mirror of
https://github.com/node-red/node-red.git
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41 lines
2.0 KiB
HTML
41 lines
2.0 KiB
HTML
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<!--
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Copyright JS Foundation and other contributors, http://js.foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<script type="text/x-red" data-help-name="range">
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<p>將數值映射爲另一個區間的數值</p>
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<h3>輸入</h3>
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<dl class="message-properties">
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<dt>payload<span class="property-type">數值</span></dt>
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<dd>有效荷載<i>一定</i>得是一個數值. 否則則會映射失敗。</dd>
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</dl>
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<h3>輸出</h3>
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<dl class="message-properties">
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<dt>payload<span class="property-type">數值</span></dt>
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<dd>被映射到新區間的數值。</dd>
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</dl>
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<h3>詳細</h3>
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<p>該節點將線性縮放所接收到的數值。在默認情況下，結果不限于節點中定義的範圍。</p>
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<p><i>縮放並限制到目標範圍</i>表示結果永遠不會超出目標範圍內指定的範圍。</p>
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<p><i>在目標範圍內縮放並折疊</i>表示結果將會被限制（折疊）在目標範圍內。</p>
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<p>例如，輸入0-10映射到0-100。</p>
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<table style="outline-width:#888 solid thin">
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<tr><th width="80px">模式</th><th width="80px">輸入</th><th width="80px">輸出</th></tr>
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<tr><td><center>scale</center></td><td><center>12</center></td><td><center>120</center></td></tr>
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<tr><td><center>limit</center></td><td><center>12</center></td><td><center>100</center></td></tr>
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<tr><td><center>wrap</center></td><td><center>12</center></td><td><center>20</center></td></tr>
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</table>
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</script>
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