How to add images instead of dots in a plotly scatter plot (python) [duplicate]

Question

Lets say I have this scatter plot in plotly:

import plotly.express as px
fig = px.scatter(x=[0, 1, 2, 3, 4], y=[0, 1, 4, 9, 16])
fig.show()

But instead of the dots I want to add different Images on those particular positions. Something like this:

Is that possible with plotly? I know that you can add Images but I dont know how to pass the exact coordinates of position where the images should be shown.

I apprecaite your time! Thank you.

Rob Raymond · Accepted Answer · 2021-11-21 17:29:27Z

9

a few points on answer
- no reference was provided to images to use, so downloaded some from kaggle. Couldn't find emojis. This bulks up code to do this...
- Plotly Express is used without a data frame in question. So have kept to this. This then means loop through x&y values in trace to get position of images
- effectively image used is random, could be selected based on features of data

import plotly.express as px
import kaggle.cli
import sys, requests
from pathlib import Path
from zipfile import ZipFile
import urllib
from PIL import Image

# fmt: off
# download some images to demonstrate
url = "https://www.kaggle.com/anzhemeng/nfl-team-logos"
sys.argv = [sys.argv[0]] + f"datasets download {urllib.parse.urlparse(url).path[1:]}".split(" ")
kaggle.cli.main()
zfile = ZipFile(f'{urllib.parse.urlparse(url).path.split("/")[-1]}.zip')
# fmt: on
zfile.extractall("nfl-logos")

fig = px.scatter(x=[0, 1, 2, 3, 4], y=[0, 1, 4, 9, 16])

# question did not use a dataframe,  so will use x & y from the figure trace
# just a selection of images, used NFL images given don't have emojis
for x,y, png in zip(fig.data[0].x, fig.data[0].y, Path.cwd().joinpath("nfl-logos").glob("*.png")):
    fig.add_layout_image(
        x=x,
        y=y,
        source=Image.open(png),
        xref="x",
        yref="y",
        sizex=2,
        sizey=2,
        xanchor="center",
        yanchor="middle",
    )
    
fig

answered Nov 21, 2021 at 17:29

Rob Raymond

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2 Comments

Mr.J Over a year ago

Hey! What if I want to add the value of y coordinate as the title on each of these images? And is there a way not to overlap the images if the points are plotting near each other?

Rob Raymond Over a year ago

@Mr.J fig.add_annotation(x=x, y=y, text=png.stem) will label each image. Overlapping it's down to adding them in order you want them so most important images are at front and less important ones at back

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