In my concatenated chart, I’m using an interval selection as a filter (see the GIF, Python code, and VL spec below). Even though my selection appears to be empty, my filtered chart still shows some data. What I’d like to achieve is to show the average temperature, for each station, based on the date ran…
Tag: vega-lite
Reference local .csv file in altair chart
I’m trying to use altair to visualize data, but I struggle to use it in the way I would like to use it: by not embedding the data inside the generated .html chart, but by referencing the local .csv file that contains the data. Otherwise, it would result in duplicating the data and therefore doubling the…
Altair Ridgeline doesn’t create a plot with nominal groups
I try to create a Ridgeline plot in altair. Let’s assume my dataframe consists of str and float columns: with values like I used code from Altair gallery to create my chart: https://altair-viz.github.io/gallery/ridgeline_plot.html. My code with changed data and column names: When I use row=alt.Row(̵…
How to correctly shift the baseline in an area plot to a particular y location and change the fill color correspondingly, in Altair?
I wanted to be able to do something like this – NOTE: The horizontal line you see is NOT at y=0, but y=1 But using color or fill encoding with condition does not really work in area charts. The closest I got was using yOffset (hit and trial for the perfect value) in mark_area but the biggest problem wit…