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Performance optimization

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Use lists as intermediate data structure to avoid lots of numpy array
allocations
This commit is contained in:
usov_i 2022-04-20 13:15:48 +02:00
parent 49ff319230
commit 098314e30d
1 changed files with 21 additions and 14 deletions
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35
pyzebra/ccl_process.py
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@ -169,23 +169,26 @@ def merge_h5_scans(scan_into, scan_from):
scan_motor = scan_into["scan_motor"] # the same as scan_from["scan_motor"]
pos_all = scan_into["init_scan"][scan_motor]
val_all = scan_into["init_scan"]["counts"]
err_all = scan_into["init_scan"]["counts_err"] ** 2
pos_all = [scan_into["init_scan"][scan_motor]]
val_all = [scan_into["init_scan"]["counts"]]
err_all = [scan_into["init_scan"]["counts_err"] ** 2]
for scan in scan_into["merged_scans"]:
pos_all = np.append(pos_all, scan[scan_motor])
val_all = np.concatenate((val_all, scan["counts"]))
err_all = np.concatenate((err_all, scan["counts_err"] ** 2))
pos_all.append(scan[scan_motor])
val_all.append(scan["counts"])
err_all.append(scan["counts_err"] ** 2)
pos_all = np.concatenate(pos_all)
val_all = np.concatenate(val_all)
err_all = np.concatenate(err_all)
sort_index = np.argsort(pos_all)
pos_all = pos_all[sort_index]
val_all = val_all[sort_index]
err_all = err_all[sort_index]
pos_tmp = pos_all[:1]
val_tmp = val_all[:1]
err_tmp = err_all[:1]
num_tmp = np.array([1])
pos_tmp = [pos_all[0]]
val_tmp = [val_all[:1]]
err_tmp = [err_all[:1]]
num_tmp = [1]
for pos, val, err in zip(pos_all[1:], val_all[1:], err_all[1:]):
if pos - pos_tmp[-1] < MOTOR_POS_PRECISION:
# the repeated motor position
@ -194,10 +197,14 @@ def merge_h5_scans(scan_into, scan_from):
num_tmp[-1] += 1
else:
# a new motor position
pos_tmp = np.append(pos_tmp, pos)
val_tmp = np.concatenate((val_tmp, val[None, :]))
err_tmp = np.concatenate((err_tmp, err[None, :]))
num_tmp = np.append(num_tmp, 1)
pos_tmp.append(pos)
val_tmp.append(val[None, :])
err_tmp.append(err[None, :])
num_tmp.append(1)
pos_tmp = np.array(pos_tmp)
val_tmp = np.concatenate(val_tmp)
err_tmp = np.concatenate(err_tmp)
num_tmp = np.array(num_tmp)
scan_into[scan_motor] = pos_tmp
scan_into["counts"] = val_tmp / num_tmp[:, None, None]