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/6228#issuecomment-1033982343,https://api.github.com/repos/pydata/xarray/issues/6228,1033982343,IC_kwDOAMm_X849oVGH,97615200,2022-02-09T16:58:33Z,2022-02-09T17:21:43Z,NONE,"```python
import xarray as xr
import cartopy.crs as ccrs
from cartopy import feature as cf
import matplotlib.pyplot as plt
import numpy as np

data=xr.open_dataset(""rainncreq.nc"")
print(data)
lon=data.lon[:]
lat=data.lat[:]
lev_2=data.lev_2[0]
rainnc=data.rainnc[:]
ax = plt.axes(projection=ccrs.PlateCarree())
rainnc.isel(time=0+8,lev_2=0).plot.pcolormesh(cmap='jet',vmax=100,vmin=0,add_colorbar=True);
ax.coastlines()
ax.add_feature(cf.BORDERS)
plt.savefig(""rain31.jpg"")
plt.show()
```
then it is not giving error just the data
but actually i want add the the time steps from 0 to 8
when i was 0+1+2+3....+8
then it is giving index error

```pytb
File ""/home/user/Documents/IGCAR/rain/rain.py"", line 36, in <module>
    rainnc.isel(time=0+1+2+3+4+5+6+7+8,lev_2=0).plot.pcolormesh(cmap='jet',vmax=100,vmin=0,add_colorbar=True);
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/dataarray.py"", line 1208, in isel
    variable = self._variable.isel(indexers, missing_dims=missing_dims)
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/variable.py"", line 1193, in isel
    return self[key]
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/variable.py"", line 786, in __getitem__
    data = as_indexable(self._data)[indexer]
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/indexing.py"", line 555, in __getitem__
    return type(self)(_wrap_numpy_scalars(self.array[key]))
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/indexing.py"", line 524, in __getitem__
    return type(self)(_wrap_numpy_scalars(self.array[key]))
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/indexing.py"", line 431, in __getitem__
    return type(self)(self.array, self._updated_key(indexer))
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/indexing.py"", line 403, in _updated_key
    full_key.append(_index_indexer_1d(k, next(iter_new_key), size))
  File ""/home/user/anaconda3/lib/python3.9/site-packages/xarray/core/indexing.py"", line 176, in _index_indexer_1d
    indexer = _expand_slice(old_indexer, size)[applied_indexer]
IndexError: index 36 is out of bounds for axis 0 with size 9
```

hope you understand my problem

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