soiltexture_gui: Text-based menu for plotting and classifying soil texture...
In soiltexture: Functions for Soil Texture Plot, Classification and Transformation

Description Usage Arguments Value Author(s) Examples

Text-based menu for plotting and classifying soil texture

data.

If you simply want to obtain a figure with an

empty soil texture triangle, just call

soiltexture_gui() and follow the instructions.

If you want to a figure with your own soil texture data

on top of a texture triangle, you must first prepare

a tabular text file containing your texture data, as

.txt or .csv. Such a file can be prepared

with MS Excel or Libre Office, and exported

as CSV ("CSV (comma delimited) (*.csv)" or "CSV (MS-DOS)

(*.csv)" for example). The table must contain

headers (column names) and it must the following

columns and headers: CLAY, SILT and

SAND. Other columns are allowed and will be ignored.

In the texture data file, each row represent a record

(a sample) and each column a variable.

You will be asked about the format of this text file, in

particular about the field / column separator (it can be

commas, semi-colons, tabulations or (multiple) spaces)

and the decimal mark (comma or dot). The file encoding

can be either the native encoding of the computer, or

UTF-8 (without BOM).

The sum of the texture of each row must be either 1 (if

expressed as a fraction) or 100 (if expressed as a

percentage). You will be asked about the unit. Only small

divergences from 1 or 100 are allowed, but you will be

asked if you want to normalise your data beforehand, so

larger divergences are possible.

You will also be asked which texture classification system

you want to use (FAO, USDA, etc.). It is possible to

plot a texture triangle without texture classification.

Finally, if you have chosen a texture classification system,

soiltexture_gui can classify each record according

to this classification system and

return you the texture class of each record,

as a CSV text file.

The texture triangle is show to you with R default

graphical device, and you can choose to export a

PNG figure of the resulting texture triangle (between

512 and 2048 pixel width/height, depending on what you

chose).

1	soiltexture_gui(main = NULL, graphics = FALSE, ...)

main

Single character string. Main title of the texture

diagram. Set to NA to obtain a a slightly bigger

figure, with no title. See TT.plot.

graphics

See select.list.

...

Additional parameters passed to

soiltexture:::.read.table.menu or

(subsequently) to read.table.

Either NULL if no texture data was imported,

or a data.frame (if texture data was

imported). The texture classification is also returned

(when the user asked for a texture classification).

Julien Moeys [aut, cre], Wei Shangguan [ctb], Rainer Petzold [ctb], Budiman Minasny [ctb], Bogdan Rosca [ctb], Nic Jelinski [ctb], Wiktor Zelazny [ctb], Rodolfo Marcondes Silva Souza [ctb], Jose Lucas Safanelli [ctb], Alexandre ten Caten [ctb]

library( "soiltexture" )





#   Call the text graphical user interface





soiltexture_gui()





#   ... and follow the instructions indicated to you!