r - data.frame without ruining column names -

is there way use data.frame without ruining column names?

i have following structure:

$`canon powershot` [1] 9.997803e-01 9.997318e-01 3.327920e-01 3.327920e-01 9.988220e-01 [6] 4.030871e-05 4.928497e-05  $`casio exilim` [1] 5.322024e-06 9.999646e-01 5.322024e-06 5.322024e-06 9.999646e-01 [6] 5.322024e-06 9.999646e-01  $finepix [1] 3.850036e-05 9.998887e-01 6.650074e-02 6.650074e-02 9.998465e-01 [6] 9.998465e-01 4.345598e-05  $`kodak easyshare` [1] 3.548812e-05 9.998604e-01 3.996137e-01 3.996137e-01 9.987841e-01 [6] 3.179604e-05 2.789861e-05  $`nikon coolpix series` [1] 9.156401e-02 9.998091e-01 1.995972e-01 1.995972e-01 9.996341e-01 [6] 7.033741e-05 8.499410e-05 

but after using do.call(data.frame, my_list), this:

  canon.powershot casio.exilim      finepix kodak.easyshare 1    9.997803e-01 5.322024e-06 3.850036e-05    3.548812e-05 2    9.997318e-01 9.999646e-01 9.998887e-01    9.998604e-01 3    3.327920e-01 5.322024e-06 6.650074e-02    3.996137e-01 4    3.327920e-01 5.322024e-06 6.650074e-02    3.996137e-01 5    9.988220e-01 9.999646e-01 9.998465e-01    9.987841e-01 6    4.030871e-05 5.322024e-06 9.998465e-01    3.179604e-05 7    4.928497e-05 9.999646e-01 4.345598e-05    2.789861e-05   nikon.coolpix.series 1         9.156401e-02 2         9.998091e-01 3         1.995972e-01 4         1.995972e-01 5         9.996341e-01 6         7.033741e-05 7         8.499410e-05 

(note there . instead of ' ' in column names)

you can stop r changing names syntatically valid names setting check.names = false. see ?data.frame details.

# assuming data in list called my_list do.call(data.frame, c(my_list, check.names = false))