc6wTl0lKL4BKFpmOfx9a6khv8tuVEjYnIdHTIr2w.png" /><br  /><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyaXkE8Yaic5KX1SZvrGoyZx43XFukoxCQv2bg1cCuW74eB6cgqKG6wmyg.png" /><br  /></span></p><p><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">【注意事项】</span></strong></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">1、必须保证矢量数据与栅格数据的坐标系是一致的。</span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">2、需要是面数据，若只有线数据，需要先转为面方能执行裁剪操作。</span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">3、栅格数据可以是遥感影像数据、DEM数据等专业数据，也可以是图像、照片等数据。 </span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><strong style="white-space: pre-wrap; "><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255); ">【操作步骤】</span></strong></span></p><p><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">1、保存待提取省份的矢量数据。</span></strong></p><ul style="list-style-type: disc; " class=" list-paddingleft-2"><li><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">使用【通过矩形选择要素 】工具 ，选中 “江苏省 ” 图形数据 ；</span></p></li><li><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">右击 “省级行政区”图层，选择【数据】|【导出数据】，打开导出数据对话框，输出要素设置为 “江苏省”；确定 ，得到江苏省的行政区划数据。</span></p></li></ul><p><br  /></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyaA7OzMCdd8Uzujn6RC5XURYSsJ7VHkTP1mOAoIfkBjf9ZhX45mdno5w.png" /><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyaA1ib6eGMGlk2vCyhVZO3uaqkjzkBRicAmmgKmsc7XKVSF87EV8mVt2Hg.png" /><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><br  /></span></p><p><strong><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">2、裁剪栅格数据。</span></strong></p><ul style="list-style-type: disc; " class=" list-paddingleft-2"><li><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);">打开 【SpatialAnalyst 工具 】|【提取分析】 |【按掩膜提取 】工具， 输入栅格设置为 “影像 ”，输入掩膜数据设置为“江苏省 ”，输出栅格设置为 “jiangsu_grid”；确定 ，得到江苏省影像数据。 </span></p></li></ul><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyazcn0MUO7G0iad9bukBW1OCq0YQo22Ju2PIvibIRibfKENhUneKoYY0aLw.png" /><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQnbXFQAGdsib724KZMZTGUyajiazhHYrRxg4VjpSNPoTeWg4BNThHMkIKWeyAEaia7pRuaRpsueolowA.png" /><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><br  /></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"></span></p><p style="white-space: normal; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; color: rgb(62, 62, 62); background-color: rgb(255, 255, 255); text-align: center; "><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; font-size: 18px; color: rgb(0, 82, 255); "><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; ">好啦，大家试试看吧！</strong></span></p><p style="white-space: normal; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important; min-height: 1em; color: rgb(62, 62, 62); background-color: rgb(255, 255, 255); text-align: center; "><img src="http://up.upnews.cn/images/20160617/jYicjbq67iaQlwyRogYoIKKv62liaw5ET6EeHUjnFIruXMqYzdFd1xvUcyZ3XeknyKkO01cxkYAydyXVLsEbK6MXA.gif" /> </p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"><br  /></span><br  /></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"></span></p><p><span style="color: rgb(102, 102, 102); font-size: 14px; line-height: 24px; background-color: rgb(255, 255, 255);"></span></p>
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