[bug(?)] Markers not showing when changing symbol in Scattermapbox

I was trying to do a Scattermapbox with different marker symbols, and they didn't render, at first I thought it was a Dash problem, but then I reproduce the same problem without dash (just plotly).
You can find some code to reproduce the error in the following link:

stack overflow question

Hi there,
You can find more options about setting the marker for scattermapbox here: https://plot.ly/python/reference/#scattermapbox-marker
Note, this trace does not behave exactly like typical plotly.js scatter traces as it uses mapbox: https://www.mapbox.com/

Thank you!
Just to clarify, the issue was that I was setting a color and a size, to a symbol which isn't a circle, so it wasn't working properly?

no problem, to help clarify:
https://plot.ly/python/reference/#scattermapbox-marker-symbol: Sets the marker symbol. Full list: https://www.mapbox.com/maki-icons/ Note that the array marker.color and marker.size are only available for "circle" symbols.

so the 2 issues you may be running into are:
a. color and size are only available when symbol is set to circle.
b. the typical "plotly" symbols, (ie: https://plot.ly/python/reference/#scatter-marker-symbol) are not available for this trace type, instead you can find options and further instructions at the mapbox link: https://www.mapbox.com/maki-icons/

I am not trying to set color and size but still the custom markers do not render when I select something else than the default, for example "diamond". Can we re-open this issue?

Description

I have same problem in R. I have a shiny app w/ mapbox, and a choropleth. When I add markers, I get discrete colors just fine, but two things I can't do:

Not related to this issue: I can't get continuous color scale
Related: I can't get symbols to show up

Code

    fig = plot_mapbox()
    # POLYGONS
      fig = fig %>% add_sf(
        data=districts,
        split=~DISTRICT,
        color=~log10(get(
          input$multi_indicator_districts.selectors.colorBy)),
        alpha=0.7,
        showlegend=FALSE)
    fig = fig %>% add_trace(
      type='scattermapbox',
      mode='markers',
      data=facilities,
      x=~longitude,
      y=~latitude,
      # split=~tier,  # discrete colors; renders just fine
      symbol=~tier,
      alpha=0.9,
      showlegend=TRUE)
    
    fig = fig %>% layout(
      mapbox=list(
        zoom=4,
        style='open-street-map'))

W/ symbols off, markers appear

W/ symbols on, don't appear

Strangely, it looks like it's also trying to color the symbols even though I'm not asking it to do so.

I know this is over two years later, but I had the same issue recently and found my solution. You have the wrong mapbox style selected. The mapbox symbols do not work with the "carto-positron" style or "open-street-map".

In order for symbols to work, you need to use the following mapbox styles (in addition to having a free Mapbox account with a public key):

basic
streets
outdoors
light
dark
satellite
satellite-streets

Reference
https://plotly.com/python/scattermapbox/#set-marker-symbols

I know this is over two years later, but I had the same issue recently and found my solution. You have the wrong mapbox style selected. The mapbox symbols do not work with the "carto-positron" style or "open-street-map".

In order for symbols to work, you need to use the following mapbox styles (in addition to having a free Mapbox account with a public key):

basic

streets

outdoors

light

dark

satellite

satellite-streets

Reference https://plotly.com/python/scattermapbox/#set-marker-symbols

It doesn't work. Only circle is rendered.

@Sajjad-Mahmoudi

I'm working on this project anymore but I can forward the solution if there is one.
@Sajjad-Mahmoudi No luck, eh? Did you try every one of those options?

@Sajjad-Mahmoudi

I'm working on this project anymore but I can forward the solution if there is one. @Sajjad-Mahmoudi No luck, eh? Did you try every one of those options? @joeflack4

Hi, below is the code snippet:
px.set_mapbox_access_token(my_token)
fig = px.scatter_mapbox(data_frame=dff_exploded,
lat="lat", lon="lon",
zoom=6,
mapbox_style="outdoors", # "basic", "outdoors", "satellite-streets", "light"
# hover_name="facilities" + ": " + "n_trials",
width=1500,
height=700,
hover_data={'lat': False, 'lon': False, 'facilities': True, 'n_trials': True},
)
fig.update_traces(cluster=dict(enabled=True,
maxzoom=12,
color='#FF3333',
size=15,
opacity=1,
),
marker=dict(opacity=1,
symbol='circle', # marker
size=10,
color='blue',
),
hovertemplate="%{customdata[2]}: %{customdata[3]}"
)
So, I tried all the recommended solutions to change the marker from "circle" to "marker" and some others, but only "circle" marker is overlayed on the map.

Try removing the mapbox info from the original px.scatter_mapbox call. Also be sure the map_box style works with different symbols. Not all do. Also, not all of the symbols are currently working. I know "streets" and "triangle" work together, so I've included it below in an excerpt of my working code.

fig.add_trace(
                go.Scattermapbox(
                    lat=df.lat,
                    lon=df.lon,
                    customdata=df[["name", "address"]],
                    hovertemplate="%{customdata[0]}<br>%{customdata[1]}",
                    name="",
                    mode="markers",
                    marker=dict(
                        symbol="triangle",
                        size=8,
                    ),
                    showlegend=False,
                ),
            )
fig.update_layout(
            mapbox=dict(
                accesstoken=mapbox_token,
            ),
            mapbox_style="streets",
        )

I think raising a warning for the user when they specify both symbol and color attributes for their markers would be a nice addition in this case.

This issue is already closed, but I just wanted to leave a note that Maki symbols should work smoothly in plotly.py v7.0.0 and above. See this comment for more information.

Note that Mapbox traces have been replaced by Map traces. In most cases, replacing the word mapbox/Mapbox with map/Map everywhere it appears, and removing references to the Mapbox access token, should be all that's needed to migrate. See this docs page for details.

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[bug(?)] Markers not showing when changing symbol in Scattermapbox #891

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[bug(?)] Markers not showing when changing symbol in Scattermapbox #891

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cldougl commented on Dec 4, 2017

HaraldHeitmann commented on Dec 4, 2017

cldougl commented on Dec 4, 2017

andreapiso commented on Oct 23, 2018

joeflack4 commented on May 20, 2021

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W/ symbols off, markers appear

W/ symbols on, don't appear

dancassin commented on Jul 6, 2023

Sajjad-Mahmoudi commented on Aug 24, 2023

joeflack4 commented on Aug 25, 2023

Sajjad-Mahmoudi commented on Aug 25, 2023

dancassin commented on Aug 25, 2023

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