Add plotly_build method for ggmatrix objects

plotly_build() now works with ggmatrix objects (e.g., from
GGally::ggpairs()). Previously, ggplotly() worked but plotly_build()
did not have a method for this class.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: cpsievert

NAMESPACE

@@ -32,6 +32,7 @@ S3method(linewidth_or_size,default)
 S3method(linewidth_or_size,element)
 S3method(plotly_build,"NULL")
 S3method(plotly_build,gg)
+S3method(plotly_build,ggmatrix)
 S3method(plotly_build,list)
 S3method(plotly_build,plotly)
 S3method(print,api)

NEWS.md

@@ -10,6 +10,7 @@
 
 ## Bug fixes
 
+* `plotly_build()` now works with `ggmatrix` objects (e.g., from `GGally::ggpairs()`).
 * Closed #2337: Creating a new `event_data()` handler no longer causes a spurious reactive update of existing `event_data()`s. (#2339)
 * Closed #2376: Removes errant boxmode warning for grouped boxplot. (#2396)
 * Closed #2392: Trivial warning about RColorBrewer minimal n value is no longer thrown (#1999) 

R/plotly_build.R

@@ -37,6 +37,11 @@ plotly_build.gg <- function(p, registerFrames = TRUE) {
   plotly_build(ggplotly(p))
 }
 
+#' @export
+plotly_build.ggmatrix <- function(p, registerFrames = TRUE) {
+  plotly_build(ggplotly(p))
+}
+
 #' @export
 plotly_build.plotly <- function(p, registerFrames = TRUE) {