Create a barplot in R using dygraphs package

Question

Is there a way to use different kinds of plots with dygraphs in R like on the dygraphs website itself http://dygraphs.com/tests/plotters.html? Is there a way to access these when using R? A simple example taken from the dygraphs for R website would look like:

library(dygraphs)
library(dplyr)
lungDeaths <- cbind(mdeaths, fdeaths)
dygraph(lungDeaths)
# How to choose a different type of plot?

/edit. So I found out that you can use custom plotters with dygraphs like on here: http://blog.dygraphs.com/2012/08/introducing-custom-plotters.html. Is there any way to get that in R?

I know ggplot2 but I want to use it in an interactive way in a html file. Also the synchronization feature is very attractive to me! I want to have a Range selector provided by dygraphs like this one: http://rstudio.github.io/dygraphs/gallery-range-selector.html — pfuhlert, Apr 17 '15 at 12:29

score 8 · Accepted Answer · answered May 19 '15 at 20:29

I used plotter in dyOptions to create a bar chart. I just copied the barChartPlotter function from the dygraphs blog. http://blog.dygraphs.com/2012/08/introducing-custom-plotters.html

library(xts)
library(dygraphs)
library(lubridate)

graph_data <- xts(x = c(1,2,3,4), order.by = lubridate::ymd(c("2015-01-01", "2015-02-01", "2015-03-01", "2015-04-01")))
names(graph_data) <- "value"

dygraph(graph_data) %>%
  dyOptions(useDataTimezone = TRUE, plotter = 
              "function barChartPlotter(e) {
                var ctx = e.drawingContext;
                var points = e.points;
                var y_bottom = e.dygraph.toDomYCoord(0);  // see     http://dygraphs.com/jsdoc/symbols/Dygraph.html#toDomYCoord

                // This should really be based on the minimum gap
                var bar_width = 2/3 * (points[1].canvasx - points[0].canvasx);
                ctx.fillStyle = e.color;

                // Do the actual plotting.
                for (var i = 0; i < points.length; i++) {
                  var p = points[i];
                  var center_x = p.canvasx;  // center of the bar

                  ctx.fillRect(center_x - bar_width / 2, p.canvasy,
                               bar_width, y_bottom - p.canvasy);
                  ctx.strokeRect(center_x - bar_width / 2, p.canvasy,
                                 bar_width, y_bottom - p.canvasy);
                }
              }")

Wow very nice! Thank you. I got stock with NVD3, but this is the perfect answer to my question. — pfuhlert, May 20 '15 at 08:34
I had the same issue last Monday and thought that someone else might find it useful. NVD3 is very nice to! — KERO, May 20 '15 at 20:10
It returns empty dygraph. I can point bars with my mouse pointer, but they are transparent... — Alexandros, Oct 29 '20 at 15:30

score 2 · Answer 2 · answered Apr 17 '15 at 15:02

2

Try the rCharts and NVD3. It is not possible to zoom in the graphs, but IMO it is more fancy and some of selection features are cool.

answered Apr 17 '15 at 15:02

Bechyňák Petr

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OK I ended up using NVD3 so thank you for your answer. I will choose it as the solution. – pfuhlert Apr 28 '15 at 09:09

Create a barplot in R using dygraphs package

2 Answers2

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