rumbin opened a new issue, #26034:
URL: https://github.com/apache/superset/issues/26034
When using a _numeric_ column as the generic x-axis, the x-axis values
aren't linearly distributed along the x-axis but they are evenly distributed,
just as if they were categorical values
#### How to reproduce the bug
0. Have the `GENERIC_CHART_AXES` feature flag enabled
1. Create a dataset or a SQLLab query with numerical columns, e.g.
```sql
select
*
from (values
(1,1)
, (2,2)
, (5,5)
, (10,10)
) as v(x,y)
```
2. Visualize the query/dataset as bar chart (or line chart)
3. Use `x` as x-axis and, e.g., `max(y)` as y-axis
4. See that the x-axis values are shown with equal spacing instead of the
expected linear distribution of the x values
### Expected results
This is what it should look like and what it did correctly in Superset 2.0.1:

### Actual results
X-axis values are seemingly treated as categorical values:

Any distribution/scatter/histogram plots based on this functionality are
actually unusable due to this bug.
### Environment
(please complete the following information):
- browser type and version:
- superset version: 3.0.2rc1
- python version: `python --version`
- node.js version: `node -v`
- any feature flags active:
### Checklist
Make sure to follow these steps before submitting your issue - thank you!
- [ ] I have checked the superset logs for python stacktraces and included
it here as text if there are any.
- [ ] I have reproduced the issue with at least the latest released version
of superset.
- [ ] I have checked the issue tracker for the same issue and I haven't
found one similar.
### Additional context
Add any other context about the problem here.
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