add_trace in plotly, which trace to use for my particular graph

Question

I am working on creating basketball shot charts in R using the library plotly, although I am currently stuck. For reference, the type of graph I'm creating will hopefully look a bit like this when they're complete:

From a plotly perspective, I need to use a trace type that will allow me to place hexagons (or some other shape) on the entire graph. I'm confident that I'll be able to appropriately tune the color and size parameters of the hexagons to account for which hexagons should be red vs. orange vs. yellow, and which hexagons should be full size vs. smaller vs. not present at all. I just need to know where to start with the trace / mode.

Underlying the graph is data I have with x and y coordinates for each basketball shot. (assume the graph I've displayed above is 0:50 for both axes, and that i have shot data for shots in each range).

Apologies in advance that this is not a code/programming specific question, but please don't vote to close. Any thoughts on this are appreciated!

Thanks,

EDIT - heatmaps could be an option, but it does not appear that plotly's heatmap trace has a marker parameter that I could set to hexagon.

EDIT2 - ofcourse scatter plot with mode='markers' is an option, but i am concerned that a graph with ~2500 markers will lag (my graph is 47x50, and I'd like each integer pair to have a marker).

leaning towards the simple route of just using a scatter with hexagon markers — Canovice, Nov 03 '17 at 00:03
this isn't my plot - this is the plot i'm trying to recreate in R. there's a blur bc this is a screenshot. — Canovice, Nov 03 '17 at 00:10

score 3 · Accepted Answer · answered Nov 07 '17 at 15:04

You could use a scatter plot and setting the marker symbol to hexagon2. The lines for the field could be created as shapes.

Some proof of concept code:

library('plotly')

p <- plot_ly()
p <- add_trace(p, 
               type = 'scatter', 
               mode = 'markers',
               marker = list(symbol = 'hexagon2',
                             size=c(200, 100, 20)),
               x = c(0.15, 0.2, 0.3),
               y = c(0.2, 0.4, 0.5))
p <- add_trace(p, 
               type = 'scatter', 
               mode = 'markers',
               marker = list(symbol = 'hexagon2',
                             size=c(50, 50, 50, 50, 50)),
               x = c(0.4, 0.5, 0.6, 0.45, 0.55),
               y = c(0.8, 0.8, 0.8, 0.825, 0.825))

p <- layout(p, 
            xaxis = list(range = c(0, 1)),
            yaxis = list(range = c(0, 1)),
            shapes = list(list(type = 'circle',
                               xref='x0',
                               yref='y0',
                               x0 = 0.1,
                               y0 = 1.4,
                               x1 = 0.9,
                               y1 = 0.6))
)
p

Yeah I've been going this route the last few days - it appears there's no hexagonal parameter to pass to the heatmap trace. Thanks! — Canovice, Nov 10 '17 at 16:13

score 3 · Answer 2 · answered Nov 25 '17 at 04:55

3

I've been meaning to post an update on this for quite some time - the graph is still a work in progress, but this is what i have:

answered Nov 25 '17 at 04:55

Canovice

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add_trace in plotly, which trace to use for my particular graph

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