What is the altair equivalent of st.line_chart?

Using Streamlit
1

Per the documentation, st.line_chart is a wrapper on an altair function. What is the raw altair code that will exactly replicate what st.line_chart does?

Thanks

2

You can find more info here and here for how st.line_chart() is implemented!

3

Thank you for the reply.

Do you know of anyway to adjust the scale of the line chart?The default is 0 to 1, but it should be the minimum y-axis point to the maximum y-axis point?

Thanks

4

Yes!
So I have found that st.line_chart() works really well when I don’t need to be too specific about how the graph exactly looks, but when I need to do things like make the scale something very specific, I’ll use altair directly. So an example for changing the scale might be:

alt.Chart(my_data_frame).mark_line().encode(
    x = alt.X('my_column_name')
    y = alt.Y('my_y_col_name', scale=alt.Scale(domain=[0, 50]))
)

where 50 is the upper bound.

Also line_chart should automatically adjust the upper bound for you, does it only go to 0,1?

5

Thanks so much for the help thus far, unfortunately altair is just out of the range of my current skillset so I will have to find another solution. I also thought that the data would automatically scale, but nope.

I posted a picture of this problem in a different post: Scale y-axis using st.line_chart [Please?]

6

Ah ok! Well we’ll try to answer your question in the other post after you post your code.

7

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