Sparse.model.matrix error message


Sparse.model.matrix error message



I'm trying to create a sparse-matrix and get this error message:



Error: fnames == names(mf) are not all TRUE



I think it has something to do with the column names of my data, maybe you can help.



Here are the column names:



Error: fnames == names(mf) are not all TRUE


colnames(trainDataShrinkage) <-"Bildungsgrad2_Lower_secondary_education"
,"Bildungsgrad3_Upper_secondary_education"
,"Bildungsgrad4_Post-secondary_non-tertiary_education"
,"Bildungsgrad5_Short-cycle_tertiary_education"
,"Bildungsgrad6_Bachelors_or_equivalent_level"
,"Bildungsgrad7_Masters_or_equivalent_level"
,"Bildungsgrad8_Doctoral_or_equivalent_level"
,"Familienstand2_Verheiratet,_getrenntlebend"
,"Familienstand3_Ledig"
,"Familienstand4_Geschieden,_eing._gleichg._Partn._aufgehoben"
,"Familienstand5_Verwitwet,_Lebenspartner/in_verstorben"
,"Familienstand6_Eing._gleichg._Partn.,_zusammenlebend"
,"Geschlecht2_Weiblich"
,"Migrationshintergrund2_direkter_Migrationshintergrund"
,"Migrationshintergrund3_indirekter_Migrationshintergrund"
,"Bundesland2_Hamburg"
,"Bundesland3_Niedersachsen"
,"Bundesland4_Bremen"
,"Bundesland5_Nordrhein-Westfalen"
,"Bundesland6_Hessen"
,"Bundesland7_Rheinland-Pfalz"
,"Bundesland8_Baden-Wuerttemberg"
,"Bundesland9_Bayern"
,"Bundesland10_Saarland"
,"Bundesland11_Berlin_(West_und_Ost)"
,"Bundesland12_Brandenburg"
,"Bundesland13_Mecklenburg-Vorpommern"
,"Bundesland14_Sachsen"
,"Bundesland15_Sachsen-Anhalt"
,"Bundesland16_Thueringen"
,"Unternehmengroesse2_5 bis_10"
,"Unternehmengroesse3_11_bis_unter_20"
,"Unternehmengroesse6_20_bis_unter_100"
,"Unternehmengroesse7_100_bis_unter_200"
,"Unternehmengroesse9_200_bis_unter_2000"
,"Unternehmengroesse10_2000_und_mehr"
,"Erwerbsstatus2_Teilzeitbeschaeftigung"
,"Erwerbsstatus4_Geringfuegig_beschaeftigt"
,"Stundenlohn"
,"AlterEins"
,"AlterZwei"
,"AlterDrei"
,"AlterFuenF"
,"AlterSechs"
,"BildungsjahreEins"
,"BildungsjahreZwei"
,"BildungsjahreDrei"
,"BildungsjahreVier"
,"BildungsjahreFuenf"
,"ArbeitsmarkterfahrungVollzeitEins"
,"ArbeitsmarkterfahrungVollzeitZwei"
,"ArbeitsmarkterfahrungVollzeitDrei"
,"ArbeitsmarkterfahrungVollzeitVier"
,"ArbeitsmarkterfahrungVollzeitFuenf"
,"ArbeitsmarkterfahrungTeilzeitEins"
,"ArbeitsmarkterfahrungTeilzeitZwei"
,"ArbeitsmarkterfahrungTeilzeitDrei"
,"ArbeitsmarkterfahrungTeilzeitVier"
,"ArbeitsmarkterfahrungTeilzeitFuenf"
,"BruttoverdienstLetztenMonatEins"
,"BruttoverdienstLetztenMonatZwei"
,"BruttoverdienstLetztenMonatDrei"
,"BruttoverdienstLetztenMonatVier"
,"BruttoverdienstLetztenMonatFuenf")




1 Answer
1



It does not like some special characters in the column names. I faced issues with column names starting with #, 1, . and /. Can you try to replace these occurrences with '_'.



Simplest way would be to trim your column names off any special characters. Let me know if you cannot rename them due to any limitation.





i replaced all , . / - with _ and still have they same error
– Kurakov
2 days ago





Did you also replace '()' ?
– Kdulam
2 days ago





yes i also replaced()
– Kurakov
2 days ago






okay i found the reason why it didnt worked. I also have to replace spaces with _
– Kurakov
2 days ago





Yes, sorry i forgot to mention Spaces. Its that and any special characters. Glad it worked out. Happy Coding!
– Kdulam
2 days ago






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