emcSetBeamShift

NAME

emcSetBeamShift- Change the beam shift

SYNOPSIS

#include "emc.h"
int emcSetBeamShift(EM *em, int units, int correction, int relative,
                    double x, double y);

DESCRIPTION

emcSetBeamShift() sets the current beam shift parameters

*em

points to an EM control and communications structure that was returned by the emcOpen() call.

units

the units the values are expressed in:

UNCALIBRATED_UNITS	Native image shift units of instrument
ANGSTROM_UNITS	Units are measured in angstroms
NANOMETER_UNITS	Units are measured in nanometers
MICRON_UNITS	Units are measured in microns
PIXEL_UNITS	Units are measured in pixels in current camera

correction

Boolean value which enables correction of known side effects of this function.

relative

Flags what the high tension change is relative to:

EMC_RELATIVE	Image shift change measured relative to current value.
EMC_ABSOLUTE	Image shift changed measured relative to "no image shift" (absolute shift)

x

the amount of X-axis image shift

y

the amount of Y-axis image shift

 

DIAGNOSTICS

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