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This issue describes a possibility to enable multiple dataframe API compatibility through (or referencing) https://github.com/data-apis/dataframe-api . Currently the project is compatible with Pandas …
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#### Correlation
I would really like to see the original `df.corr()` from Polars, because now we only have `df.pearsonCorr(a, b)`, which need 2 columns. I would like to have `df.corr()`, which retu…
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Dataset: [output.jsonl.txt](https://github.com/user-attachments/files/17822553/output.jsonl.txt)
```Julia
import DataFrames
import JSON
import Statistics
function sgm(x::Vector{BigFloat}; sh::B…
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This would be useful, for example, when I really want to be able to use a design matrix as both a raw numpy array and a pandas dataframe.
I suppose I could specify `return_type="dataframe"` and then …
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### Describe the bug
df.parse_sql_expr does not handle expression aliases, for expressions like
```rust
df.parse_sql_expr("col0 as new_col0")
```
it will return `col(`col0`) expression
### …
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### Description
In the actual scenario, I consider how to calculate the spearman correlation matrix with a dataframe of 2 million multiplied by 4000 variables, and the calculation efficiency is hi…
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As you can see…
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### Checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars.
### Reprodu…
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### What happened?
We're mainly using NWB-Zarr and found that reading the units table and rendering as a dataframe is prohibitevly slow. This is mainly due to the `electrodes` column that copies th…
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The [dataframe interchange protocol](https://github.com/data-apis/dataframe-api/) is intended to be a specification for interchange between different dataframe types. However, support for it is spotty…