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Questions tagged [qchart]

QCharts provides various 2D chart types to be used within Qt Widgets or Qt Quick applications.

120 questions
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QChartView and QScatterSeries overrdide the label of a QPointF

I have a QChartView which displays some 2D points which are representing each one a specific project I want to label each point with the project name AND NOT with it's x,y coordinates as the default behaviour Is there any way to achieve override…
chatzich
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PyQtChart not displaying data

I have been trying to build a chart using PyQtChart. I have been following this implementation and it is what I would like to produce. https://doc.qt.io/qt-5/qtcharts-datetimeaxis-example.html The Chart displays but is missing the data and the X…
johnashu
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QCharts Second Y Axis on the Right Side

I want to place a second ValueAxis on the right side of a ChartView. The documentation states that "The axes can be placed down, up, left, or right of the chart." However I find no property in the documentation of AbstractAxis, ValueAxis or…
Herr von Wurst
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How to move series in QChart by mouse?

I have drawn a chart by PyQtChart, and I want to move a series by mouse. Press right button to select a series, then move it to target location, after release right button put the series to target location. I can get the selected series in…
Jacky
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How to make QPolarChart angular axis counterclockwise?

By default QPolarChart has clockwise angular axis: I need to make phasor diagram widget, but on phasor diagrams angles must go counterclockwise, phasors must rotate like that: I didn't find method to do this in Qt docs. How can I do it?
willy_j
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QChart initialization causes an EXCEPTION VIOLATION

When I initialize a QChart, it causes an Unhandled exception EXCEPTION_ACCESS_VIOLATION. I have seen this same exception violation error on Qt Forums when others try to initialize a QChart, however their suggestions do not resolve the issue for me.…
Jessica
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How to animate update to values in BarSeries using QChart?

I would like to be able to press a button and update the data shows in a Bar Series. The only way I have found to do this so far is by creating a new series and new bar sets. This has allowed me to create this: I was wondering if anybody knew of a…
Lggx89
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QChart - Bar graph not updating according to Y-axis range

I am new to Python and PyQt5. I am trying to plot a bar graph dynamically using the values coming from virtual port (pyserial). I am able to read all the values, and update the values to the set using self.set0.replace(0, int(dia)). I see that the…
vinuraj_pg
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pyqt QChart dose not show any result

I am using a pyqt GUI application to show some result in charts from postgres database, but it did not work here is my code that i use this is how i creat my table create_table_transaction = ''' CREATE TABLE IF NOT EXISTS transactions ( …
houhou
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How to get values from a chart?

It is easy to get the coordinates of the mouse on the application - self.setMouseTracking(True) def mouseMoveEvent(self, event): mouse_x = event.x() mouse_y = event.y() But for chat it doesn't work at all. How to get coordinate values…
paradoxarium
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How to add data to the chart (QtChart)?

A task: Draw a graph in GUI(PyQT5) on the widget Frame(PyQt5) (this is important). The live-chart is updated 1 time per second. The X axis is the time axis. What happened: Draw a chart (only axis and grid) on the widget What didn't work: New…
paradoxarium
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How to save QChart as image?

I have chart with differrent series. I need to save current ChartView as image. I tried to do it as: QPixmap p(this->size()); QImage* image= new QImage; QPainter *painter= new…
Konstantin
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How to create Subplot using QCharts?

I want to create two subplots (like 2 rows), the first plot will show the line series graph based on Analog to Digital Converter counts stored in a text file and the second plot will show the line series graph based on Temperature values stored in a…
xpress_embedo
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Restrict the scrolling on QChart with QBarCategoryAxis

I'm trying to make the standard Qt barchart example scrollable and zoomable. I can use the scroll and zoom method of QChart to define a custom Chart View class that re-implement the different mouse event. However, with this technique it's possible…
Tackwin
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QAbstractSeries signal clicked because type is QLineSeries

Is there a way to connect QAbstractSeries to a clicked signal because the type of the QAbstractSeries is a QLineSeries? I can do the following: QlineSeries *series = new QLineSeries(); QChart *chart = new…
Wirman
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