hide 'ROI' and 'Norm' buttons

[Karl Bedrich]

hey luke,

is there an easy way to hide the 'ROI' and 'Norm' buttons of the imageView (for example if you want to export the scene)?

is it possible to hide the histogramm and only to show the labeled colorbar (similar to the matpoltlib-images)?

...many questions today

tanks and best whishes,

karl

[Luke Campagnola]

On Fri, May 31, 2013 at 9:48 AM, Karl Bedrich <karlgeor...@gmail.com> wrote:

hey luke,

is there an easy way to hide the 'ROI' and 'Norm' buttons of the imageView (for example if you want to export the scene)?

Well there's a very direct way:

     imageview.ui.roiBtn.hide()

     imageview.ui.normBtn.hide()

.. but I should probably wrap these in a method. 

 

is it possible to hide the histogramm and only to show the labeled colorbar (similar to the matpoltlib-images)?

This is more tricky; I should definitely add a method for this.

However: ImageView is a very high-level widget. If all you really want is an image with basic color control, it might be easier to build this from the ground-up rather than trying to simplify ImageView:

import pyqtgraph as pg

pg.mkQApp()

win = pg.GraphicsLayoutWidget()

vb = win.addViewBox()

vb.setAspectLocked()

grad = pg.GradientEditorItem(orientation='right')

win.addItem(grad, 0, 1)

img = pg.ImageItem()

vb.addItem(img)

win.show()

def update():

    lut = grad.getLookupTable(512)

    img.setLookupTable(lut)

grad.sigGradientChanged.connect(update)

import numpy as np

img.setImage(np.random.normal(size=(100,100)))

This example has the added benefit that the image and gradient are in the same scene and thus can be exported together.

Luke