[R-sig-eco] correlation plot in color

[Manuel Esteban Lucas Borja]

Dear Drew,
Thank you very much for your help. The thing is that when I import the dataset containing categorical and numeric variables and then I want to calculate the correlation graphic, Rstudio says that it is not posible as categorical variables can not be used for correlation. So, which is the code for calculating correlation plots including a categorical variable, which will be them used for adding colours depending of the levels of this categorical factor?
Thanks a lot for your advise, I really apreciate your help.
Best
Manuel




Manuel Esteban Lucas Borja
Profesor Contratado Doctor Interino / Assistant Professor
Coordinador de Relaciones Internacionales del Campus de Albacete/Coordinator for International Relations on Albacete Campus

Universidad de Castilla-La Mancha
E.T.S. Ingenieros Agrónomos y de Montes / Higher Technical School of Agricultural and Forestry Engineering | Campus Universitario s/n | C.P. 02071 Albacete
Tfno: 967 599 200 | Ext: 2818 |


________________________________
From: Drew Tyre <atyre2 using unl.edu>
Sent: Sunday, March 22, 2020 2:12:31 PM
To: Manuel Esteban Lucas Borja <ManuelEsteban.Lucas using uclm.es>; r-sig-ecology using r-project.org <r-sig-ecology using r-project.org>
Subject: Re: [R-sig-eco] correlation plot in color

Manuel,

T may be getting interpreted as TRUE, not your variable name. Try renaming the variable to something else and see if that helps.

--
Drew Tyre

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On 3/21/20, 8:32 PM, "R-sig-ecology on behalf of Manuel Esteban Lucas Borja" <r-sig-ecology-bounces using r-project.org on behalf of ManuelEsteban.Lucas using uclm.es> wrote:

    Dear all,



    First of all, I hope this email will find you well.



    I am working with a biological dataset (please see in attachment) composed by 5 variables. The columns EMF, Biodiversity, MDS1 and MDS2 are numerical variables whereas T is a categorical one.



    I would like to obtain a correlation chart showing correlation coefficients, histograms and different colours for each observation following the categorical variable "T". Please see below the initial chart I got but in which observations are not classified in different colours following the categorical variable "T".



    This is the code I used with any positive result back.



    corrMatOrder (dataset, histogram = T, pch = 19, method= spearman, family="CM Roman", col=c("red", "green3", "blue", "black")[code.levels(dataset$T)])



    I work with Rstudio. Thank you very much for your time and help.

    Best



    Manuel


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