Changes in version 0.1.3 (2025-09-20)                  

  - as.grob for tmap object, defined in the 'tmap' package (2025-09-20,
    Sat)
  - replace aes_ with aes (2025-09-20, Sat)

                 Changes in version 0.1.2 (2023-08-09)                  

  - support oncoplot object in 'aplot' and 'aplotExtra' (2023-07-18,
    Tue)

                 Changes in version 0.1.1 (2023-06-27)                  

  - supports gglist object (2023-06-26, Mon)

                 Changes in version 0.1.0 (2021-09-02)                  

  - supports bbplot object (2021-09-02, Thu)

                 Changes in version 0.0.9 (2021-08-20)                  

  - import yulab.utils (2021-08-20, Fri)
  - ... parameter in as.ggplot (2021-08-06, Fri)

                 Changes in version 0.0.8 (2021-08-04)                  

  - allows passing envir to base2grob (2021-08-04, Wed, #11)

                 Changes in version 0.0.7 (2021-05-11)                  

  - patchwork object supported (2021-05-11, Tue)

                 Changes in version 0.0.6 (2021-04-22)                  

  - aplot object supported (2020-03-27, Fri)
      - https://github.com/YuLab-SMU/aplot
  - angle parameter in as.ggplot (2020-03-16, Mon)

                 Changes in version 0.0.5 (2020-03-12)                  

  - hjust and vjust parameters in as.ggplot (2020-03-11, Wed)
  - grid2grob for all plot generated by grid (2019-08-21, Wed)
      - can be converted also using expression or function that
        supported in previous version

                 Changes in version 0.0.4 (2019-08-06)                  

  - as.grob method for Heatmap object (defined in ComplexHeatmap
    package) (2019-08-06, Tue)
  - as.grob method for eulergram object (defined in eulerr package)
    (2019-05-09, Thu)
      - https://github.com/GuangchuangYu/ggplotify/issues/5

                 Changes in version 0.0.3 (2018-08-03)                  

  - as.grob method for pheatmap object (2018-08-03, Fri)
      - thanks to my PR: https://github.com/raivokolde/pheatmap/pull/43
  - support converting magick-image to grob and ggplot object.
    (2018-04-25, Wed)
  - redefined as.grob as S3 Generics.

                 Changes in version 0.0.2 (2018-04-24)                  

  - add NEWS.md, README and example in man (2018-04-24, Tue)

                        Changes in version 0.0.1                        

  - as.grob by combining ggimage::toGrob and base2grob package which was
    deprecated
      - as.grob can convert base plot or grid plot (e.g. vcd, UpSetR
        packages) to grob object
  - as.ggplot supports all as.grob-supported plots.

                        Changes in version 0.0.0                        

embed base to grid plot (2015, ChIPseeker)

I figured out a way to embed base plot (vennpie) to grid plot (upset)
when developing upsetplot function in ChIPseeker package for visualizing
overlap of ChIPseq data in 2015,
http://guangchuangyu.github.io/2015/07/upsetplot-in-chipseeker/.

embed ggplot (2015, ggtree and ggimage)

I developed a subview function in ggtree package in 2015, for embeding
subplots,
https://github.com/YuLab-SMU/ggtree/commit/2ab2876d5e92454869c3307ea6f3c8e2656630ef.

This function was re-implemented as geom_subview and packed in the
ggimage package.

embed plots (base, lattic, ggplot or image) to ggplot (2017, ggimage and hexSticker)

In the early of 2017, I started to develop R script to produce ggtree
sticker. @lgatto first came out with an idea of makeing an R package for
producing hex sticker by packing my script into a function,
https://github.com/Bioconductor/BiocStickers/issues/12. I have several
ideas to improve the package, including producing print-ready figure,
employing modular design and supporting grammar of graphics, as well as
supporting subplot generated by base and lattice. I started to develop
the hexSticker package,
https://github.com/GuangchuangYu/hexSticker/issues/2, with base plot,
lattice, ggplot2 and image file supported as subplot, which was actually
implemented in ggimage (toGrob function, image file are supported by
geom_image).

convert base to grob (2018, base2grob)

I wrote a blog post,
http://guangchuangyu.github.io/cn/2018/03/five-questions-of-meme/, to
ask questions based on the meme package to help users understand
ggplot2.

After I wrote the sentence:

if you know how ggsave works, you can even extend it to support base
plot

I started to extend ggsave to support base plot by using formula or
expression, e.g. ggsave(~base_plot).

After that, I asked myself, why not extending cowplot to support base
plot with the fact that I already have source code to convert base plot
to grob object (ggimage:::toGrob). Then I developed the base2grob
package and submit it to CRAN.

convert (almost all) plots to ggplot (2018, ggplotify)

I wrote a blog post, http://guangchuangyu.github.io/cn/2018/04/ggvenn/,
to introduce ggvenn function (in yyplot package, only available on
GitHub), and started to play with the UpSetR package. I believe upset
plot contains too much empty space and can embed a venn plot as I did
in 2015 with vennpie. I created a PR,
https://github.com/hms-dbmi/UpSetR/pull/112, to make it possible to
capture upset output and be able to be converted to grob object. I
thought it would be more easy if I further convert the object to ggplot
then I can directly use ggimage::geom_subview() to embed ggvenn inside
upset plot. With this idea, I started to implement as.ggplot function.

Then, I suddenly realized that I should packed as.ggplot,
ggimage:::toGrob and base2grob into a single package. That's why we have
ggplotify, which contains as.grob to convert plots to grob and as.ggplot
to convert plots to ggplot objects.