[R] dir and pattern = ".r"

Fri Feb 28 18:41:25 CET 2020

You _need_ to learn how regular expressions work. There are many dozens of ways to learn this topic... web tutorials, YouTube videos, reading the ?regex help page in R. Start at the beginning, and look for special characters like ".", "$", and "\." (which has to be "\\." in R). It shouldn't take long to pick up enough skill to solve this yourself, and you will be a more complete data analyst for it.

On February 28, 2020 9:23:02 AM PST, Patrick Giraudoux <patrick.giraudoux using univ-fcomte.fr> wrote:
>I have this directory contain listed at the page bottom
>
>Can somebody tell me why with
>
>dir(pattern = ".txt")
>
>dir(pattern = ".dbf")
>
>etc.
>
>I get exactly what I want (a vector with the file names correctly 
>suffixed), but with
>
>dir(pattern = ".r")
>
>I get this:
>
>> dir(pattern=".r") [1] "Article Predation" "BD Carto" [3] "broma1.txt"
>
>"broma3.txt" [5] "BromaBusesMilanMicha.xlsx" "Bromadiolone" [7] 
>"BufferRenard.dbf" "BufferRenard.prj" [9] "BufferRenard.shp" 
>"BufferRenard.shx" [11] "clpboard" "DatesDiurnes.txt" [13] 
>"DatesDiurnes_plus.txt" "DatesDiurnes_plus.xlsx" [15] 
>"DatesDiurnesFREDON" "DatesDiurnesFREDON_plus.txt" [17] 
>"DatesDiurnesFREDON_plus.xlsx" "DatesDiurnesRegis.txt" [19] 
>"DatesDiurnesRegis_plus.txt" "DatesDiurnesRegis_plus.xlsx" [21] 
>"DatesNocturnes.txt" "DatesNocturnes_plus.txt" [23] 
>"DatesNocturnes_plus.xlsx" "DatesNocturnesFREDON" [25] 
>"DatesNocturnesFREDON_plus.txt" "DatesNocturnesFREDON_plus.xlsx" [27] 
>"DatesNocturnesRegis.txt" "DatesNocturnesRegis_plus.txt" [29] 
>"DatesNocturnesRegis_plus.xlsx" "Figures" [31] "ParcBuf300n.dbf" 
>"ParcBuf300n.prj" [33] "ParcBuf300n.shp" "ParcBuf300n.shx" [35] 
>"ParcBuf350n.dbf" "ParcBuf350n.prj" [37] "ParcBuf350n.shp" 
>"ParcBuf350n.shx" [39] "Script_190517_preparation.r" 
>"Script_190518_scores_AT.r" [41] "Script_190519_1430_cinetiques_IKA.r" 
>"Script_190519_1622_transects_camp.r" [43] 
>"Script_190530_1700_preparation2.r" 
>"Script_190530_1903_cinetiques_IKA2.r" [45] 
>"Script_190531_0922_scores_AT2.r" "Script_190531_1729_prey_resource.r" 
>[47] "Script_190601_1509_graphIKAd.r" 
>"Script_190601_1509_graphIKAd_old.r" [49] 
>"Script_190601_1509_graphIKAn.r" "Script_190601_1509_graphIKAn_old.r" 
>[51] "Script_190601_1955_spatial.r" "Script_190708_0930_distance.r"
>[53] 
>"Script_190709_0930_impact renard.r" 
>"Script_200117_cinetiques_article.r" [55] 
>"Script_200119_source_stats_explore_diurne.r" "Script_200119_stats.r" 
>[57] "Script_200122_spatial_distribution.r" "Script_200124_distance.r" 
>[59] "Script_200124_distance_source_d.r" 
>"Script_200124_distance_source_n.r" [61] 
>"Script_200201_impacts_on_prey.R" "ScriptCompteLignes.r" [63] 
>"Scripts_avant_200112.zip" "shinyPred" [65] "StudyArea.dbf" 
>"StudyArea.prj" [67] "StudyArea.shp" "StudyArea.shx" [69] 
>"SurfaceZoneEtude.dbf" "SurfaceZoneEtude.prj" [71] 
>"SurfaceZoneEtude.shp" "SurfaceZoneEtude.shx" [73]
>"transects_camp.Rdata"
>
>
>How can I get all the files, only these files, suffixed with ".r" ?
>
>Thanks in advance,
>
>------------------------------------------------------------------------
>
>
>> dir() [1] "Analyse_190523_baseline_190523_1506.docx" 
>"Analyse_190523_baseline_190531_2110.docx" [3] 
>"Analyse_190523_baseline_190531_2110.Rmd"
>"Analyse_190531_baseline.docx" 
>[5] "Analyse_190531_baseline.Rmd" "Analyse_190531_baseline_cache" [7] 
>"Analyse_190531_baseline_files" "Analyse_190603_spatial.docx" [9] 
>"Analyse_190603_spatial.Rmd" "Analyse_190603_spatial_cache" [11] 
>"Analyse_190603_spatial_files" "Article Predation" [13] "BD Carto" 
>"Biblio" [15] "broma1.txt" "broma3.txt" [17]
>"BromaBusesMilanMicha.xlsx" 
>"Bromadiolone" [19] "BufferRenard.dbf" "BufferRenard.prj" [21] 
>"BufferRenard.shp" "BufferRenard.shx" [23] "clpboard"
>"DatesDiurnes.txt" 
>[25] "DatesDiurnes_plus.txt" "DatesDiurnes_plus.xlsx" [27] 
>"DatesDiurnesFREDON" "DatesDiurnesFREDON_plus.txt" [29] 
>"DatesDiurnesFREDON_plus.xlsx" "DatesDiurnesRegis.txt" [31] 
>"DatesDiurnesRegis_plus.txt" "DatesDiurnesRegis_plus.xlsx" [33] 
>"DatesNocturnes.txt" "DatesNocturnes_plus.txt" [35] 
>"DatesNocturnes_plus.xlsx" "DatesNocturnesFREDON" [37] 
>"DatesNocturnesFREDON_plus.txt" "DatesNocturnesFREDON_plus.xlsx" [39] 
>"DatesNocturnesRegis.txt" "DatesNocturnesRegis_plus.txt" [41] 
>"DatesNocturnesRegis_plus.xlsx" "Figures" [43] "IKAZ_old.zip" 
>"IKAZ1999.txt" [45] "IKAZ2000.txt" "IKAZ2007.txt" [47] "IKAZ2008.txt" 
>"IKAZ2009.txt" [49] "IKAZ2010.txt" "IKAZ2011.txt" [51] "IKAZ2012.txt" 
>"IKAZ2013.txt" [53] "IKAZ2014.txt" "IKAZ2015.txt" [55] "IKAZ2016.txt" 
>"IKAZ2017.txt" [57] "IKAZ2018.txt" "ParcBuf300n.dbf" [59] 
>"ParcBuf300n.prj" "ParcBuf300n.shp" [61] "ParcBuf300n.shx" 
>"ParcBuf350n.dbf" [63] "ParcBuf350n.prj" "ParcBuf350n.shp" [65] 
>"ParcBuf350n.shx" "Photos ZELAC" [67] "plot.ds.R" "plot.dsmodel.R" [69]
>
>"RData" "Script_190517_preparation.r" [71] "Script_190518_scores_AT.r" 
>"Script_190519_1430_cinetiques_IKA.r" [73] 
>"Script_190519_1622_transects_camp.r" 
>"Script_190530_1700_preparation2.r" [75] 
>"Script_190530_1903_cinetiques_IKA2.r"
>"Script_190531_0922_scores_AT2.r" 
>[77] "Script_190531_1729_prey_resource.r" 
>"Script_190601_1509_graphIKAd.r" [79] 
>"Script_190601_1509_graphIKAd_old.r" "Script_190601_1509_graphIKAn.r" 
>[81] "Script_190601_1509_graphIKAn_old.r"
>"Script_190601_1955_spatial.r" 
>[83] "Script_190708_0930_distance.r" "Script_190709_0930_impact 
>renard.r" [85] "Script_200117_cinetiques_article.r" 
>"Script_200119_source_stats_explore_diurne.r" [87] 
>"Script_200119_stats.r" "Script_200122_spatial_distribution.r" [89] 
>"Script_200124_distance.r" "Script_200124_distance_source_d.r" [91] 
>"Script_200124_distance_source_n.r" "Script_200201_impacts_on_prey.R" 
>[93] "ScriptCompteLignes.r" "Scripts_avant_200112.zip" [95] "shinyChim"
>
>"ShinyConnect.R" [97] "shinyPred" "StudyArea.dbf" [99] "StudyArea.prj" 
>"StudyArea.shp" [101] "StudyArea.shx" "SurfaceZoneEtude.dbf" [103] 
>"SurfaceZoneEtude.prj" "SurfaceZoneEtude.shp" [105] 
>"SurfaceZoneEtude.shx" "transects_camp.Rdata"
>
>
>	[[alternative HTML version deleted]]
>
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-- 
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