Hi,
I have a puzzle and was wondering if anyone can shed any light on it. Why in calcimage or surfer when I load a grid or prbimage map file are all the numbers integers whereas when I load the map as a image map in surfer each pixcel has decimals.
My question is which is the real number, when does rounding occur?
The x-ray intensities are collected as integers and then converted into cps - so in some cases this would create decimals e.g. 0.3 millisec dwell but if its 0.1 millisec dwell as in the case I was loooking at how do you get decimals
Thanks
Ben
Quote from: Ben Buse on May 18, 2015, 01:58:06 AM
Hi,
I have a puzzle and was wondering if anyone can shed any light on it. Why in calcimage or surfer when I load a grid or prbimage map file are all the numbers integers whereas when I load the map as a image map in surfer each pixcel has decimals.
My question is which is the real number, when does rounding occur?
The x-ray intensities are collected as integers and then converted into cps - so in some cases this would create decimals e.g. 0.3 millisec dwell but if its 0.1 millisec dwell as in the case I was loooking at how do you get decimals
Thanks
Ben
Hi Ben,
Yes, I see it too. Not sure why. If I check the Interpolate Pixels checkbox, the image becomes a little more smoothed as expected, but I don't know why there are decimals displayed when the checkbox is unchecked.
Good question for Golden Software I think. Their forum is here:
http://www.goldensoftware.com/forum/
Please let us know what you find out.
john
Hi,
Reply to post on surfer forum explains it.
http://www.goldensoftware.com/forum/viewtopic.php?f=1&t=27119&p=47890#p47890
As I currently understand it with interpolate pixcel turned off the color of each pixcel correspondes to the value. But the z value read at the bottom of the screen or plotted on a line profile uses the underlying contouring applied automaticaly to all grid images. This is seen when you create a simply grid
(https://dl.dropboxusercontent.com/u/34045548/grid2.jpg)
Ben