Qcustomplot key. h和qcustomplot. This repository contains all examples available from QCustomPlot library compliant with CMake build system - legerch/QCustomPlot-examples QCustomPlot介绍 QCustomPlot是一个小型的 qt 画图标类，效果可以，易用，只需要在项目中加入头文件qcustomplot. May 16, 2025 · This guide provides detailed instructions for integrating QCustomPlot into Qt applications. data with one key dimension), such as QCPGraph and QCPCurve. A color map has three dimensions to represent a data point: The key dimension, the value dimension and the data dimension. Demonstrates how to use Qcustomplot for both realtime and offline data plotting. This template class derives from QCPAbstractPlottable and from the abstract interface QCPPlottableInterface1D. Examples Adding a plot title is a typical and simple case to QCustomPlot is a Qt C++ widget for plotting. e. If keyAxis and valueAxis are left unspecified (0), the bottom (xAxis) is used as key and the left (yAxis) is used as value axis. 过程 1. I found nothing like that in QCustomPlot. 1、下载 Sep 23, 2021 · The reason why QCustomPlot uses the terminology key and value instead of x and y is to allow more flexibility in assigning which axis has what role. Then you assign the graph some data points, e. QCustomPlot is a Qt C++ widget for plotting and data visualization. Since the return type of that function is the abstract base class of all plottables, QCPAbstractPlottable, you will probably want to qobject_cast the returned pointer to the respective plottable subclass. By default, this top level grid layout contains a single cell which holds the main axis rect. Supported compilers The following compilers are known to work: You can access and manipulate existing data via QCPGraph::data. Supported compilers The following compilers are known to work: QCustomPlot is a Qt C++ widget for plotting. As usual, the cast QCustomPlot has setData function that accepts const variable. 编写代码… The top level plot layout Every QCustomPlot has one top level layout of type QCPLayoutGrid. QCustomPlot is a Qt C++ widget for plotting. The properties of the newly created plottable can then be accessed via the newCurve pointer. The reason why QCustomPlot uses the terminology key and value instead of x and y is to allow more flexibility in assigning which axis has what role. QCustomPlot can optimize away millions of off-screen points very efficiently. If the type is ptPlotCoords, key and value mean a point in the plot coordinate system defined by the axes set by setAxes. via customPlot->graph(0)->setData(. It has no further dependencies and is well documented. . It is accessible via QCustomPlot::plotLayout and contains (directly or indirectly via other sub-layouts) all layout elements in the QCustomPlot. keyAxis and valueAxis must reside in the same QCustomPlot instance and not have the same orientation. As a last resort, try to reduce the number of data points that are in the visible key range at any given moment, e. - Qwt is LGPL, so you can link it into non-GPL project. g. details is an optional output parameter. so/. cpp与. 显示坐标轴 默认只显示左y轴和下边的x轴，调用setVisible (bool)设置轴是否显示 QCustomPlot is a QWidget type that can be used the same way as any other widget, added to layouts, etc. QCustomPlot is a QWidget type that can be used the same way as any other widget, added to layouts, etc. Don't confuse the viewport with the axis rect (QCustomPlot::axisRect). The viewport normally is the rect () of the QCustomPlot widget, i. EDIT: Author of QCustomPlot is aware of missing functionality to set plot background and promises to add it in upcoming release. qcustomplot. cpp文件，然后使一个widget提升为QCustomPlot类，即可使用。 QCustomPlot官网： Qt Plotting Widget QCustomPlot - Introduction QCustomPlot is a Qt C++ widget for plotting. ), for example in the form of two QVector<double> for x and y (key and value). 通常，我们对QCustomPlot中的曲线数据无外乎增、删、改、查这几种操作。 然而对于初次或者接触QCustomPlot时间不长的用户来说，其提供的曲线数据操作接口可能让人有些摸不着头脑。 因此，在这里记录本人对QCustomPlot曲线数据操作的一些理解和经验，以供各位参考。 QCustomPlot部分官方文档翻译. keyAxis will be used as key axis (typically "x") and valueAxis as value axis (typically "y") for the graph. As with other plottables such as graphs, key and value correspond to two orthogonal axes on the QCustomPlot surface that you specify in the QCPColorMap constructor. For information about specific plot types and styling options, see Key Features and Styling and Customization. The key in allowing independent dragging and zooming of each axis (left, right, bottom, and top) is the use of setRangeDragAxes () and setRangeZoomAxes () limited to the list of axes you wish to drag or zoom. The actual setting of the selection state is not done by this function. If either of these restrictions is violated, a corresponding message is printed to the debug output (qDebug), the construction is not aborted 0、说明 本节翻译总结自：Qt Plotting Widget QCustomPlot - Basic Plotting 本节内容是使用QCustomPlot进行基本绘图。 本节教程都使用customPlot这个变量，它是一个指向QCustomPlot实例的指针，当然，在我们的项目中，我们更可能是通 QCustomPlot is a Qt C++ widget for plotting. （一）——安装与配置 1、下载 去 Qt Plotting Widget QCustomPlot - Download下载需要版本的QCustomPlot的压缩包QCustomPlot. - berndporr/qcustomplotdemo 0、需求： 开发一个需要实时数据可视化的Qt应用，想要结合多线程来提高性能，同时处理数据的实时读写。 需要在主线程中更新UI（比如用QCustomPlot绘图），而数据采集或处理在后台线程运行，避免界面 卡顿。使用QThread是正确的选择，但Qt的多线程机制需要注意线程安全，尤其是数据共享部分 一. QT 同时被 2 个专栏收录 18 篇文章 订阅专栏 QCustomPlot 6 篇文章 订阅专栏 先看轴部分的名称约定，根据名称就可以修改对应的属性了 1. Plottables (including graphs) can be retrieved via QCustomPlot::plottable. QCustomPlot QCustomPlot is a Qt C++ widget for plotting. This document provides an overview of the key features and capabilities of QCustomPlot, a Qt C++ widget designed for 2D plotting and data visualization. If either of these restrictions is violated, a corresponding message is printed to the debug output (qDebug), the construction is not aborted QCUSTOMPLOT_USE_OPENGL If this flag is defined, QCustomPlot can use OpenGL to improve plot performance for graphically demanding plots, see QCustomPlot::setOpenGl. The typical mathematical choice is to use the x-axis (QCustomPlot::xAxis) as key axis and the y-axis (QCustomPlot::yAxis) as value axis. Have a look at the Setting Up and the Basic Plotting tutorials to get started. It details the core functionalities that enable developers to create both static and real-time visualizations in Qt applications. QCUSTOMPLOT_USE_OPENGL If this flag is defined, QCustomPlot can use OpenGL to improve plot performance for graphically demanding plots, see QCustomPlot::setOpenGl. QCustomPlot is a Qt C++ widget for plotting. h文件，这两个文件是我们需要的。 2、添加到项目 QCustomPlot is a Qt C++ widget for plotting. This plotting library focuses on making good looking, publication quality 2D plots, graphs and charts, as well as offering high performance for realtime visualization. Naming convention of axis parts Overview of the spacings and paddings that define the geometry of an axis. QCustomPLot is under default license GPL, feel free to use QCP in free software! Visit https://www. Every layerable subclass may place any information in details. Access QCustomPlot's default four axes via QCustomPlot::xAxis (bottom), QCustomPlot::yAxis (left), QCustomPlot::xAxis2 (top) and QCustomPlot::yAxis2 (right). There's also another important difference between QCustomPlot and Qwt - licensing. Axes are always part of an axis rect, see QCPAxisRect. Hi, My data is already plotted on: ui->cumstomPlot_1 And now i need to read this data (256 "y" values), sum each value ( from this y axis) and write a new f QCustomPlot is a Qt C++ widget for plotting. This is handled by the parent QCustomPlot when the mouseReleaseEvent occurs, and the finally selected object is notified via the selectEvent / deselectEvent methods. Is there a way to QCustomPlot can be use to plot dynamically? QCustomPlot setData function accepts constant vectors, but I have to chan QCustomPlot is a Qt C++ widget for plotting. So if you define the left axis as "key axis" and the bottom as "value axis", you can plot a graph that's standing upright on the left of the plot. QCustomPlot开发笔记系列整理集合，这是目前使用最为广泛的Qt图表类（Qt的QWidget代码方向只有QtCharts，Qwt，QCustomPlot），使用多年，系统性的整理，过目并整理了原有文档，本系列旨在系统解说并逐步更新其各种Demo示例。 _qcustomplot The viewport normally is the rect () of the QCustomPlot widget, i. a rect with top left (0, 0) and size of the QCustomPlot widget. In that case the origin (0, 0) is in the top left corner of the QCustomPlot viewport. Examples Beside the examples below, you may want to check the documentation. cpp 和 QCustomPlot. Returns a pointer to the newly created graph, or 0 if QCustomPlot 是一个比较小的 QT 图表插件。使用时，我们在程序中写完相关调用的代码后，只需将 QCunstomPlot. However, you can nest multiple graphs in a single QCustomPlot using layouts (see the Advanced Axes demo). gz，下载解压后会得到qcustomplot的. QCUSTOMPLOT_COMPILE_LIBRARY Define this flag when compiling QCustomPlot as a shared library (. An axis rect is typically an area enclosed by four axes, where the graphs/plottables are drawn in. h 两个文件加入工程，正常编译即可。看起来使用挺方便。对于简单的，效率不高的数据可视化需求，基本能满足。这里把使用该插件的一些经验做 Constructs a curve which uses keyAxis as its key axis ("x") and valueAxis as its value axis ("y"). For example, if the type is ptAbsolute, key and value mean the x and y pixel position on the QCustomPlot surface. Contribute to hicpp/QCustomPlot development by creating an account on GitHub. dll) QCUSTOMPLOT_USE_LIBRARY QCustomPlot is a Qt C++ widget for plotting. tar. com for commertial license and more information! QCustomPlot is a Qt C++ widget for plotting and data visualization. It serves as a base class for all one-dimensional data (i. Creates a new graph inside the plot. It covers the setup process, widget configuration, data integration patterns, and performance considerations. 前言 楼主最近在学习QCustomplot相关的内容，于是想着记录下自己所学的，同时也给分享给有需要的人 楼主所涉及不深，也不一定描述的对，不喜勿喷。谢谢二. I am using QCustomPlot and have a multiple graphs plotted on the screen, i want to be able to click and point and then be able to get the data or coordinates etc of the point that I clicked on, I k QCustomPlot is a Qt C++ widget for plotting. Normally, the key and value axes are set in the constructor of the plottable (or QCustomPlot::addGraph when working with QCPGraphs through the dedicated graph interface). dll) QCUSTOMPLOT_USE_LIBRARY Constructs a graph which uses keyAxis as its key axis ("x") and valueAxis as its value axis ("y"). If specified, keyAxis and valueAxis must reside in this QCustomPlot. This plotting library focuses on making good looking, publication quality 2D plots, graphs and charts, as well as offering high performance for realtime visualization applications. 拖动一个QWidget，提示为QCustomplot2. Constructs a graph which uses keyAxis as its key axis ("x") and valueAxis as its value axis ("y"). If either of these restrictions is violated, a corresponding message is printed to the debug output (qDebug), the construction is not aborted, though. by limiting the maximum key range span (see the QCPAxis::rangeChanged signal). vltbd, ks84u, emjo, oqto, 7j1d, pob4t, ida7i, a9zc, woenq, hixufm,