def _moveback(self):
self.logger.info('moving back to previous state')
emdat = leginondata.NavigatorScopeEMData()
emdat.friendly_update(self.oldstate)
try:
self.instrument.setData(emdat)
except:
self.logger.exception('unable to set instrument')
return
for moveparam in moveparams:
scopeshift = {'moveparam': moveparam, 'x': None, 'y': None}
for axis in ('x', 'y'):
scopeshift[
axis] = newstate[moveparam][axis] - scope[moveparam][axis]
self.logger.info('change in %(moveparam)s: %(x).4e, %(y).4e' %
scopeshift)
# Avoid changing stage z according to imagedata here since it is handled
# before the move
stagenow = self.instrument.tem.StagePosition
newstate['stage position']['z'] = stagenow['z']
self.oldstate = self.newstate
self.newstate = newstate
emdat = leginondata.NavigatorScopeEMData()
emdat.friendly_update(newstate)
try:
self.instrument.setData(emdat)
except:
self.logger.exception(errstr % 'unable to set instrument')
return True
return False
def move_away_move_back(self, label, moves, distance, angle=None):
'''
Test reproducibility of the stage from position of a given distance.
'''
self.logger.info('start reproducibility test')
# initial move