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DIS(P) - display an image

Displays an image on the Lexidata. This will not often be necessary when using the high-level commands, since both GLANCE and RUN do an automatic display. NODISP=1 will disable automatic display. To reset type NODISP=0.


There are some, but default values will normally be acceptable. By default, the current image is displayed unscaled and centred in the centre of the Lexidata screen.


Adam:> DISP


When displaying an image that has a dimension larger than 512, the parts that lie outside the Lexidata are not displayed. To get round this problem it is best to rotate the image on the Lexidata (it has 640 pixels in the horizontal direction which is sufficient to show afull GEC CCD image). The rotation on the Lexidata is controlled by three parameters XYSWAP, LRSWAP and TBSWAP which by default are set to 300.

For the 235mm camera type


for the 500mm camera type


This will rotate the images so that longer wavelengths are to the right.

Use DIPARM to alter the scaling option (note that it is faster not to scale the data and much faster, when scaling, to leave LOW=0, since, where possible, scaling is done using shift operations.)

Wed Apr 6 22:56:39 BST 1994