Hello everyone,
I am creating a faceted plot using the Plotly backend and and having trouble with stacking subplots of heatmaps. Specifically, the colorbars appear to overlap and I would prefer if they shared a single colorbar. I have included a screenshot of the current behavior.
Here is the code I am currently using (some dummy data included to reproduce the error without taking too long to do the filtering) - Note some minor label and value changes when I created the dummy data versus my project data.
# Example set up
using Dataframes
using Plotly
# Dummy data
_a = DataFrame(Dict{String, Any}(
"alpha" => [1,1,1,1,2,2,1,1,1,1,2,2],
"beta" => [2,2,3,3,3,3,2,2,3,3,3,3],
"aggregation" => ["OR","OR","OR","OR","OR","OR","XOR","XOR","XOR","XOR","XOR","XOR"],
"edit_distance" => [0.029, 0.030, 0.036, 0.036, 0.036, 0.037, 0.033, 0.033, 0.039, 0.037, 0.053, 0.054]
))
# Heatmap, layer pairs vs edit distance, restricted to XOR aggregation
p2 = heatmap(filter(row -> row.aggregation == "XOR", _a),
x=:alpha, y=:beta, z=:edit_distance,
)
# Heatmap, layer pairs vs edit distance, restricted to OR aggregation
p3 = heatmap(filter(row -> row.aggregation == "OR", _a),
x=:alpha, y=:beta, z=:edit_distance,
)
# Faceted plot
p = make_subplots(
rows=2, cols=1, shared_xaxes=true, shared_yaxes=true,
subplot_titles=["XOR aggregation" "OR aggregation"]
)
## Adding panels
add_trace!(p, p2, row=2, col=1)
add_trace!(p, p3, row=1, col=1)
## Formating parent plot
relayout!(p, title_text="Example for Forum")
# Plotting faceted plot
p
I’ve perused the Plotly Julia references (Heatmap traces and Subplots in particular) and so far have not quite been able to find what I want. In the end, I want a single shared colorbar that describes the heatmaps in both panels, like the below screenshot EDIT: New users can only post one embedded media, I am told, so look somewhere on this page for it - the colorbar of the first example there is what I mean. EDIT 2: New users can only put two links in their posts, so just google “Heatmaps Julia Plotly” and you will find it 
Any help would be greatly appreciated!
P.S. This is my first time posting here! I looked through the forums to ensure this wasn’t a duplicate, but to the best of my quick search I didn’t find anything. I have gotten a lot of help from this forum with other issues before and I am excited to finally start participating myself. Time to start looking where I can contribute solutions, too 