{"url":"https://api.github.com/repos/open-cogsci/OpenSesame/issues/460","repository_url":"https://api.github.com/repos/open-cogsci/OpenSesame","labels_url":"https://api.github.com/repos/open-cogsci/OpenSesame/issues/460/labels{/name}","comments_url":"https://api.github.com/repos/open-cogsci/OpenSesame/issues/460/comments","events_url":"https://api.github.com/repos/open-cogsci/OpenSesame/issues/460/events","html_url":"https://github.com/open-cogsci/OpenSesame/issues/460","id":179482257,"node_id":"MDU6SXNzdWUxNzk0ODIyNTc=","number":460,"title":"canvas.copy() doesn't work in 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\n\nWhen copying a canvas to another one under the xpyriment backend, the target canvas stays blank until some more stimuli are drawn onto it. So, here is an example:\n\n``` .python\ncv_orig,cv_target = canvas(),canvas()\ncv_orig.fixdot()\ncv_target.copy(cv_orig)\ncv.target_show()\nclock.sleep(1000) # screen will stay blank\ncv.target.fixdot(x = -100)\ncv.target_show()\nclock.sleep(1000) # screen will show both fixation dots\n```\n\nEduard\n","closed_by":{"login":"smathot","id":594936,"node_id":"MDQ6VXNlcjU5NDkzNg==","avatar_url":"https://avatars.githubusercontent.com/u/594936?v=4","gravatar_id":"","url":"https://api.github.com/users/smathot","html_url":"https://github.com/smathot","followers_url":"https://api.github.com/users/smathot/followers","following_url":"https://api.github.com/users/smathot/following{/other_user}","gists_url":"https://api.github.com/users/smathot/gists{/gist_id}","starred_url":"https://api.github.com/users/smathot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/smathot/subscriptions","organizations_url":"https://api.github.com/users/smathot/orgs","repos_url":"https://api.github.com/users/smathot/repos","events_url":"https://api.github.com/users/smathot/events{/privacy}","received_events_url":"https://api.github.com/users/smathot/received_events","type":"User","user_view_type":"public","site_admin":false},"reactions":{"url":"https://api.github.com/repos/open-cogsci/OpenSesame/issues/460/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"timeline_url":"https://api.github.com/repos/open-cogsci/OpenSesame/issues/460/timeline","performed_via_github_app":null,"state_reason":"completed","pinned_comment":null}