Blog Archives

Version 2.1.1 Released

March 31, 2016
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Version 2.1.1 Released

Hi Folks, ggtern v2.1.1 has just been submitted to CRAN. This includes a number of minor bug fixes, and an additional annotation, permitting the rendering of raster data, say for the inclusion of images. This post will demonstrate the use of this requested feature. Demonstration of Raster Annotation Several people have asked me how they The post

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Version 2.1.0 Released

March 17, 2016
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Version 2.1.0 Released

Version 2.1.0 has just been submitted to CRAN and should be available over the next day or so. This version primarily resolves the recent errors that people have been encountering when using ggtern with the most recent version of ggplot2 (v2.1.0). Specifically, the following errors recently emerged, due to (amongst other changes) a change in The post

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ggtern 2.0 now available

January 16, 2016
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ggtern 2.0 now available

Recently ggplot2 received a severe makeover by releasing version 2.0, and in the spirit of improvement, I thought ggtern should also get an overhaul, so after a few-hundred hours of code review, here is what has changed: Theme elements: Previously, the nomenclature scheme for the new theme elements was a bit all over the shop, The post

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Ternary Interpolation / Smoothing

August 3, 2015
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Ternary Interpolation / Smoothing

For a long time, people have been sending me requests for a suitable smoothing / contouring / interpolation geometry be made available via ggtern, over and above the Kernel Density function. I am very pleased to say, that the recent version 1.0.6 has this feature added. Let me demonstrate how it works. This geometry & The post

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User Request – Shepards Classification of Sediments

July 25, 2014
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User Request – Shepards Classification of Sediments

I received a request overnight on how to render the Shepard’s classification diagram, which is an alternative to the USDA’s textural soil classification. This is quite simple to produce (albeit a little tedious), however, before I walk through the script, immediately below, please see the final result (which you can compare to an original). The The post

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User Request – Disable Limiting Region

June 16, 2014
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User Request – Disable Limiting Region

The other week a user of ggtern ran into a problem where they wanted to use the limit_tern(...) functionality, however there were a few marginal points / paths that extended beyond the limiting region. Under normal circumstances, the standard ggtern behaviour is to strip these points, which can interfere with the desired outcome if they The post

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ggtern 1.0.3.2 on CRAN

June 3, 2014
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An update to ggtern, version 1.0.3.2, is now available on CRAN! This version includes a number of bug fixes: Added convenience functions, and global options for modifying the length of the ternary arrows easily. Fixed broken ggsave function, which was not using the local print function. Fixed geom_errorbarR reference in geom_errorbarT and geom_errorbarL aesthetic check. The post

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New Geometry – Ternary Errorbars

February 2, 2014
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New Geometry – Ternary Errorbars

ggtern 1.0.3.1 has introduced a new series of geometries to represent known errors in data, they are relatively easy to use and are along the lines of the geom_errorbar(...) and geom_errorbarh(...) geometries in ggplot2. Analagous the errorbars in ggplot2, in ggtern, the new geometries are thus listed as follows: geom_errorbarT(…) [Tmin,… The post New...

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ggtern 1.0.3.1 on CRAN

February 1, 2014
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An update to ggtern, version 1.0.3.1, is now available on CRAN! This version includes a number of updates and functionality, which can be summarized below: Inclusion of USDA Soil Classification Data, accessed by: data(USDA) Creation of New geometries for ternary errorbars, ie, geom_errorbarT, geom_errorbarL and geom_errorbarR Creation of convenience functions (theme_showtitles and theme_hidetitles) for hiding… The post ggtern...

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USDA Textural Soil Classification

January 15, 2014
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USDA Textural Soil Classification

Included in the next version (1.0.3.1) of ggtern, will be a new data set, taken from the USDA Textural Soil Classification which we can use to reproduce the original diagram published by the United Stated Department of Agriculture. Firstly let us load the packages and data: Reconstructing the USDA’s Original Plot Now let us construct… The post USDA...

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