philippjfr
commented
1 year ago Thanks for reporting, very odd indeed. I'll take a look.
Open edwardransome opened 1 year ago
philippjfr
commented
1 year ago Thanks for reporting, very odd indeed. I'll take a look.
edwardransome
commented
1 year ago An update, a similar problem also occurs when using an [R,G,B] array column to define colours.
import pydeck as pdk
import panel as pn
data_dict = {
'name':['a','b','c','d'],
'coordinates':[
[[6.1,46.1],[6.2,46.2]],
[[6.3,46.3],[6.3,46.4],[6.4,46.4]],
[[6.01,46.01],[6.01,46.02],[6.02,46.02]],
[[6.03,46.03],[6.03, 46.04],[6.04,46.04]]
]
}
df = pd.DataFrame(data_dict)
df['colour'] = [[250,8,8]]*len(df)
layer = pdk.Layer(
type="PathLayer",
data=df,
width_scale=20,
get_path='coordinates',
get_width=5,
get_color='colour',
width_min_pixels=2,
visible=True
)
INITIAL_VIEW_STATE = pdk.ViewState(
latitude=46.1,
longitude=6.1,
zoom=13,
max_zoom=24,
bearing=0,
)
deck = pdk.Deck(
#map_provider="mapbox",
map_style='mapbox://styles/mapbox/light-v10',
initial_view_state=INITIAL_VIEW_STATE,
api_keys={'mapbox':'pk.eyJ1IjoicGFuZWxvcmciLCJhIjoiY2s1enA3ejhyMWhmZjNobjM1NXhtbWRrMyJ9.B_frQsAVepGIe-HiOJeqvQ'},
layers=[layer],
tooltip=True
)
#Visible lines and colour
deck.to_html('example.html')
#Luma.gl assertion error, no lines
deck_pane = pn.pane.DeckGL(deck, sizing_mode='stretch_both', margin=0)
deck_pane.show()The exported html will show red paths, but the pane displayed by Panel will show no lines. A workaround is to use one column per colour with
layer = pdk.Layer(
type="PathLayer",
data=df,
width_scale=20,
get_path='coordinates',
get_width=5,
get_color="[colourR, colourG, colourB]",
width_min_pixels=2,
visible=True
)data_dict = {
'name':['a','b','c','d'],
'coordinates':[
[[6.1,46.1],[6.2,46.2]],
[[6.3,46.3],[6.3,46.4],[6.4,46.4]],
[[6.01,46.01],[6.01,46.02],[6.02,46.02]],
[[6.03,46.03],[6.03, 46.04],[6.04,46.04]]
],
'colour':[[123,0,0],[123,0,0],[123,0,0],[123,0,0,255]]
}Just like for coordinates, adding an alpha coordinate to one of the [R,G,B] arrays so that they are not all the same length fixes the Panel display
ALL software version info
Win10, Python 3.10.2, Firefox 104.0.2
panel 0.13.0a37 pandas 1.4.1 pydeck 0.7.1
Description of expected behavior and the observed behavior
Expected: Panel can wrap the pydeck deck and display it without issue. Observed: Wrapping a pydeck deck containing a PathLayer with all paths having the same number of points causes an assertion error. Adding a single point to the first path will remove the error.
Complete, minimal, self-contained example code that reproduces the issue
Stack traceback and/or browser JavaScript console output
Screenshots or screencasts of the bug in action