Experimental Physics and
Industrial Control System

D Peter Siddons <[email protected]> · Wed, 3 Feb 2016 11:37:23 -0500

Hi Andrew,

 I had installed it from source some time ago. I just svn'd the trunk

again and tried to build it in Creator. Creator complains about XStretch

and YStretch being undeclared in class 'QEImage'. Any suggestions?

Pete.

On 02/02/2016 09:24 PM, Andrew Rhyder wrote:

Hi Pete
Yes there is a way. The bad news is it involves a code change. The good news I just did it.
I've added a couple of properties (XStretch and YStretch) that you can use to stretch (or contract) the canvas used to present an image. So zoom, flip, rotate all do what they used to, but rather than then set the canvas to match the resultant image exactly, these properties will stretch the canvas (and the images drawn to it) as required. In your case you will can stretch the canvas vertically by, say, 10.0.
The latest source on sourceforge has this change. Have you build epicsQt from source, or did you use a prebuilt version?
Regards
Andrew

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of D Peter Siddons
Sent: Wednesday, 3 February 2016 7:05 AM
To: EPICS
Subject: epicsqt question

Is anyone out there working with epicsqt? I am trying to display a set
of 64 spectra (in Y) , each 4096 points (in X), as a QeImage. As you
might expect, it looks long and narrow. I would like to stretch the
pixels in the Y direction to make a more rectangular display. Is there a
way to persuade QeImage to do this?
Thanks,
Pete.

--
D. Peter Siddons
Detector Development Group Leader
Bldg. 535B
Photon Sciences Directorate,
Brookhaven National Laboratory
Upton, NY 11973

email: [email protected]
Phone: (631) 344-2738

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System