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Currently, doing something like
```python
df.group_by('a').agg((nw.col('b')+nw.col('c')).sum().alias('d'))
```
raises a warning for pandas-like dataframes
The solution to avoid the warning is t…
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Testar qual ferramenta vai ser mais eficiente no nosso caso.
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1. Create an environment with ThreadsX and DataFrames
2. Remove the files in ~/.julia/compiled/v#.#/DataValueInterfaces
3. Activate the environment
4. Invoke using ThreadsX
Invoking `using Threa…
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**Why do I even think it is necessary to maintain order?**
This matches the definition of dataframes from [the article](https://arxiv.org/pdf/2001.00888). If we take the approach of defining based …
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### Description of the desired feature
[Apache Arrow](https://arrow.apache.org/docs/index.html) is an in-memory format that is starting to become a common exchange format between different librarie…
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Under `test/select.jl`, several of the empty ByRow tests fail between lines 1579 and 1610.
Errors
```
empty ByRow: Test Failed at /Users/foo/Documents/julia/dev/DataFrames/test/select.jl:1579…
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### What and Why
Found this in `io.jl`.
Might already be done? @abelsiqueira
# TODO: Depending on the outcome of issue #294, this can be done more efficiently with DataFrames, e.g.,
# …
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The example of `@by` in the documentation gives an error: `ERROR: ArgumentError: column :x in returned data frame is not equal to grouping key :x
`
Maybe it was better ` :y_sum = sum(:y)`
```
usin…
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It looks like roughly half the package load time is due to the DataFrames dependency alone. For users who want to load Stan draws in a different format, this dependency is unnecessary. Could extension…
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fonsp updated
3 years ago