solara filter doesn't work on leafmap

[rh-afk]

Dear All,

I have submit the same issue in the leafmap github:
opengeos/leafmap#580

Probably this is related with the issue in solara instead of in leafmap.

If anyone have suggestion for that issue, kindly please give some advise or hint.

thanks

[rh-afk]

Hi All,

Minimal code:

import leafmap
import numpy as np
import pandas as pd
import plotly.express as px

import solara

center_default = (53.2305799, 6.5323552)
zoom_default = 5
df=pd.DataFrame(data={'class': [1, 2,3,25], 'name':['A1','A2','A3','A4'],'Time': [10, 20,30,40],'lat':[40.741895,40.73098527339601,40.66905379201422,-0.22470045920182688],'lon':[-73.989308,-74.12560713330078,-74.1163374189453,114.96660935839847]},dtype=np.int8)
df

zoom = solara.reactive(zoom_default)
#center = solara.reactive(center_default)
marker_location = solara.reactive(center_default)

#map_name = solara.reactive(list(maps)[0])


@solara.component
def Page():
    
    solara.Title("Test")
    with solara.Column():
        filter, _set_filter = solara.use_cross_filter(id(df))
    
        
        with solara.Sidebar():
            solara.Markdown("## Test")
            solara.Markdown(f"Market set to: {marker_location.value}", style={"color": "#6e6e6e"})
            def location_changed(location):
        # do things with the location
             marker_location.set(location)
            def goto_marker():
                center.value = marker_location.value
                zoom.value = 13
            def reset_view():
                center.value = center_default
                zoom.value = zoom_default
            solara.SliderInt(label="Zoom level", value=zoom, min=1, max=16)
            with solara.Row():
                solara.Button(label="Zoom to marker", on_click=goto_marker)
                solara.Button(label="Reset view", on_click=reset_view)
    with solara.Card("Test Filter"):
            with solara.Columns([2, 2]):
                filter, _set_filter = solara.use_cross_filter(id(df))
               
                solara.CrossFilterSelect(df, "class")
                solara.CrossFilterSelect(df, "name")
                solara.CrossFilterSlider(df, "Time", mode=">=")
               
                dff = df.loc[filter] if filter is not None else df
            with solara.Columns([2, 2]):
                class Map(leafmap.Map):
                    def __init__(self, **kwargs):
                        super().__init__(**kwargs)
                        
                        self.add_points_from_xy(
                            dff,
                            x="lon",
                            y="lat",
                            spin=True,
                            add_legend=True,
                        )
               
                solara.CrossFilterDataFrame(dff)
                solara.FigurePlotly(px.histogram(dff, "Time"))
                
    with solara.Card("map"):
            with solara.Columns([1, 2],style={"min-width": "500px", "height": "500px"}):
                solara.Markdown("map")
                Map.element(  # type: ignore
                    #zoom=zoom.value,
                    #on_zoom=zoom.set,
                    #center=center.value,
                   # on_center=center.set,
                    scroll_wheel_zoom=True,
                    #crs=my_projection,
                    toolbar_control=False,
                #layers=[        
                )
        
@solara.component
def Layout(children):
    route, routes = solara.use_route()
    return solara.AppLayout(children=children)

Select or filter first data work normal but when select the rest data for example clas 2, 3 or 25 from the sample data) filter on map will not work and trigger error like this:
ERROR: Uncaught exception: Traceback (most recent call last):
File "/opt/tljh/user/lib/python3.9/site-packages/pandas/core/indexes/base.py", line 3803, in get_loc
return self._engine.get_loc(casted_key)
File "pandas/_libs/index.pyx", line 138, in pandas._libs.index.IndexEngine.get_loc
File "pandas/_libs/index.pyx", line 165, in pandas._libs.index.IndexEngine.get_loc
File "pandas/_libs/hashtable_class_helper.pxi", line 2263, in pandas._libs.hashtable.Int64HashTable.get_item
File "pandas/_libs/hashtable_class_helper.pxi", line 2273, in pandas._libs.hashtable.Int64HashTable.get_item
KeyError: 0

If anyone have suggestion for that issue, kindly please give some advise or hint.

thanks

[maartenbreddels]

Hi,

thanks you for opening this. Please make sure next time to have your code properly formatted, and ready to copy paste. I needed to guess the import and default values for center_default and zoom_default myself.
I modified your code example and I can run it now, but I do not know how to trigger the error.
Can you give me a very detailed description on how to trigger that error?

Regards,

Maarten