Importing and displaying a .jpeg using pyqtgraph

[Francisco Gonzalez-Longatt]

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

[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