spatial subset failed

[barsten]

download AOT - success
download cfc - success
open AOT - success
open cfc - success
spatial subset AOT - success
spatial subset cfc (same as AOT) - fail

---

Cate Desktop, version 0.9.0-dev.1

integer division or modulo by zero

An error (code 10) occurred while executing a backend process:

Traceback (most recent call last):
  File "C:\Users\carsten\cate\lib\site-packages\cate\util\web\jsonrpchandler.py", line 163, in send_service_method_result
    result = future.result()
  File "C:\Users\carsten\cate\lib\concurrent\futures\_base.py", line 398, in result
    return self.__get_result()
  File "C:\Users\carsten\cate\lib\concurrent\futures\_base.py", line 357, in __get_result
    raise self._exception
  File "C:\Users\carsten\cate\lib\concurrent\futures\thread.py", line 55, in run
    result = self.fn(*self.args, **self.kwargs)
  File "C:\Users\carsten\cate\lib\site-packages\cate\util\web\jsonrpchandler.py", line 216, in call_service_method
    result = method(*method_params, monitor=monitor)
  File "C:\Users\carsten\cate\lib\site-packages\cate\webapi\websocket.py", line 294, in set_workspace_resource
    return workspace.to_json_dict()
  File "C:\Users\carsten\cate\lib\site-packages\cate\core\workspace.py", line 205, in to_json_dict
    ('resources', self._resources_to_json_list())
  File "C:\Users\carsten\cate\lib\site-packages\cate\core\workspace.py", line 217, in _resources_to_json_list
    resource_descriptor = self._get_resource_descriptor(res_id, res_update_count, res_name, resource)
  File "C:\Users\carsten\cate\lib\site-packages\cate\core\workspace.py", line 237, in _get_resource_descriptor
    variable_descriptors.append(self._get_xarray_variable_descriptor(variable))
  File "C:\Users\carsten\cate\lib\site-packages\cate\core\workspace.py", line 298, in _get_xarray_variable_descriptor
    image_config = self._get_variable_image_config(variable)
  File "C:\Users\carsten\cate\lib\site-packages\cate\core\workspace.py", line 335, in _get_variable_image_config
    max_size, tile_size, num_level_zero_tiles, num_levels = ImagePyramid.compute_layout(array=variable)
  File "C:\Users\carsten\cate\lib\site-packages\cate\util\im\image.py", line 789, in compute_layout
    num_level_zero_tiles = cardinal_div_round(max_width, tile_width  2 * (num_levels - 1)), \
  File "C:\Users\carsten\cate\lib\site-packages\cate\util\im\utils.py", line 66, in cardinal_div_round
    return int(num + denom - 1) // int(denom)
ZeroDivisionError: integer division or modulo by zero

[mzuehlke]

To reproduce I need to following details:

• which cfc datasource for download
• the constraints while downloading (time, region, variables), if any
• the region in subset

[forman]

Even without knowing any data source details, int(denom) must not be zero.

[forman]

Still trying to get into the state where one of the tile width or height is zero. When trying to create very small subsets I get another error:

Cate Desktop, version 0.9.0-dev.2

index 0 is out of bounds for axis 0 with size 0

An error (code 10) occurred while executing a backend process:

Traceback (most recent call last):
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\util\web\jsonrpchandler.py", line 163, in send_service_method_result
    result = future.result()
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\concurrent\futures\_base.py", line 398, in result
    return self.__get_result()
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\concurrent\futures\_base.py", line 357, in __get_result
    raise self._exception
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\concurrent\futures\thread.py", line 55, in run
    result = self.fn(*self.args, **self.kwargs)
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\util\web\jsonrpchandler.py", line 216, in call_service_method
    result = method(*method_params, monitor=monitor)
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\webapi\websocket.py", line 294, in set_workspace_resource
    return workspace.to_json_dict()
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\core\workspace.py", line 205, in to_json_dict
    ('resources', self._resources_to_json_list())
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\core\workspace.py", line 217, in _resources_to_json_list
    resource_descriptor = self._get_resource_descriptor(res_id, res_update_count, res_name, resource)
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\core\workspace.py", line 238, in _get_resource_descriptor
    variable_descriptors.append(self._get_xarray_variable_descriptor(variable))
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\core\workspace.py", line 306, in _get_xarray_variable_descriptor
    image_config = self._get_variable_image_config(variable)
  File "C:\Users\Norman\IdeaProjects\ccitools\cate-core\cate\core\workspace.py", line 331, in _get_variable_image_config
    west = min(lons[0], lons[-1]) - lon_delta
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\xarray\core\dataarray.py", line 472, in __getitem__
    return self.isel(**self._item_key_to_dict(key))
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\xarray\core\dataarray.py", line 679, in isel
    ds = self._to_temp_dataset().isel(drop=drop, **indexers)
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\xarray\core\dataset.py", line 1143, in isel
    new_var = var.isel(**var_indexers)
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\xarray\core\variable.py", line 570, in isel
    return self[tuple(key)]
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\xarray\core\variable.py", line 1225, in __getitem__
    values = self._indexable_data[key]
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\xarray\core\indexing.py", line 545, in __getitem__
    result = self.array[key]
  File "C:\Users\Norman\Miniconda3\envs\cate\lib\site-packages\pandas\core\indexes\base.py", line 1689, in __getitem__
    return getitem(key)
IndexError: index 0 is out of bounds for axis 0 with size 0

[forman]

Fixed the above problem.

[forman]

Closing this as we cannot reproduce it anymore. We may reopen later.