Silvia scraped 6443 TidyTuesday Tweets posted between April 02, 2018 and January 31, 2021. I concatenated them into one data set.
| Characteristic | AltTextCat | Total | |||
|---|---|---|---|---|---|
| DefaultDescription | DescriptiveText | ScrapingError | UnavailableNonStatic | ||
| Year | |||||
| 2018 | 565 (80%) | 8 (1.1%) | 64 (9.0%) | 72 (10%) | 709 (100%) |
| 2019 | 1,663 (82%) | 21 (1.0%) | 79 (3.9%) | 259 (13%) | 2,022 (100%) |
| 2020 | 2,861 (85%) | 99 (2.9%) | 105 (3.1%) | 309 (9.2%) | 3,374 (100%) |
| 2021 | 302 (89%) | 26 (7.7%) | 1 (0.3%) | 9 (2.7%) | 338 (100%) |
| Total | 5,391 (84%) | 154 (2.4%) | 249 (3.9%) | 649 (10%) | 6,443 (100%) |
Words were counted using the word_count() function in the qdap R package, with the option to include digits set to TRUE because numbers have important meaning in describing graphs. The median word count for alt text descriptions was 18, with a range of 1 to 170. The following table presents these statistics by year.
| Characteristic | 2018, N = 81 | 2019, N = 211 | 2020, N = 991 | 2021, N = 261 |
|---|---|---|---|---|
| wordCount | 37, 9-68 | 20, 2-68 | 16, 1-170 | 22, 2-109 |
|
1
Median, Minimum-Maximum
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The maximum character count for Twitter alt-text is 420. The median character count for all years is 93, with a range of 8 to 788. The following table provides these statistics by year:
| Characteristic | 2018, N = 81 | 2019, N = 211 | 2020, N = 991 | 2021, N = 261 |
|---|---|---|---|---|
| charCount | 174, 46-323 | 93, 9-312 | 74, 13-788 | 116, 8-603 |
|
1
Median, Minimum-Maximum
|
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| Characteristic | UrlCheck | Total | |
|---|---|---|---|
| IncludesLinks | NoLinks | ||
| Year | |||
| 2018 | 394 (56%) | 315 (44%) | 709 (100%) |
| 2019 | 1,177 (58%) | 845 (42%) | 2,022 (100%) |
| 2020 | 2,069 (61%) | 1,305 (39%) | 3,374 (100%) |
| 2021 | 244 (72%) | 94 (28%) | 338 (100%) |
| Total | 3,884 (60%) | 2,559 (40%) | 6,443 (100%) |