Lists • ttdviewer

library(ttdviewer)
library(listviewerlite)
library(lobstr)

This vignette covers viewing list objects in the ttdviewer package.

List object

Below we’ll define a list with two #TidyTuesday datasets and store it in ttd2:

ttd2 <- load_tt_data("Space Launches")
#> INFO [2025-07-24 06:21:59] Starting import for agencies.csv from https://raw.githubusercontent.com/rfordatascience/tidytuesday/refs/heads/main/data/2019/2019-01-15/agencies.csv
#> SUCCESS [2025-07-24 06:22:00] Successfully loaded agencies.csv
#> INFO [2025-07-24 06:22:00] Starting import for launches.csv from https://raw.githubusercontent.com/rfordatascience/tidytuesday/refs/heads/main/data/2019/2019-01-15/launches.csv
#> SUCCESS [2025-07-24 06:22:00] Successfully loaded launches.csv

ctr()

ctr() is a custom folder tree function made with lobstr::tree():

ctr <- function(x = as.list(), depth = 10L, length = 50L) {
  lobstr::tree(x,
    max_depth = depth,
    max_length = length,
    show_environments = FALSE,
    show_attributes = FALSE,
    hide_scalar_types = TRUE,
    class_printer = crayon::blue,
    remove_newlines = TRUE,
    val_printer = crayon::green
  )
}

ctr(x = ttd2)

<list>
├─agencies.csv: S3<spec_tbl_df/tbl_df/tbl/data.frame>
│ ├─agency<chr [74]>: "RVSN", "UNKS", "NASA", "USAF", "AE", "AFSC", "VKSR", "CALT", "FKA", "SAST", ...
│ ├─count<dbl [74]>: 1528, 904, 469, 388, 258, 247, 200, 181, 128, 105, ...
│ ├─ucode<chr [74]>: "RVSN", "GUKOS", "NASA", "USAF", "AE", "AFSC", "GUKOS", "CALT", "MOM", "SBA", ...
│ ├─state_code<chr [74]>: "SU", "SU", "US", "US", "F", "US", "RU", "CN", "RU", "CN", ...
│ ├─type<chr [74]>: "O/LA", "O/LA", "O/LA/LV/PL/S", "O/LA/S", "O/LA", "LA", "O/LA", "LA/LV/PL/E", "O/LA", "O/LA/LV/PL", ...
│ ├─class<chr [74]>: "D", "D", "C", "D", "B", "D", "D", "C", "C", "B", ...
│ ├─tstart<chr [74]>: "1960", "1986 Apr 24", "1958 Oct  1", "1947 Sep 18", "1980 Mar 26", "1961 Apr  1", "1997 Jul", "1957 Nov 11", "2004", "1993", ...
│ ├─tstop<chr [74]>: "1991 Dec", "1991", "-", "-", "*", "1992 Jul  1", "2001 Jun  1", "-", "2016 Jan  1", "-", ...
│ ├─short_name<chr [74]>: "RVSN", "UNKS", "NASA", "USAF", "Arianespace", "AFSC", "VKS RVSN", "CALT", "Roskosmos", "SAST", ...
│ ├─name<chr [74]>: "Rakentiye Vo...", "Upravleniye...", "National Aer...", "United State...", "Arianespace,...", "US Air Force...", "Voenno-Kosmi...", "Zhongguo yun...", "Federal'noe...", "Shanghai han...", ...
│ ├─location<chr [74]>: "Mosvka?", "Moskva", "Washington,...", "Washington,...", "Paris-Evry,...", "El Segundo,...", "Mosvka-Solne...", "Beijing-Nanyuan", "Moskva", "Shanghai-Min...", ...
│ ├─longitude<chr [74]>: "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", ...
│ ├─latitude<chr [74]>: "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", ...
│ ├─error<chr [74]>: "-", "-", "-", "-", "-", "-", "-", "-", "-", "-", ...
│ ├─parent<chr [74]>: "-", "MO", "-", "-", "-", "USAF", "RVSN", "CASC", "-", "CASC", ...
│ ├─short_english_name<chr [74]>: "-", "-", "-", "-", "Arianespace", "-", "-", "CALT", "-", "-", ...
│ ├─english_name<chr [74]>: "Strategic Ro...", "-", "-", "-", "-", "-", "Russian Mili...", "Chinese Acad...", "Roskosmos", "Shanghai Aca...", ...
│ ├─unicode_name<chr [74]>: "Ракетные вой...", "Управление н...", "National Aer...", "United State...", "Arianespace,...", "US Air Force...", "Военно-косми...", "中国运载火箭技术研究院", "Федеральное...", "上海航天技术研究院", ...
│ └─agency_type<chr [74]>: "state", "state", "state", "state", "private", "state", "state", "state", "state", "state", ...
└─launches.csv: S3<spec_tbl_df/tbl_df/tbl/data.frame>
  ├─tag<chr [5,726]>: "1967-065", "1967-080", "1967-096", "1968-042", "1968-092", "1969-062", "1970-012", "1970-070", "1971-012", "1971-054", ...
  ├─JD<dbl [5,726]>: 2439671.38, 2439725.7, 2439774.83, 2439999.69, 2440152.69, 2440425.69, 2440628.86, 2440832.86, 2440999.66, 2441111.08, ...
  ├─launch_date<dbl [5,726]>: 1967-06-29, 1967-08-23, 1967-10-11, 1968-05-23, 1968-10-23, 1969-07-23, 1970-02-11, 1970-09-03, 1971-02-17, 1971-06-08, ...
  ├─launch_year<dbl [5,726]>: 1967, 1967, 1967, 1968, 1968, 1969, 1970, 1970, 1971, 1971, ...
  ├─type<chr [5,726]>: "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", ...
  ├─variant<chr [5,726]>: "NA", "NA", "NA", "NA", "NA", "NA", "NA", "NA", "NA", "NA", ...
  ├─mission<chr [5,726]>: "Secor Type I...", "DAPP 3419", "DAPP 4417", "DAPP 5420", "DAPP 6422", "DAPP 7421", "DAPP Block 5...", "DAPP Block 5...", "DAPP Block 5...", "P70-1", ...
  ├─agency<chr [5,726]>: "US", "US", "US", "US", "US", "US", "US", "US", "US", "US", ...
  ├─state_code<chr [5,726]>: "US", "US", "US", "US", "US", "US", "US", "US", "US", "US", ...
  ├─category<chr [5,726]>: "O", "O", "O", "O", "O", "O", "O", "O", "O", "O", ...
  └─agency_type<chr [5,726]>: "state", "state", "state", "state", "state", "state", "state", "state", "state", "state", ...

listviewerlite::listview()

The listview() from listviewerlite provides an HTML collapsible object:

listviewerlite::listview(x = ttd2)

<named list [1:2]>
- agencies.csv <named list [1:19]>
  - agency <character [1:74]> "RVSN", "UNKS", "NASA", "USAF", "AE", "AFSC", "VKSR", "CALT", …
  - count <double [1:74]> 1528, 904, 469, 388, 258, 247, 200, 181, …
  - ucode <character [1:74]> "RVSN", "GUKOS", "NASA", "USAF", "AE", "AFSC", "GUKOS", "CALT", …
  - state_code <character [1:74]> "SU", "SU", "US", "US", "F", "US", "RU", "CN", …
  - type <character [1:74]> "O/LA", "O/LA", "O/LA/LV/PL/S", "O/LA/S", "O/LA", "LA", "O/LA", "LA/LV/PL/E", …
  - class <character [1:74]> "D", "D", "C", "D", "B", "D", "D", "C", …
  - tstart <character [1:74]> "1960", "1986 Apr 24", "1958 Oct 1", "1947 Sep 18", "1980 Mar 26", "1961 Apr 1", "1997 Jul", "1957 Nov 11", …
  - tstop <character [1:74]> "1991 Dec", "1991", "-", "-", "*", "1992 Jul 1", "2001 Jun 1", "-", …
  - short_name <character [1:74]> "RVSN", "UNKS", "NASA", "USAF", "Arianespace", "AFSC", "VKS RVSN", "CALT", …
  - name <character [1:74]> "Rakentiye Voisk…", "Upravleniye Nac…", "National Aerona…", "United States A…", "Arianespace, In…", "US Air Force Sy…", "Voenno-Kosmiche…", "Zhongguo yunzai…", …
  - location <character [1:74]> "Mosvka?", "Moskva", "Washington, D.C.", "Washington, DC-…", "Paris-Evry, Fra…", "El Segundo, Cal…", "Mosvka-Solnechn…", "Beijing-Nanyuan", …
  - longitude <character [1:74]> "-", "-", "-", "-", "-", "-", "-", "-", …
  - latitude <character [1:74]> "-", "-", "-", "-", "-", "-", "-", "-", …
  - error <character [1:74]> "-", "-", "-", "-", "-", "-", "-", "-", …
  - parent <character [1:74]> "-", "MO", "-", "-", "-", "USAF", "RVSN", "CASC", …
  - short_english_name <character [1:74]> "-", "-", "-", "-", "Arianespace", "-", "-", "CALT", …
  - english_name <character [1:74]> "Strategic Rocke…", "-", "-", "-", "-", "-", "Russian Militar…", "Chinese Academy…", …
  - unicode_name <character [1:74]> "Ракетные войска…", "Управление нача…", "National Aerona…", "United States A…", "Arianespace, In…", "US Air Force Sy…", "Военно-космичес…", "中国运载火箭技术研究院", …
  - agency_type <character [1:74]> "state", "state", "state", "state", "private", "state", "state", "state", …
- launches.csv <named list [1:11]>
  - tag <character [1:5726]> "1967-065", "1967-080", "1967-096", "1968-042", "1968-092", "1969-062", "1970-012", "1970-070", …
  - JD <double [1:5726]> 2439671.38, 2439725.7, 2439774.83, 2439999.69, 2440152.69, 2440425.69, 2440628.86, 2440832.86, …
  - launch_date <double [1:5726]> 1967-06-29, 1967-08-23, 1967-10-11, 1968-05-23, 1968-10-23, 1969-07-23, 1970-02-11, 1970-09-03, …
  - launch_year <double [1:5726]> 1967, 1967, 1967, 1968, 1968, 1969, 1970, 1970, …
  - type <character [1:5726]> "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", "Thor Burner 2", …
  - variant <character [1:5726]> NA, NA, NA, NA, NA, NA, NA, NA, …
  - mission <character [1:5726]> "Secor Type II S…", "DAPP 3419", "DAPP 4417", "DAPP 5420", "DAPP 6422", "DAPP 7421", "DAPP Block 5A F…", "DAPP Block 5A F…", …
  - agency <character [1:5726]> "US", "US", "US", "US", "US", "US", "US", "US", …
  - state_code <character [1:5726]> "US", "US", "US", "US", "US", "US", "US", "US", …
  - category <character [1:5726]> "O", "O", "O", "O", "O", "O", "O", "O", …
  - agency_type <character [1:5726]> "state", "state", "state", "state", "state", "state", "state", "state", …

Three datasets

Below we create a list with three #TidyTuesday datasets and store it in ttd3:

ttd3 <- load_tt_data("Moore’s Law")
#> INFO [2025-07-24 06:22:00] Starting import for cpu.csv from https://raw.githubusercontent.com/rfordatascience/tidytuesday/refs/heads/main/data/2019/2019-09-03/cpu.csv
#> SUCCESS [2025-07-24 06:22:00] Successfully loaded cpu.csv
#> INFO [2025-07-24 06:22:00] Starting import for gpu.csv from https://raw.githubusercontent.com/rfordatascience/tidytuesday/refs/heads/main/data/2019/2019-09-03/gpu.csv
#> SUCCESS [2025-07-24 06:22:00] Successfully loaded gpu.csv
#> INFO [2025-07-24 06:22:00] Starting import for ram.csv from https://raw.githubusercontent.com/rfordatascience/tidytuesday/refs/heads/main/data/2019/2019-09-03/ram.csv
#> SUCCESS [2025-07-24 06:22:00] Successfully loaded ram.csv

ctr(x = ttd3)

<list>
├─cpu.csv: S3<spec_tbl_df/tbl_df/tbl/data.frame>
│ ├─processor<chr [176]>: "MP944 (20-bi...", "Intel 4004 (...", "Intel 8008 (...", "NEC μCOM-4 (...", "Toshiba TLCS...", "Intel 4040 (...", "Motorola 680...", "Intel 8080 (...", "TMS 1000 (4-...", "MOS Technolo...", ...
│ ├─transistor_count<dbl [176]>: NA, 2250, 3500, 2500, 2800, 3000, 4100, 6000, 8000, 4528, ...
│ ├─date_of_introduction<dbl [176]>: 1970, 1971, 1972, 1973, 1973, 1974, 1974, 1974, 1974, 1975, ...
│ ├─designer<chr [176]>: "Garrett AiRe...", "Intel", "Intel", "NEC", "Toshiba", "Intel", "Motorola", "Intel", "Texas Instru...", "MOS Technology", ...
│ ├─process<dbl [176]>: NA, 10000, 10000, 7500, 6000, 10000, 6000, 6000, 8000, 8000, ...
│ └─area<dbl [176]>: NA, 12, 14, NA, 32, 12, 16, 20, 11, 21, ...
├─gpu.csv: S3<spec_tbl_df/tbl_df/tbl/data.frame>
│ ├─processor<chr [112]>: "µPD7220 GDC", "ARTC HD63484", "YM7101 VDP", "Tom & Jerry", "VDP1", "Sony GPU", "NV1", "Reality Copr...", "PowerVR", "Voodoo Graphics", ...
│ ├─transistor_count<dbl [112]>: 40000, 60000, 1e+05, 750000, 1e+06, 1e+06, 1e+06, 2600000, 1200000, 1e+06, ...
│ ├─date_of_introduction<dbl [112]>: 1982, 1984, 1988, 1993, 1994, 1994, 1995, 1996, 1996, 1996, ...
│ ├─designer_s<chr [112]>: "NEC", "Hitachi", "Sega", "Flare", "Sega", "Toshiba", "Nvidia, Sega", "SGI", "VideoLogic", "3dfx", ...
│ ├─manufacturer_s<chr [112]>: "NEC", "Hitachi", "Yamaha", "IBM", "Hitachi", "LSI", "SGS", "NEC", "NEC", "TSMC", ...
│ ├─process<dbl [112]>: 5000, NA, NA, NA, 500, 500, 500, 350, 350, 500, ...
│ ├─area<dbl [112]>: NA, NA, NA, NA, NA, NA, 90, 81, NA, NA, ...
│ └─ref<chr [112]>: "[107]", "[108]", "[109]", "[109]", "[110][111]", "[112][113][114]", "[110]", "[115]", "[116]", "[117][118]", ...
└─ram.csv: S3<spec_tbl_df/tbl_df/tbl/data.frame>
  ├─chip_name<chr [47]>: "N/A", "N/A", "?", "SP95", "TMC3162", "?", "?", "?", "?", "1101", ...
  ├─capacity_bits<dbl [47]>: 1, 1, 8, 16, 16, NA, 256, 64, 144, 256, ...
  ├─bit_units<chr [47]>: "Bits", "Bits", "Bits", "Bits", "Bits", "NA", "Bits", "Bits", "Bits", "Bits", ...
  ├─ram_type<chr [47]>: "SRAM (cell)", "DRAM (cell)", "SRAM (bipolar)", "SRAM (bipolar)", "SRAM (TTL)", "SRAM (MOS)", "DRAM (IC)", "SRAM (PMOS)", "SRAM (NMOS)", "SRAM (PMOS)", ...
  ├─transistor_count<dbl [47]>: 6, 1, 48, 80, 96, NA, 256, 384, 864, 1536, ...
  ├─date_of_introduction<dbl [47]>: 1963, 1965, 1965, 1965, 1966, 1966, 1968, 1968, 1968, 1969, ...
  ├─manufacturer_s<chr [47]>: "Fairchild", "Toshiba", "SDS, Signetics", "IBM", "Transitron", "NEC", "Fairchild", "Fairchild", "NEC", "Intel", ...
  ├─process<dbl [47]>: NA, NA, NA, NA, NA, NA, NA, NA, NA, 12000, ...
  ├─area<dbl [47]>: NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, ...
  └─ref<chr [47]>: "[162]", "[163][164]", "[162]", "[165]", "[160]", "[159]", "[160]", "[159]", "[159]", "[166][167][168]", ...

listviewerlite::listview(ttd3)

<named list [1:3]>
- cpu.csv <named list [1:6]>
  - processor <character [1:176]> "MP944 (20-bit,…", "Intel 4004 (4-b…", "Intel 8008 (8-b…", "NEC μCOM-4 (4-b…", "Toshiba TLCS-12…", "Intel 4040 (4-b…", "Motorola 6800 (…", "Intel 8080 (8-b…", …
  - transistor_count <double [1:176]> NA, 2250, 3500, 2500, 2800, 3000, 4100, 6000, …
  - date_of_introduction <double [1:176]> 1970, 1971, 1972, 1973, 1973, 1974, 1974, 1974, …
  - designer <character [1:176]> "Garrett AiResea…", "Intel", "Intel", "NEC", "Toshiba", "Intel", "Motorola", "Intel", …
  - process <double [1:176]> NA, 10000, 10000, 7500, 6000, 10000, 6000, 6000, …
  - area <double [1:176]> NA, 12, 14, NA, 32, 12, 16, 20, …
- gpu.csv <named list [1:8]>
  - processor <character [1:112]> "µPD7220 GDC", "ARTC HD63484", "YM7101 VDP", "Tom & Jerry", "VDP1", "Sony GPU", "NV1", "Reality Coproce…", …
  - transistor_count <double [1:112]> 40000, 60000, 1e+05, 750000, 1e+06, 1e+06, 1e+06, 2600000, …
  - date_of_introduction <double [1:112]> 1982, 1984, 1988, 1993, 1994, 1994, 1995, 1996, …
  - designer_s <character [1:112]> "NEC", "Hitachi", "Sega", "Flare", "Sega", "Toshiba", "Nvidia, Sega", "SGI", …
  - manufacturer_s <character [1:112]> "NEC", "Hitachi", "Yamaha", "IBM", "Hitachi", "LSI", "SGS", "NEC", …
  - process <double [1:112]> 5000, NA, NA, NA, 500, 500, 500, 350, …
  - area <double [1:112]> NA, NA, NA, NA, NA, NA, 90, 81, …
  - ref <character [1:112]> "[107]", "[108]", "[109]", "[109]", "[110][111]", "[112][113][114]", "[110]", "[115]", …
- ram.csv <named list [1:10]>
  - chip_name <character [1:47]> "N/A", "N/A", "?", "SP95", "TMC3162", "?", "?", "?", …
  - capacity_bits <double [1:47]> 1, 1, 8, 16, 16, NA, 256, 64, …
  - bit_units <character [1:47]> "Bits", "Bits", "Bits", "Bits", "Bits", NA, "Bits", "Bits", …
  - ram_type <character [1:47]> "SRAM (cell)", "DRAM (cell)", "SRAM (bipolar)", "SRAM (bipolar)", "SRAM (TTL)", "SRAM (MOS)", "DRAM (IC)", "SRAM (PMOS)", …
  - transistor_count <double [1:47]> 6, 1, 48, 80, 96, NA, 256, 384, …
  - date_of_introduction <double [1:47]> 1963, 1965, 1965, 1965, 1966, 1966, 1968, 1968, …
  - manufacturer_s <character [1:47]> "Fairchild", "Toshiba", "SDS, Signetics", "IBM", "Transitron", "NEC", "Fairchild", "Fairchild", …
  - process <double [1:47]> NA, NA, NA, NA, NA, NA, NA, NA, …
  - area <double [1:47]> NA, NA, NA, NA, NA, NA, NA, NA, …
  - ref <character [1:47]> "[162]", "[163][164]", "[162]", "[165]", "[160]", "[159]", "[160]", "[159]", …