The following command will display a .qp file in the original detector coordinates. In this case a ROSAT PSPC image is used so it is also blocked to a reasonable size:
xp> xdisplay ``xdata$rp110590.qp[block=30, key=(detx, dety)]''
Alternatively, higher resolution can be obtained with the following command which displays the bottom left hand quadrant of a array:
xp> xdisplay ``xdata$rp110590.qp[block=15, key=(detx, dety)] [1:512,1:512]''