[pyqtgraph] Re: Importing and displaying a .jpeg using pyqtgraph

[Kenneth Lyons]

An ImageItem will do what you want. Here's an example:

import pyqtgraph as pg
import numpy as np

app = pg.mkQApp()

# load your image into a numpy array here...
img_data = np.random.randn(10, 10)
img = pg.ImageItem(img_data)

vb = pg.ViewBox(lockAspect=True, enableMouse=False, enableMenu=False)
vb.addItem(img)

gv = pg.GraphicsView()
gv.setCentralWidget(vb)
gv.show()

app.exec_()

High-level documentation on how to use all of these graphics items and such 
is a bit sparse, but there are examples demonstrating usage of most of them 
(here: https://github.com/pyqtgraph/pyqtgraph/tree/develop/examples). It 
might also help to read through some of Qt's graphics view framework 
documentation to get familiar with the terminology used: 
https://doc.qt.io/qt-5/graphicsview.html

On Wednesday, May 15, 2019 at 2:20:45 AM UTC-7, Francisco Gonzalez-Longatt 
wrote:
>
> Dear Group
> I am not a top expert in python or even pyqtgraph. However, I am 
> developing a small project where I need to present a .jpeg. Could you 
> please how to do so...
> I am using this,
>
> import sys 
> import pyqtgraph as pg
> import numpy as np
> from PIL import Image
> import numpy as np
>
>
>
> ImgFilename = 'Mapa de Norway.jpg'
> def run():
>     if not QApplication.instance():
>         app = QApplication(sys.argv)
>     else:
>         app = QApplication.instance() 
>     app.exec_()
> i = Image.open(ImgFilename)
> i = i.transpose(Image.FLIP_TOP_BOTTOM)
> i = i.rotate(-45)
> imgg = np.asarray(i)
> #pg.image(imgg)   # FUNCIONA
>
>
> imv = pg.ImageView()
> imv.show()
> imv.setImage(imgg)
>
> However, I do not need Histogram, ROI, Menu, etc...It is just presenting 
> the jpeg.
> Looking forward to your advice, responses are much appreciated!
> FGL
>
>
>

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