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Getting Started with Plotly in ggplot2

Get started with Plotly's R graphing library with ggplot2 to make interactive, publication-quality graphs online.


New to Plotly?

Plotly is a free and open-source graphing library for R. We recommend you read our Getting Started guide for the latest installation or upgrade instructions, then move on to our Plotly Fundamentals tutorials or dive straight in to some Basic Charts tutorials.

Plotly for R

Plotly is an R package for creating interactive web-based graphs via plotly's JavaScript graphing library, plotly.js.

The plotly R package serializes ggplot2 figures into Plotly's universal graph JSON. plotly::ggplotly will crawl the ggplot2 figure, extract and translate all of the attributes of the ggplot2 figure into JSON (the colors, the axes, the chart type, etc), and draw the graph with plotly.js.

Furthermore, you have the option of manipulating the Plotly object with the style function.

Build Status

Installation

Plotly is now on CRAN!

install.packages("plotly")

Or install the latest development version (on GitHub) via devtools:

devtools::install_github("ropensci/plotly")

RStudio users should download the latest RStudio release for compatibility with htmlwidgets.

Initialization

By default, Plotly for R runs locally in your web browser or in the R Studio viewer.

library(plotly)

set.seed(100)
d <- diamonds[sample(nrow(diamonds), 1000), ]

p <- ggplot(data = d, aes(x = carat, y = price)) +
  geom_point(aes(text = paste("Clarity:", clarity)), size = 4) +
  geom_smooth(aes(colour = cut, fill = cut)) + facet_wrap(~ cut)

fig <- ggplotly(p)

fig

Simply printing the Plotly object will render the chart locally in your web browser or in the R Studio viewer.

Plotly graphs are interactive. Click on legend entries to toggle traces, click-and-drag on the chart to zoom, double-click to autoscale, shift-and-drag to pan.

Cutomizing the Layout

Since the ggplotly() function returns a plotly object, we can manipulate that object in the same way that we would manipulate any other plotly object. A simple and useful application of this is to specify interaction modes, like plotly.js' layout.dragmode for specifying the mode of click+drag events.

library(plotly)
## Loading required package: ggplot2
## 
## Attaching package: 'plotly'
## The following object is masked from 'package:ggplot2':
## 
##     last_plot
## The following object is masked from 'package:stats':
## 
##     filter
## The following object is masked from 'package:graphics':
## 
##     layout
p <- ggplot(fortify(forecast::gold), aes(x, y)) + geom_line()
## Registered S3 method overwritten by 'quantmod':
##   method            from
##   as.zoo.data.frame zoo
fig <- ggplotly(p)

fig <- fig %>% layout(dragmode = "pan")

fig

Modifying Layers

As mentioned previously, ggplotly() translates each ggplot2 layer into one or more plotly.js traces. In this translation, it is forced to make a number of assumptions about trace attribute values that may or may not be appropriate for the use case. The style() function is useful in this scenario, as it provides a way to modify trace attribute values in a plotly object. Furthermore, you can use the plotly_build() function.

Interactively View the JSON Object

Before using the style() or plotly_build functions, you may want to inspect the actual traces in a given plotly object using the plotly_json() function

library(plotly)

p <- ggplot(fortify(forecast::gold), aes(x, y)) + geom_line()

plotly_json(p)
## {
##   "data": [
##     {
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394.30", "x:  501<br />y: 385.25", "x:  502<br />y: 391.20", "x:  503<br />y: 388.60", "x:  504<br />y: 390.50", "x:  505<br />y: 389.20", "x:  506<br />y: 387.25", "x:  507<br />y: 388.75", "x:  508<br />y: 389.70", "x:  509<br />y: 394.60", "x:  510<br />y: 393.70", "x:  511<br />y: 393.40", "x:  512<br />y: 392.50", "x:  513<br />y: 394.15", "x:  514<br />y: 395.35", "x:  515<br />y: 392.75", "x:  516<br />y: 391.00", "x:  517<br />y:     NA", "x:  518<br />y:     NA", "x:  519<br />y: 391.40", "x:  520<br />y: 389.40", "x:  521<br />y: 390.90", "x:  522<br />y:     NA", "x:  523<br />y: 402.40", "x:  524<br />y: 399.00", "x:  525<br />y: 401.70", "x:  526<br />y: 399.50", "x:  527<br />y: 401.60", "x:  528<br />y: 402.25", "x:  529<br />y: 409.90", "x:  530<br />y: 408.60", "x:  531<br />y: 414.40", "x:  532<br />y: 415.00", "x:  533<br />y: 414.50", "x:  534<br />y: 421.25", "x:  535<br />y: 417.40", "x:  536<br />y: 408.50", "x:  537<br />y: 410.60", "x:  538<br />y: 403.55", "x:  539<br />y: 403.35", "x:  540<br />y: 408.70", "x:  541<br />y: 416.50", "x:  542<br />y: 411.00", "x:  543<br />y: 407.30", "x:  544<br />y: 406.45", "x:  545<br />y: 402.00", "x:  546<br />y: 401.75", "x:  547<br />y: 402.60", "x:  548<br />y: 402.70", "x:  549<br />y: 402.95", "x:  550<br />y: 404.40", "x:  551<br />y: 402.90", "x:  552<br />y: 402.00", "x:  553<br />y: 395.55", "x:  554<br />y: 397.20", "x:  555<br />y: 396.85", "x:  556<br />y: 392.25", "x:  557<br />y: 392.60", "x:  558<br />y: 397.50", "x:  559<br />y: 403.00", "x:  560<br />y: 401.95", "x:  561<br />y: 406.70", "x:  562<br />y: 403.10", "x:  563<br />y: 408.70", "x:  564<br />y: 404.40", "x:  565<br />y: 403.70", "x:  566<br />y: 407.65", "x:  567<br />y: 411.45", "x:  568<br />y: 406.50", "x:  569<br />y: 404.85", "x:  570<br />y: 405.00", "x:  571<br />y: 406.85", "x:  572<br />y: 408.00", "x:  573<br />y: 409.25", "x:  574<br />y: 404.65", "x:  575<br />y: 406.00", "x:  576<br />y: 406.40", "x:  577<br />y: 405.05", "x:  578<br />y: 405.00", "x:  579<br />y: 406.60", "x:  580<br />y: 410.30", "x:  581<br />y: 415.00", "x:  582<br />y: 411.30", "x:  583<br />y: 415.90", "x:  584<br />y: 421.80", "x:  585<br />y: 419.00", "x:  586<br />y: 418.50", "x:  587<br />y: 420.25", "x:  588<br />y: 418.65", "x:  589<br />y: 420.55", "x:  590<br />y: 419.80", "x:  591<br />y: 423.20", "x:  592<br />y: 421.50", "x:  593<br />y: 423.30", "x:  594<br />y: 436.50", "x:  595<br />y: 440.25", "x:  596<br />y: 445.50", "x:  597<br />y: 441.00", "x:  598<br />y:     NA", "x:  599<br />y:     NA", "x:  600<br />y: 454.30", "x:  601<br />y: 446.80", "x:  602<br />y: 453.00", "x:  603<br />y: 462.60", "x:  604<br />y: 476.60", "x:  605<br />y: 455.75", "x:  606<br />y: 451.75", "x:  607<br />y: 454.50", "x:  608<br />y: 452.15", "x:  609<br />y:     NA", "x:  610<br />y: 464.50", "x:  611<br />y: 456.75", "x:  612<br />y: 457.40", "x:  613<br />y: 456.70", "x:  614<br />y: 454.75", "x:  615<br />y: 460.25", "x: 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443.10", "x:  655<br />y: 444.80", "x:  656<br />y: 442.15", "x:  657<br />y: 445.30", "x:  658<br />y: 444.25", "x:  659<br />y: 443.70", "x:  660<br />y: 447.15", "x:  661<br />y: 448.25", "x:  662<br />y: 452.90", "x:  663<br />y: 452.50", "x:  664<br />y: 449.65", "x:  665<br />y: 452.50", "x:  666<br />y: 454.45", "x:  667<br />y: 454.75", "x:  668<br />y: 454.00", "x:  669<br />y: 453.10", "x:  670<br />y: 454.20", "x:  671<br />y: 459.50", "x:  672<br />y: 457.20", "x:  673<br />y: 464.20", "x:  674<br />y: 473.25", "x:  675<br />y: 476.00", "x:  676<br />y: 469.85", "x:  677<br />y: 468.85", "x:  678<br />y: 464.00", "x:  679<br />y: 459.50", "x:  680<br />y: 463.20", "x:  681<br />y: 461.00", "x:  682<br />y: 462.00", "x:  683<br />y: 457.40", "x:  684<br />y: 454.80", "x:  685<br />y: 454.90", "x:  686<br />y: 457.65", "x:  687<br />y: 457.40", "x:  688<br />y: 454.10", "x:  689<br />y: 455.80", "x:  690<br />y: 458.50", "x:  691<br />y: 457.40", "x:  692<br />y: 458.25", "x:  693<br />y: 455.90", "x:  694<br />y:     NA", "x:  695<br />y: 453.10", "x:  696<br />y: 456.55", "x:  697<br />y: 462.15", "x:  698<br />y: 464.40", "x:  699<br />y: 463.35", "x:  700<br />y: 462.75", "x:  701<br />y: 458.00", "x:  702<br />y: 461.00", "x:  703<br />y: 460.90", "x:  704<br />y: 456.60", "x:  705<br />y: 458.35", "x:  706<br />y: 458.50", "x:  707<br />y: 458.80", "x:  708<br />y: 461.35", "x:  709<br />y: 458.85", "x:  710<br />y: 463.15", "x:  711<br />y: 461.05", "x:  712<br />y: 463.85", "x:  713<br />y: 461.00", "x:  714<br />y: 460.90", "x:  715<br />y: 458.90", "x:  716<br />y: 459.15", "x:  717<br />y: 454.10", "x:  718<br />y: 455.00", "x:  719<br />y: 455.15", "x:  720<br />y: 456.85", "x:  721<br />y: 458.55", "x:  722<br />y: 458.25", "x:  723<br />y: 461.75", "x:  724<br />y: 461.85", "x:  725<br />y: 459.65", "x:  726<br />y: 459.45", "x:  727<br />y: 461.75", "x:  728<br />y: 464.25", "x:  729<br />y: 479.50", "x:  730<br />y: 481.60", "x:  731<br />y: 466.65", "x:  732<br />y: 469.80", "x:  733<br />y: 472.65", "x:  734<br />y: 474.85", "x:  735<br />y: 473.45", "x:  736<br />y: 479.65", "x:  737<br />y: 474.05", "x:  738<br />y: 468.00", "x:  739<br />y: 469.95", "x:  740<br />y: 470.10", "x:  741<br />y: 467.00", "x:  742<br />y: 459.70", "x:  743<br />y: 458.60", "x:  744<br />y: 463.50", "x:  745<br />y: 458.75", "x:  746<br />y: 461.30", "x:  747<br />y: 463.00", "x:  748<br />y: 464.20", "x:  749<br />y: 461.75", "x:  750<br />y: 463.55", "x:  751<br />y: 464.20", "x:  752<br />y: 465.80", "x:  753<br />y: 466.25", "x:  754<br />y: 468.25", "x:  755<br />y: 476.95", "x:  756<br />y: 478.75", "x:  757<br />y: 477.65", "x:  758<br />y: 477.80", "x:  759<br />y: 493.90", "x:  760<br />y: 486.90", "x:  761<br />y: 490.00", "x:  762<br />y: 488.95", "x:  763<br />y: 485.75", "x:  764<br />y: 480.90", "x:  765<br />y: 483.00", "x:  766<br />y: 485.30", "x:  767<br />y: 484.50", "x:  768<br />y: 495.00", "x:  769<br />y: 502.75", "x:  770<br />y: 593.70", "x:  771<br />y: 487.05", "x:  772<br />y: 487.75", "x:  773<br />y: 484.55", "x:  774<br />y: 481.00", "x:  775<br />y: 481.60", "x:  776<br />y: 483.25", "x:  777<br />y: 483.75", "x:  778<br />y:     NA", "x:  779<br />y:     NA", "x:  780<br />y: 489.55", "x:  781<br />y: 486.90", "x:  782<br />y: 486.50", "x:  783<br />y:     NA", "x:  784<br />y: 484.10", "x:  785<br />y: 477.30", "x:  786<br />y: 481.60", "x:  787<br />y: 483.95", "x:  788<br />y: 479.50", "x:  789<br />y: 485.30", "x:  790<br />y: 482.05", "x:  791<br />y: 481.40", "x:  792<br />y: 480.90", "x:  793<br />y: 484.80", "x:  794<br />y: 475.85", "x:  795<br />y: 476.75", "x:  796<br />y: 477.75", "x:  797<br />y: 476.50", "x:  798<br />y: 477.85", "x:  799<br />y: 471.40", "x:  800<br />y: 471.40", "x:  801<br />y: 469.40", "x:  802<br />y: 468.00", "x:  803<br />y: 465.25", "x:  804<br />y: 454.65", "x:  805<br />y: 455.15", "x:  806<br />y: 447.10", "x:  807<br />y: 437.60", "x:  808<br />y: 444.15", "x:  809<br />y: 443.05", "x:  810<br />y: 439.25", "x:  811<br />y: 443.80", "x:  812<br />y: 440.20", "x:  813<br />y: 440.30", "x:  814<br />y: 443.60", "x:  815<br />y: 444.25", "x:  816<br />y: 444.40", "x:  817<br />y: 446.25", "x:  818<br />y: 443.45", "x:  819<br />y: 445.10", "x:  820<br />y: 443.95", "x:  821<br />y: 438.00", "x:  822<br />y: 433.95", "x:  823<br />y: 432.65", "x:  824<br />y: 423.75", "x:  825<br />y: 429.15", "x:  826<br />y: 431.55", "x:  827<br />y: 429.15", "x:  828<br />y: 430.75", "x:  829<br />y: 436.00", "x:  830<br />y: 435.70", "x:  831<br />y: 436.10", "x:  832<br />y: 437.25", "x:  833<br />y: 444.10", "x:  834<br />y: 441.90", "x:  835<br />y: 442.25", "x:  836<br />y: 447.15", "x:  837<br />y: 445.35", "x:  838<br />y: 442.80", "x:  839<br />y: 446.50", "x:  840<br />y: 449.40", "x:  841<br />y: 450.00", "x:  842<br />y: 453.90", "x:  843<br />y: 451.50", "x:  844<br />y: 453.10", "x:  845<br />y: 454.70", "x:  846<br />y: 454.00", "x:  847<br />y: 458.00", "x:  848<br />y:     NA", "x:  849<br />y:     NA", "x:  850<br />y: 456.00", "x:  851<br />y: 450.80", "x:  852<br />y: 446.25", "x:  853<br />y: 448.60", "x:  854<br />y: 450.15", "x:  855<br />y: 450.20", "x:  856<br />y: 448.50", "x:  857<br />y: 447.00", "x:  858<br />y: 453.85", "x:  859<br />y: 457.55", "x:  860<br />y: 456.55", "x:  861<br />y: 458.00", "x:  862<br />y: 454.00", "x:  863<br />y: 453.15", "x:  864<br />y: 449.75", "x:  865<br />y: 448.25", "x:  866<br />y: 449.10", "x:  867<br />y: 452.15", "x:  868<br />y: 449.75", "x:  869<br />y:     NA", "x:  870<br />y: 444.30", "x:  871<br />y: 441.95", "x:  872<br />y: 445.35", "x:  873<br />y: 445.95", "x:  874<br />y: 443.60", "x:  875<br />y: 447.10", "x:  876<br />y: 449.35", "x:  877<br />y: 448.65", "x:  878<br />y: 451.05", "x:  879<br />y: 453.40", "x:  880<br />y: 453.15", "x:  881<br />y: 452.70", "x:  882<br />y: 456.65", "x:  883<br />y: 459.50", "x:  884<br />y: 460.25", "x:  885<br />y: 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##       "mode": "lines",
##       "line": {
##         "width": 1.88976377952756,
##         "color": "rgba(0,0,0,1)",
##         "dash": "solid"
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##       "hoveron": "points",
##       "showlegend": false,
##       "xaxis": "x",
##       "yaxis": "y",
##       "hoverinfo": "text",
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##   "layout": {
##     "margin": {
##       "t": 26.2283105022831,
##       "r": 7.30593607305936,
##       "b": 40.1826484018265,
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##     "plot_bgcolor": "rgba(235,235,235,1)",
##     "paper_bgcolor": "rgba(255,255,255,1)",
##     "font": {
##       "color": "rgba(0,0,0,1)",
##       "family": "",
##       "size": 14.6118721461187
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##       "automargin": true,
##       "type": "linear",
##       "autorange": false,
##       "range": [-54.35, 1163.35],
##       "tickmode": "array",
##       "ticktext": ["0", "300", "600", "900"],
##       "tickvals": [7.105427357601e-15, 300, 600, 900],
##       "categoryorder": "array",
##       "categoryarray": ["0", "300", "600", "900"],
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##       "ticks": "outside",
##       "tickcolor": "rgba(51,51,51,1)",
##       "ticklen": 3.65296803652968,
##       "tickwidth": 0.66417600664176,
##       "showticklabels": true,
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##         "size": 11.689497716895
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##       "tickangle": -0,
##       "showline": false,
##       "linecolor": null,
##       "linewidth": 0,
##       "showgrid": true,
##       "gridcolor": "rgba(255,255,255,1)",
##       "gridwidth": 0.66417600664176,
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##       "anchor": "y",
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##       "hoverformat": ".2f"
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##       "range": [269.565, 609.135],
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##       "ticktext": ["300", "400", "500", "600"],
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##       "categoryorder": "array",
##       "categoryarray": ["300", "400", "500", "600"],
##       "nticks": null,
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##       "hoverformat": ".2f"
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##         "xref": "paper",
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##     "showlegend": false,
##     "legend": {
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##       "bordercolor": "transparent",
##       "borderwidth": 1.88976377952756,
##       "font": {
##         "color": "rgba(0,0,0,1)",
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##         "size": 11.689497716895
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##     "hovermode": "closest",
##     "barmode": "relative"
##   },
##   "config": {
##     "doubleClick": "reset",
##     "showSendToCloud": false
##   },
##   "source": "A",
##   "attrs": {
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##       "y": {},
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##   "cur_data": "4c984260b22a",
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##     "selected": {
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##   "shinyEvents": ["plotly_hover", "plotly_click", "plotly_selected", "plotly_relayout", "plotly_brushed", "plotly_brushing", "plotly_clickannotation", "plotly_doubleclick", "plotly_deselect", "plotly_afterplot", "plotly_sunburstclick"],
##   "base_url": "https://plot.ly"
## }

Modify with Style

Generally speaking, the style() function is designed modify attribute values of trace(s) within a plotly object, which is primarily useful for customizing defaults produced via ggplotly()

library(plotly)

p <- ggplot(fortify(forecast::gold), aes(x, y)) + geom_line()

fig <- ggplotly(p)

fig <- fig %>% style(line = list(color = 'gold'), hoverinfo = "y", traces = 1)

fig

Modify with Build

library(plotly)

df <- data.frame(x=c(1, 2, 3, 4), y=c(1, 5, 3, 5), group=c('A', 'A', 'B', 'B'))

p <- ggplot(data=df, aes(x=x, y=y, colour=group)) + geom_point()

fig <- ggplotly(p)

fig

Here is the ggplot2 figure described as a plotly object

fig <- plotly_build(fig)
str(fig)
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##   ..$ data       :List of 2
##   .. ..$ :List of 14
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##   .. .. .. ..- attr(*, "apiSrc")= logi TRUE
##   .. .. ..$ y          : num [1:2] 1 5
##   .. .. .. ..- attr(*, "apiSrc")= logi TRUE
##   .. .. ..$ text       : chr [1:2] "x: 1<br />y: 1" "x: 2<br />y: 5"
##   .. .. .. ..- attr(*, "apiSrc")= logi TRUE
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##   .. .. .. .. ..$ color: chr "rgba(248,118,109,1)"
##   .. .. ..$ hoveron    : chr "points"
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##   .. .. ..$ legendgroup: chr "A"
##   .. .. ..$ showlegend : logi TRUE
##   .. .. ..$ xaxis      : chr "x"
##   .. .. ..$ yaxis      : chr "y"
##   .. .. ..$ hoverinfo  : chr "text"
##   .. .. ..$ frame      : chr NA
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##   .. .. .. ..- attr(*, "apiSrc")= logi TRUE
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##   .. .. .. ..- attr(*, "apiSrc")= logi TRUE
##   .. .. ..$ text       : chr [1:2] "x: 3<br />y: 3" "x: 4<br />y: 5"
##   .. .. .. ..- attr(*, "apiSrc")= logi TRUE
##   .. .. ..$ type       : chr "scatter"
##   .. .. ..$ mode       : chr "markers"
##   .. .. ..$ marker     :List of 6
##   .. .. .. ..$ autocolorscale: logi FALSE
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##   .. .. .. ..$ line          :List of 2
##   .. .. .. .. ..$ width: num 1.89
##   .. .. .. .. ..$ color: chr "rgba(0,191,196,1)"
##   .. .. ..$ hoveron    : chr "points"
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##   .. .. ..$ legendgroup: chr "B"
##   .. .. ..$ showlegend : logi TRUE
##   .. .. ..$ xaxis      : chr "x"
##   .. .. ..$ yaxis      : chr "y"
##   .. .. ..$ hoverinfo  : chr "text"
##   .. .. ..$ frame      : chr NA
##   ..$ layout     :List of 12
##   .. ..$ margin       :List of 4
##   .. .. ..$ t: num 26.2
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##   .. ..$ plot_bgcolor : chr "rgba(235,235,235,1)"
##   .. ..$ paper_bgcolor: chr "rgba(255,255,255,1)"
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##   .. .. ..$ domain        : num [1:2] 0 1
##   .. .. ..$ automargin    : logi TRUE
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##   .. .. ..$ autorange     : logi FALSE
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##   .. .. ..$ categoryorder : chr "array"
##   .. .. ..$ categoryarray : chr [1:4] "1" "2" "3" "4"
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##   .. .. ..$ tickwidth     : num 0.664
##   .. .. ..$ showticklabels: logi TRUE
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##   .. .. ..$ tickangle     : num 0
##   .. .. ..$ showline      : logi FALSE
##   .. .. ..$ linecolor     : logi NA
##   .. .. ..$ linewidth     : num 0
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##   .. .. ..$ gridcolor     : chr "rgba(255,255,255,1)"
##   .. .. ..$ gridwidth     : num 0.664
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##   .. .. .. .. ..$ family: chr ""
##   .. .. .. .. ..$ size  : num 14.6
##   .. .. ..$ hoverformat   : chr ".2f"
##   .. ..$ yaxis        :List of 28
##   .. .. ..$ domain        : num [1:2] 0 1
##   .. .. ..$ automargin    : logi TRUE
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##   .. .. ..$ tickmode      : chr "array"
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##   .. .. ..$ tickvals      : num [1:5] 1 2 3 4 5
##   .. .. ..$ categoryorder : chr "array"
##   .. .. ..$ categoryarray : chr [1:5] "1" "2" "3" "4" ...
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##   .. .. ..$ borderwidth: num 1.89
##   .. .. ..$ font       :List of 3
##   .. .. .. ..$ color : chr "rgba(0,0,0,1)"
##   .. .. .. ..$ family: chr ""
##   .. .. .. ..$ size  : num 11.7
##   .. .. ..$ y          : num 0.935
##   .. ..$ annotations  :List of 1
##   .. .. ..$ :List of 13
##   .. .. .. ..$ text       : chr "group"
##   .. .. .. ..$ x          : num 1.02
##   .. .. .. ..$ y          : num 1
##   .. .. .. ..$ showarrow  : logi FALSE
##   .. .. .. ..$ ax         : num 0
##   .. .. .. ..$ ay         : num 0
##   .. .. .. ..$ font       :List of 3
##   .. .. .. .. ..$ color : chr "rgba(0,0,0,1)"
##   .. .. .. .. ..$ family: chr ""
##   .. .. .. .. ..$ size  : num 14.6
##   .. .. .. ..$ xref       : chr "paper"
##   .. .. .. ..$ yref       : chr "paper"
##   .. .. .. ..$ textangle  : num 0
##   .. .. .. ..$ xanchor    : chr "left"
##   .. .. .. ..$ yanchor    : chr "bottom"
##   .. .. .. ..$ legendTitle: logi TRUE
##   .. ..$ hovermode    : chr "closest"
##   .. ..$ barmode      : chr "relative"
##   ..$ config     :List of 2
##   .. ..$ doubleClick    : chr "reset"
##   .. ..$ showSendToCloud: logi FALSE
##   ..$ source     : chr "A"
##   ..$ attrs      :List of 1
##   .. ..$ 4c987ad11402:List of 4
##   .. .. ..$ x     :Class 'formula'  language ~~x
##   .. .. .. .. ..- attr(*, ".Environment")=<environment: 0x55f24541b0d0> 
##   .. .. ..$ y     :Class 'formula'  language ~~y
##   .. .. .. .. ..- attr(*, ".Environment")=<environment: 0x55f24541b0d0> 
##   .. .. ..$ colour:Class 'formula'  language ~~group
##   .. .. .. .. ..- attr(*, ".Environment")=<environment: 0x55f24541b0d0> 
##   .. .. ..$ type  : chr "scatter"
##   .. .. ..- attr(*, "class")= chr "plotly_eval"
##   ..$ cur_data   : chr "4c987ad11402"
##   ..$ visdat     :List of 1
##   .. ..$ 4c987ad11402:function (y)  
##   ..$ highlight  :List of 7
##   .. ..$ on        : chr "plotly_click"
##   .. ..$ persistent: logi FALSE
##   .. ..$ dynamic   : logi FALSE
##   .. ..$ selectize : logi FALSE
##   .. ..$ opacityDim: num 0.2
##   .. ..$ selected  :List of 1
##   .. .. ..$ opacity: num 1
##   .. ..$ debounce  : num 0
##   ..$ shinyEvents: chr [1:11] "plotly_hover" "plotly_click" "plotly_selected" "plotly_relayout" ...
##   ..$ base_url   : chr "https://plot.ly"
##   ..- attr(*, "TOJSON_FUNC")=function (x, ...)  
##  $ width        : NULL
##  $ height       : NULL
##  $ sizingPolicy :List of 6
##   ..$ defaultWidth : chr "100%"
##   ..$ defaultHeight: num 400
##   ..$ padding      : NULL
##   ..$ viewer       :List of 6
##   .. ..$ defaultWidth : NULL
##   .. ..$ defaultHeight: NULL
##   .. ..$ padding      : NULL
##   .. ..$ fill         : logi TRUE
##   .. ..$ suppress     : logi FALSE
##   .. ..$ paneHeight   : NULL
##   ..$ browser      :List of 5
##   .. ..$ defaultWidth : NULL
##   .. ..$ defaultHeight: NULL
##   .. ..$ padding      : NULL
##   .. ..$ fill         : logi TRUE
##   .. ..$ external     : logi FALSE
##   ..$ knitr        :List of 3
##   .. ..$ defaultWidth : NULL
##   .. ..$ defaultHeight: NULL
##   .. ..$ figure       : logi TRUE
##  $ dependencies :List of 5
##   ..$ :List of 10
##   .. ..$ name      : chr "typedarray"
##   .. ..$ version   : chr "0.1"
##   .. ..$ src       :List of 1
##   .. .. ..$ file: chr "htmlwidgets/lib/typedarray"
##   .. ..$ meta      : NULL
##   .. ..$ script    : chr "typedarray.min.js"
##   .. ..$ stylesheet: NULL
##   .. ..$ head      : NULL
##   .. ..$ attachment: NULL
##   .. ..$ package   : chr "plotly"
##   .. ..$ all_files : logi FALSE
##   .. ..- attr(*, "class")= chr "html_dependency"
##   ..$ :List of 10
##   .. ..$ name      : chr "jquery"
##   .. ..$ version   : chr "1.11.3"
##   .. ..$ src       :List of 1
##   .. .. ..$ file: chr "lib/jquery"
##   .. ..$ meta      : NULL
##   .. ..$ script    : chr "jquery.min.js"
##   .. ..$ stylesheet: NULL
##   .. ..$ head      : NULL
##   .. ..$ attachment: NULL
##   .. ..$ package   : chr "crosstalk"
##   .. ..$ all_files : logi TRUE
##   .. ..- attr(*, "class")= chr "html_dependency"
##   ..$ :List of 10
##   .. ..$ name      : chr "crosstalk"
##   .. ..$ version   : chr "1.1.0.1"
##   .. ..$ src       :List of 1
##   .. .. ..$ file: chr "www"
##   .. ..$ meta      : NULL
##   .. ..$ script    : chr "js/crosstalk.min.js"
##   .. ..$ stylesheet: chr "css/crosstalk.css"
##   .. ..$ head      : NULL
##   .. ..$ attachment: NULL
##   .. ..$ package   : chr "crosstalk"
##   .. ..$ all_files : logi TRUE
##   .. ..- attr(*, "class")= chr "html_dependency"
##   ..$ :List of 10
##   .. ..$ name      : chr "plotly-htmlwidgets-css"
##   .. ..$ version   : chr "1.52.2"
##   .. ..$ src       :List of 1
##   .. .. ..$ file: chr "htmlwidgets/lib/plotlyjs"
##   .. ..$ meta      : NULL
##   .. ..$ script    : NULL
##   .. ..$ stylesheet: chr "plotly-htmlwidgets.css"
##   .. ..$ head      : NULL
##   .. ..$ attachment: NULL
##   .. ..$ package   : chr "plotly"
##   .. ..$ all_files : logi FALSE
##   .. ..- attr(*, "class")= chr "html_dependency"
##   ..$ :List of 10
##   .. ..$ name      : chr "plotly-main"
##   .. ..$ version   : chr "1.52.2"
##   .. ..$ src       :List of 1
##   .. .. ..$ file: chr "htmlwidgets/lib/plotlyjs"
##   .. ..$ meta      : NULL
##   .. ..$ script    : chr "plotly-latest.min.js"
##   .. ..$ stylesheet: NULL
##   .. ..$ head      : NULL
##   .. ..$ attachment: NULL
##   .. ..$ package   : chr "plotly"
##   .. ..$ all_files : logi FALSE
##   .. ..- attr(*, "class")= chr "html_dependency"
##  $ elementId    : NULL
##  $ preRenderHook:function (p, registerFrames = TRUE)  
##  $ jsHooks      : list()
##  - attr(*, "class")= chr [1:2] "plotly" "htmlwidget"
##  - attr(*, "package")= chr "plotly"

This declarative description of the graph is very human readable. Every attribute of the chart, the colors, the data, the text, is described in a key-value pair in this object. View all of the possible graph attributes.

Attributes of plotly figures are grouped into two categories: data and layout. data describes attributes that pertain to the plot's series, or "traces". These properties include things like the x and y data, the color and name of the trace, which axis the trace is bound to. data is an unnamed list.

Take a look:

library(plotly)
names(fig$x$data[[1]])
##  [1] "x"           "y"           "text"        "type"        "mode"       
##  [6] "marker"      "hoveron"     "name"        "legendgroup" "showlegend" 
## [11] "xaxis"       "yaxis"       "hoverinfo"   "frame"
# this trace is a "scatter" type
fig$x$data[[1]]$type
## [1] "scatter"

its name, as it appears in the legend, is "A"

fig$x$data[[1]]$name
## [1] "A"
str(fig$x$data[[1]])
## List of 14
##  $ x          : num [1:2] 1 2
##   ..- attr(*, "apiSrc")= logi TRUE
##  $ y          : num [1:2] 1 5
##   ..- attr(*, "apiSrc")= logi TRUE
##  $ text       : chr [1:2] "x: 1<br />y: 1" "x: 2<br />y: 5"
##   ..- attr(*, "apiSrc")= logi TRUE
##  $ type       : chr "scatter"
##  $ mode       : chr "markers"
##  $ marker     :List of 6
##   ..$ autocolorscale: logi FALSE
##   ..$ color         : chr "rgba(248,118,109,1)"
##   ..$ opacity       : num 1
##   ..$ size          : num 5.67
##   ..$ symbol        : chr "circle"
##   ..$ line          :List of 2
##   .. ..$ width: num 1.89
##   .. ..$ color: chr "rgba(248,118,109,1)"
##  $ hoveron    : chr "points"
##  $ name       : chr "A"
##  $ legendgroup: chr "A"
##  $ showlegend : logi TRUE
##  $ xaxis      : chr "x"
##  $ yaxis      : chr "y"
##  $ hoverinfo  : chr "text"
##  $ frame      : chr NA

layout describes attributes that pertain to the rest of the plot, like axis properties, annotations, legends, and titles.

names(fig$x$layout)
##  [1] "margin"        "plot_bgcolor"  "paper_bgcolor" "font"         
##  [5] "xaxis"         "yaxis"         "shapes"        "showlegend"   
##  [9] "legend"        "annotations"   "hovermode"     "barmode"
str(fig$x$layout)
str(fig$x$layout$plot_bgcolor) # the background color of the plot is "rgb(229,229,229)"
str(fig$x$layout$legend)

Each of these properties was extracted and translated from the original ggplot2 figure. View all of the possible attributes.

You can edit or add these attributes and then send the figure to Plotly. Let's add custom hover text (text), change the legend names (name) add a title (layout$title)

fig$x$data[[1]]$name <- 'Group A'
fig$x$data[[1]]$text <- c('St Urbain', 'Gaspe')
fig$x$data[[1]]$type <- 'scatter'
fig$x$data[[1]]$mode <- 'lines'

fig$x$data[[2]]$name <- 'Group B'
fig$x$data[[2]]$text <- c('Laurier', 'Fairmount')
fig$x$data[[2]]$type <- 'scatter'
fig$x$data[[2]]$mode <- 'lines'

fig$x$layout$title <- 'Updated title'

Now, display this figure:

fig
## A marker object has been specified, but markers is not in the mode
## Adding markers to the mode...
## A marker object has been specified, but markers is not in the mode
## Adding markers to the mode...

Resources

What About Dash?

Dash for R is an open-source framework for building analytical applications, with no Javascript required, and it is tightly integrated with the Plotly graphing library.

Learn about how to install Dash for R at https://dashr.plot.ly/installation.

Everywhere in this page that you see fig, you can display the same figure in a Dash for R application by passing it to the figure argument of the Graph component from the built-in dashCoreComponents package like this:

library(plotly)

fig <- plot_ly() 
# fig <- fig %>% add_trace( ... )
# fig <- fig %>% layout( ... ) 

library(dash)
library(dashCoreComponents)
library(dashHtmlComponents)

app <- Dash$new()
app$layout(
    htmlDiv(
        list(
            dccGraph(figure=fig) 
        )
     )
)

app$run_server(debug=TRUE, dev_tools_hot_reload=FALSE)