Oh, and I'm just using numpy arrays to represent images, not QImages.
On Monday, April 1, 2019 at 10:53:44 AM UTC-4, Jim Crowell wrote:
>
> Do you just want to display the image, or have a plot on top of it? I use
> this utility function to set up both, with a histogram (only tested with
> PyQt5, 'pg' is of course pyqtgraph):
>
> To update the image data, you would later call
>
> widget.imageItem.setImage(...)
>
>
>
> def add_plot_image_histogram(widget, image_data, show_plot_axes=False,
> add_scale_buttons=False):
> """
> Add a PlotItem, attached ImageItem, and HistogramLUTWidget to a
> QWidget.
> (e.g. created in QTDesigner)
>
> The image is offset such that integer plot coordinates correspond
> to pixel centers rather than corners (which is the default).
>
> widget: a QWidget
> image_data: initial image data
> show_plot_axes: if False, hide all the plot axes. If True, show
> the default ('left' & 'bottom' are shown).
> add_scale_buttons: if True, add up- and down-triangle buttons to
> increase and decrease image color map limits and
> a square button for resetting them (see
> ImageItemUpdater).
>
> returns None
> """
>
> layout = QtGui.QGridLayout()
> widget.setLayout(layout)
> layout.setSpacing(0)
>
> widget.plotView = pg.GraphicsView()
> layout.addWidget(widget.plotView, 0, 0, 3, 1)
>
> widget.plotItem = pg.PlotItem()
> widget.plotItem.setAspectLocked()
> widget.plotItem.resize = widget.resize
> if not show_plot_axes:
> for axis in ('left','bottom','top','right'):
> widget.plotItem.showAxis(axis, False)
> widget.plotView.setCentralItem(widget.plotItem)
>
> widget.imageItem = pg.ImageItem(image=image_data)
> # to make plotted points _centered_ on corresponding image pixels
> widget.imageItem.translate(-.5,-.5)
> # put image _behind_ plot
> widget.imageItem.setZValue(-100)
> if add_scale_buttons:
> button_radius = 12 # pixels
> image_height = widget.imageItem.height()
>
> # 'up' button in upper-left corner
> widget.up_button = Button(button_radius, typ='tu', \
> parent=widget.imageItem)
> widget.up_button.setPos(0, 0.95*image_height)
>
> # 'down' button just below it
> widget.down_button = Button(button_radius, typ='td', \
> parent=widget.imageItem)
> widget.down_button.setPos(0, 0.80*image_height)
>
> # 'reset' (square) button in lower-left corner
> widget.reset_button = Button(button_radius, typ='s',
> parent=widget.imageItem)
>
> widget.plotItem.addItem(widget.imageItem)
>
> widget.histogramView = pg.GraphicsView()
>
>
>
>
> On Monday, April 1, 2019 at 7:35:26 AM UTC-4, Iman Afrouzeh wrote:
>>
>> Thank you very much for your response.
>> I have already done that but my problem is that I don't know how to call
>> the data in it in the python script.
>> I don't knwo what should I write instead if this:
>>
>> self.curve.setData(self.data)
>> self.l = (self.l+self.n)
>> self.line.setValue(self.bufferSize)
>>
>> ##########this is the place that I don't have any Idea to do
>>
>> I know it seems a silly question but I really couldn't find it with a lot
>> of searches.
>>
>> Thank you in advance for your help.
>>
>> On Monday, April 1, 2019 at 1:34:16 AM UTC+1, Patrick wrote:
>>>
>>> Hi,
>>>
>>> Have you followed the instructions here?
>>> http://www.pyqtgraph.org/documentation/how_to_use.html#embedding-widgets-inside-pyqt-applications
>>>
>>> Change your existing imgLabel to a GraphicsView object and then promote
>>> it to a PlotWidget or GraphicsLayoutWidget as described there.
>>>
>>> Patrick
>>>
>>> On Saturday, 30 March 2019 02:10:55 UTC+10:30, Iman Afrouzeh wrote:
>>>>
>>>> Dear all,
>>>> I am new in Python and maybe it seems that this question has been
>>>> answered in other ways before but I could not figure it out after 2 days.
>>>> I have a qtgraph plot and I want to show it in a QLabel, Qwidget or
>>>> Graphicsview in a gui that I made in Qtdesigner but I can not find a
>>>> direct
>>>> way that shows that graph. I am streaming a video from a camera and I
>>>> could
>>>> easily show it in my GUI but I am struggling with this one.
>>>> Thank you in advance for your help and comments.
>>>>
>>>> the problem is in showing
>>>>
>>>
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