issue_comments: 1292216344
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| html_url | issue_url | id | node_id | user | created_at | updated_at | author_association | body | reactions | performed_via_github_app | issue |
|---|---|---|---|---|---|---|---|---|---|---|---|
| https://github.com/pydata/xarray/issues/7224#issuecomment-1292216344 | https://api.github.com/repos/pydata/xarray/issues/7224 | 1292216344 | IC_kwDOAMm_X85NBagY | 14371165 | 2022-10-26T15:21:54Z | 2022-10-26T15:21:54Z | MEMBER | I have thought a little about this as well and went and looked in my old code. Creating a
```python
import numpy as np
import xarray as xr
from time import perf_counter
# %% Inputs
names = np.core.defchararray.add("long_variable_name", np.arange(0, 100).astype(str))
time = np.array([0, 1])
coords = dict(time=time)
value = np.array(["0", "b"], dtype=str)
# %% Insert to Dataset with DataArray:
time_start = perf_counter()
ds = xr.Dataset(coords=coords)
for v in names:
ds[v] = xr.DataArray(data=value, coords=coords)
time_end = perf_counter()
time_elapsed = time_end - time_start
print("Insert to Dataset with DataArray:", time_elapsed)
# %% Insert to Dataset with Variable:
time_start = perf_counter()
ds = xr.Dataset(coords=coords)
for v in names:
ds[v] = xr.Variable("time", value)
time_end = perf_counter()
time_elapsed = time_end - time_start
print("Insert to Dataset with Variable:", time_elapsed)
# %% Insert to Dataset with tuple:
time_start = perf_counter()
ds = xr.Dataset(coords=coords)
for v in names:
ds[v] = ("time", value)
time_end = perf_counter()
time_elapsed = time_end - time_start
print("Insert to Dataset with tuple:", time_elapsed)
# %% Dict of DataArray then create Dataset:
time_start = perf_counter()
data_vars = dict()
for v in names:
data_vars[v] = xr.DataArray(data=value, coords=coords)
ds = xr.Dataset(data_vars=data_vars, coords=coords)
time_end = perf_counter()
time_elapsed = time_end - time_start
print("Dict of DataArrays then create Dataset:", time_elapsed)
# %% Dict of Variables then create Dataset:
time_start = perf_counter()
data_vars = dict()
for v in names:
data_vars[v] = xr.Variable("time", value)
ds = xr.Dataset(data_vars=data_vars, coords=coords)
time_end = perf_counter()
time_elapsed = time_end - time_start
print("Dict of Variables then create Dataset:", time_elapsed)
# %% Dict of tuples then create Dataset:
time_start = perf_counter()
data_vars = dict()
for v in names:
data_vars[v] = ("time", value)
ds = xr.Dataset(data_vars=data_vars, coords=coords)
time_end = perf_counter()
time_elapsed = time_end - time_start
print("Dict of tuples then create Dataset:", time_elapsed)
```
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