My callback is not plotting correctly

Dash Python
1

plot
plot678×546 9.88 KB

Save my friends.
This is my first post, I would like to ask a question about line chart.

Below is my data frame:

  seller                                MonthYear               qtitem
0 CARLA                                 2020-11                    29606.085
1 CARLA                                 2020-12                    55669,940
2 CARLA                                 2021-01                    12620,795
3 EDSON MARTINS                         2020-11                     4172,595
4 EDSON MARTINS                         2020-12                    15973.180
.. ... ... ...
61 SUPERVISOR                           2020-12                      797,311
62 SUPERVISOR                           2021-01                       36,000
63 VANDERSON                            2021-01                     1819,240
64 VANDERSON                            2021-02                     8321.185
65 VANDERSON                            2021-03                     1282,000

Below is my callback

@app.callback(
    Output('my_graphic', 'figure'),
    [
        Input('sellers', 'value'),
    ]
)
def my_callback(input_data):
    graph = {
        'date': []
    }

    for x in input_data:
        print(movement_per_month_vendors)
        graph['date'].append(
            {
                'y': movement_by_months_vendedores.values,
                'x': movement_by_months_vendedores.index,
                'name': x,
                'type': 'line'
            },
        )
    return graph

Apparently it works, however, I should see lines from a certain seller in a certain month, but that’s not what I see.

Can someone help me?

2

Hi @EliasCoutinho !

I think you are not specifying the callback right because in the loop you are not filtering the data frame to create one trace per each person, you are creating only one trace (the same trace) multiple times with all the people in the dataframe. That’s why you only get one line.

Also, may I ask why are you updating 'date' instead of 'data'?

3

I think you are not specifying the callback right because in the loop you are not filtering the data frame to create one trace per each person, you are creating only one trace (the same trace) multiple times with all the people in the dataframe. That’s why you only get one line.

Can you help me? I have no idea where the error is.

Also, may I ask why are you updating 'date' instead of 'data'?
It was the translator’s fault. But it is correct here in my code.

My code is tiny and attached, I am still learning how it all works.
All I wanted to do was filter and show each seller on one line.

(Attachment ProjetoDash.rar is missing)