{"action":"created","issue":{"url":"https://api.github.com/repos/hadley/ggplot2/issues/1416","labels_url":"https://api.github.com/repos/hadley/ggplot2/issues/1416/labels{/name}","comments_url":"https://api.github.com/repos/hadley/ggplot2/issues/1416/comments","events_url":"https://api.github.com/repos/hadley/ggplot2/issues/1416/events","html_url":"https://github.com/hadley/ggplot2/issues/1416","id":118859208,"number":1416,"title":"geom_curve creates strange dots when used with alpha.","user":{"login":"esovik","id":972827,"avatar_url":"https://avatars.githubusercontent.com/u/972827?v=3","gravatar_id":"","url":"https://api.github.com/users/esovik","html_url":"https://github.com/esovik","followers_url":"https://api.github.com/users/esovik/followers","following_url":"https://api.github.com/users/esovik/following{/other_user}","gists_url":"https://api.github.com/users/esovik/gists{/gist_id}","starred_url":"https://api.github.com/users/esovik/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/esovik/subscriptions","organizations_url":"https://api.github.com/users/esovik/orgs","repos_url":"https://api.github.com/users/esovik/repos","events_url":"https://api.github.com/users/esovik/events{/privacy}","received_events_url":"https://api.github.com/users/esovik/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2015-11-25T15:24:41Z","updated_at":"2015-12-13T23:29:23Z","closed_at":"2015-12-12T12:57:47Z","body":"Using ``geom_curve(alpha = 0.2)`` works great with .pdf, when but when the result is plotted as either .jpg or .png over a certain size, a strange dot appears about 2/3 down the line of the curve.\r\n\r\nCode to reproduce error:\r\n```{r}\r\nrequire(ggplot2)\r\n\r\np <- ggplot(data.frame(), aes(x = 1, xend = 2,y  = 1, yend = 2)) +\r\n  geom_curve(size = 4, alpha = 0.2)\r\n\r\npng(\"pngExample.png\", width = 1000, height = 1000); p; dev.off()\r\njpeg(\"jpgExample.jpg\", width = 1000, height = 1000); p; dev.off()\r\npdf(\"pdfExample.pdf\", width = 10, height = 10); p; dev.off()\r\n```"},"comment":{"url":"https://api.github.com/repos/hadley/ggplot2/issues/comments/164310336","html_url":"https://github.com/hadley/ggplot2/issues/1416#issuecomment-164310336","issue_url":"https://api.github.com/repos/hadley/ggplot2/issues/1416","id":164310336,"user":{"login":"hadley","id":4196,"avatar_url":"https://avatars.githubusercontent.com/u/4196?v=3","gravatar_id":"","url":"https://api.github.com/users/hadley","html_url":"https://github.com/hadley","followers_url":"https://api.github.com/users/hadley/followers","following_url":"https://api.github.com/users/hadley/following{/other_user}","gists_url":"https://api.github.com/users/hadley/gists{/gist_id}","starred_url":"https://api.github.com/users/hadley/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hadley/subscriptions","organizations_url":"https://api.github.com/users/hadley/orgs","repos_url":"https://api.github.com/users/hadley/repos","events_url":"https://api.github.com/users/hadley/events{/privacy}","received_events_url":"https://api.github.com/users/hadley/received_events","type":"User","site_admin":false},"created_at":"2015-12-13T23:29:23Z","updated_at":"2015-12-13T23:29:23Z","body":"Maybe it's a quartz buglet? I definitely see it too."}}