{"id":1810,"date":"2023-08-12T18:30:27","date_gmt":"2023-08-12T10:30:27","guid":{"rendered":"https:\/\/www.huangrongzhen.ink\/?p=1810"},"modified":"2023-08-12T18:31:00","modified_gmt":"2023-08-12T10:31:00","slug":"qt-qcustomplot-%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.huangrongzhen.ink\/?p=1810","title":{"rendered":"Qt QCustomplot \u7684\u4f7f\u7528"},"content":{"rendered":"<div class=\"wp-block-post-excerpt\"><p class=\"wp-block-post-excerpt__excerpt\">\u7b14\u8bb0 <\/p><\/div>\n\n\n<p>\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"c\" class=\"language-c\">\/*********************************************************************************************************\n* \u51fd\u6570\u540d\u79f0\uff1a SetWave1\n* \u51fd\u6570\u529f\u80fd\uff1a \u8bbe\u7f6e\u6ce2\u5f62 1 \u663e\u793a\n* \u8f93\u5165\u53c2\u6570\uff1a buf\uff1a\u7f13\u51b2\u533a\u9996\u5730\u5740\n*            size\uff1a\u7f13\u51b2\u533a\u957f\u5ea6\n*            x0\uff1a\u6a2a\u5750\u6807\u8d77\u70b9\n*            x1\uff1a\u6a2a\u5750\u6807\u7ec8\u70b9\n* \u8f93\u51fa\u53c2\u6570\uff1a void\n* \u8fd4 \u56de \u503c\uff1a void\n* \u521b\u5efa\u65e5\u671f\uff1a 2023\u5e7408\u670812\u65e5\n* \u6ce8    \u610f\uff1a\n*********************************************************************************************************\/\nvoid MainWindow::SetWave1(double* buf, unsigned int size, double x0, double x1)\n{\n    static char s_iInitFlag = 1;\n    unsigned int i;\n    double max, min;\n    double xAxis, step;\n\n    \/\/\u521d\u59cb\u5316\n    if(0 != s_iInitFlag)\n    {\n        s_iInitFlag = 0;\n        QBrush qBrush(QColor(\"white\")); ui-&gt;mWave1-&gt;setBackground(qBrush); \/\/\u8bbe\u7f6e\u80cc\u666f\u989c\u8272\n        ui-&gt;mWave1-&gt;legend-&gt;setVisible(false);                             \/\/\u4e0d\u663e\u793a\u56fe\u4f8b\n        ui-&gt;mWave1-&gt;xAxis-&gt;setRange(0, 4096);                              \/\/\u8bbe\u7f6e\u6a2a\u5750\u6807\u8303\u56f4\n        ui-&gt;mWave1-&gt;yAxis-&gt;setRange(0, 4096);                              \/\/\u8bbe\u7f6e\u7eb5\u5750\u6807\u8303\u56f4\n        ui-&gt;mWave1-&gt;addGraph();                                            \/\/\u6dfb\u52a0\u4e00\u6761\u66f2\u7ebf\n        QPen pen; pen.setColor(QColor(\"red\")); pen.setWidth(1);            \/\/\u753b\u7b14\u914d\u7f6e\n        ui-&gt;mWave1-&gt;graph(0)-&gt;setPen(pen);                                 \/\/\u8bbe\u7f6e\u753b\u7b14\n        ui-&gt;mWave1-&gt;replot();                                              \/\/\u5237\u65b0\u663e\u793a\n    }\n\n    \/\/\u6e05\u7a7a\u5750\u6807\u7f13\u51b2\u533a\n    QVector&lt;double&gt;().swap(wave1XAxis);\n    QVector&lt;double&gt;().swap(wave1YAxis);\n\n    \/\/\u586b\u5145\u5750\u6807\n    xAxis = x0;\n    step = size;\n    step = (x1 - x0) \/ step;\n    for(i = 0; i &lt; size; i++)\n    {\n        wave1XAxis.append(xAxis);\n        wave1YAxis.append(buf[i]);\n        xAxis = xAxis + step;\n    }\n\n    \/\/\u67e5\u627e\u6700\u5927\u6700\u5c0f\u503c\n    max = buf[0];\n    min = buf[0];\n    for(i = 0; i &lt; size; i++)\n    {\n        if(buf[i] &gt; max)\n        {\n            max = buf[i];\n        }\n        if(buf[i] &lt; min)\n        {\n            min = buf[i];\n        }\n    }\n\n    \/\/\u8bbe\u7f6e\u6a2a\u5750\u6807\u8303\u56f4\n    ui-&gt;mWave1-&gt;xAxis-&gt;setRange(x0, x1);\n\n    \/\/\u8bbe\u7f6e\u7eb5\u5750\u6807\u8303\u56f4\n    if(max == min){max = max + 1;min = min - 1;}\n    ui-&gt;mWave1-&gt;yAxis-&gt;setRange(min, max);\n\n    \/\/\u5237\u65b0\u663e\u793a\n    ui-&gt;mWave1-&gt;graph(0)-&gt;setData(wave1XAxis, wave1YAxis);\n    ui-&gt;mWave1-&gt;replot();\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b14\u8bb0<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1810"}],"collection":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1810"}],"version-history":[{"count":2,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1810\/revisions"}],"predecessor-version":[{"id":1812,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=\/wp\/v2\/posts\/1810\/revisions\/1812"}],"wp:attachment":[{"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huangrongzhen.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}