qtgui

implementing pyqtgraph for live data graphing

由 空扰寡人 提交于 2019-11-27 12:36:23
问题 I am trying to get a live plot of data as it is being collected by an instrument using pyqtgraph. The data collection is handled by the main process this is then passed over a connection to a subprocess that plots it. I am just trying to pass the new data and have it update when the new data is passed. I have tried to implement this by putting the connection read inside the Qt Timer update loop but then I have difficulty passing the graph data (which I want to append to) between successive

Display QImage with QtGui

由 久未见 提交于 2019-11-27 11:07:05
I am new to Qt, and I am trying to create a simple GUI Application that displays an image once a button has been clicked on. I can read the image in a QImage object, but is there any simple way to call a Qt function that takes the QImage as an input, and displays it? Simple, but complete example showing how to display QImage might look like this: #include <QtGui/QApplication> #include <QLabel> int main(int argc, char *argv[]) { QApplication a(argc, argv); QImage myImage; myImage.load("test.png"); QLabel myLabel; myLabel.setPixmap(QPixmap::fromImage(myImage)); myLabel.show(); return a.exec(); }
订阅 qtgui