[GitHub] [superset] GerbenvdHuizen opened a new issue, #22061: Plotting data with different time granularity in a time series line chart does not always render the lines

[GitBox]

GerbenvdHuizen opened a new issue, #22061:
URL: https://github.com/apache/superset/issues/22061

   When plotting data with hourly and daily granularity in a timeseries line 
chart, the lines of daily data will not render when the time grain of the chart 
is set to hourly. This makes it difficult to compare daily and hourly data in 
the same chart. We would expect to at least have an option to render lines 
between existing data points, despite what time grain is set.
   
   In the example screenshot you can see the time grain is set to hourly, so 
the daily data points do not have a drawn/rendered line.
    
   #### How to reproduce the bug
   
   1. Create a chart timeseries line chart with both daily and hourly data 
(granularity).
   2. Set time grain of the chart to hourly
   3. The chart will only plot lines for the hourly data, and show only data 
points for the daily data.
   
   ### Expected results
   
   Have an option to draw/render lines between data points despite what time 
grain is currently set on a graph
   
   ### Actual results
   
   If time grain is set for example to hourly, the chart will only render lines 
for hourly data not for daily (or weekly, monthly etc.).
   
   #### Screenshots
   
   ![Screenshot 2022-11-08 at 11 07 
02](https://user-images.githubusercontent.com/7879764/200536526-0b1468f9-2521-4bc3-b22a-a8e17a82af85.png)
   
   ### Environment
   
   - Superset version: 2.0.0 (we're using the `apache/superset:2.0.0` Docker 
image)
   - In case it matters we're using Spark Thriftserver as our SQL engine
   
   ```
   FEATURE_FLAGS = {
       "SQLLAB_BACKEND_PERSISTENCE": True,
       "ENABLE_TEMPLATE_PROCESSING": True,
       "ENABLE_TEMPLATE_REMOVE_FILTERS": True,
   }
   ```
   
   ### Checklist
   
   - [x] I have checked the superset logs for python stacktraces and included 
it here as text if there are any.
   - [x] I have reproduced the issue with at least the latest released version 
of superset.
   - [x] I have checked the issue tracker for the same issue and I haven't 
found one similar.
   
   


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