{"action":"created","comment":{"url":"https://api.github.com/repos/mantidproject/mantid/pulls/comments/73510324","id":73510324,"diff_hunk":"@@ -296,12 +358,14 @@ void PDFFourierTransform::exec() {\n     double fs = 0;\n     double error = 0;\n     for (size_t q_index = qmin_index; q_index < qmax_index; q_index++) {\n-      double q = inputQ[q_index];\n-      double deltaq = inputQ[q_index] - inputQ[q_index - 1];\n+      const double q = inputQ[q_index];\n+      const double deltaq = inputQ[q_index] - inputQ[q_index - 1];\n       double sinus = sin(q * r) * deltaq;\n+\n       // multiply by filter function sin(q*pi/qmax)/(q*pi/qmax)\n       if (filter && q != 0) {\n-        sinus *= sin(q * rdelta) / (q * rdelta);\n+        const double lorchKernel = q * M_PI / inputQ[qmax_index];\n+        sinus *= sin(lorchKernel) / lorchKernel;","path":"Framework/Algorithms/src/PDFFourierTransform.cpp","position":195,"original_position":195,"commit_id":"8ea6c2a3de2c9d193786a0452a68af222f52468a","original_commit_id":"8ea6c2a3de2c9d193786a0452a68af222f52468a","user":{"login":"SimonHeybrock","id":12912489,"avatar_url":"https://avatars.githubusercontent.com/u/12912489?v=3","gravatar_id":"","url":"https://api.github.com/users/SimonHeybrock","html_url":"https://github.com/SimonHeybrock","followers_url":"https://api.github.com/users/SimonHeybrock/followers","following_url":"https://api.github.com/users/SimonHeybrock/following{/other_user}","gists_url":"https://api.github.com/users/SimonHeybrock/gists{/gist_id}","starred_url":"https://api.github.com/users/SimonHeybrock/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SimonHeybrock/subscriptions","organizations_url":"https://api.github.com/users/SimonHeybrock/orgs","repos_url":"https://api.github.com/users/SimonHeybrock/repos","events_url":"https://api.github.com/users/SimonHeybrock/events{/privacy}","received_events_url":"https://api.github.com/users/SimonHeybrock/received_events","type":"User","site_admin":false},"body":"I was referring to the factor \\pi.","created_at":"2016-08-04T12:13:18Z","updated_at":"2016-08-04T12:13:18Z","html_url":"https://github.com/mantidproject/mantid/pull/17100#discussion_r73510324","pull_request_url":"https://api.github.com/repos/mantidproject/mantid/pulls/17100","_links":{"self":{"href":"https://api.github.com/repos/mantidproject/mantid/pulls/comments/73510324"},"html":{"href":"https://github.com/mantidproject/mantid/pull/17100#discussion_r73510324"},"pull_request":{"href":"https://api.github.com/repos/mantidproject/mantid/pulls/17100"}}},"pull_request":{"url":"https://api.github.com/repos/mantidproject/mantid/pulls/17100","id":79627694,"html_url":"https://github.com/mantidproject/mantid/pull/17100","diff_url":"https://github.com/mantidproject/mantid/pull/17100.diff","patch_url":"https://github.com/mantidproject/mantid/pull/17100.patch","issue_url":"https://api.github.com/repos/mantidproject/mantid/issues/17100","number":17100,"state":"open","locked":false,"title":"PDFFourierTransform Q-range bugfix","user":{"login":"peterfpeterson","id":404003,"avatar_url":"https://avatars.githubusercontent.com/u/404003?v=3","gravatar_id":"","url":"https://api.github.com/users/peterfpeterson","html_url":"https://github.com/peterfpeterson","followers_url":"https://api.github.com/users/peterfpeterson/followers","following_url":"https://api.github.com/users/peterfpeterson/following{/other_user}","gists_url":"https://api.github.com/users/peterfpeterson/gists{/gist_id}","starred_url":"https://api.github.com/users/peterfpeterson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/peterfpeterson/subscriptions","organizations_url":"https://api.github.com/users/peterfpeterson/orgs","repos_url":"https://api.github.com/users/peterfpeterson/repos","events_url":"https://api.github.com/users/peterfpeterson/events{/privacy}","received_events_url":"https://api.github.com/users/peterfpeterson/received_events","type":"User","site_admin":false},"body":"There was an issue with data being supplied that had `NaN` near the ends and it turned into a `G(r)` that was entirely `NaN` as a result. The solution is to quietly move in the boundaries to avoid the issue.\r\n\r\n**To test:**\r\n\r\nSince a bug was found and a unit test was added to test for it, this should just be a code review and make sure that the builds pass.\r\n\r\n*There was no associated issue*\r\n\r\n---\r\n\r\n#### Reviewer ####\r\n\r\nPlease comment on the following ([full description](http://www.mantidproject.org/Individual_Ticket_Testing)):\r\n\r\n##### Code Review #####\r\n\r\n- [ ] Is the code of an acceptable quality?\r\n- [ ] Does the code conform to the [coding standards](http://www.mantidproject.org/Coding_Standards)? Is it well structured with small focussed classes/methods/functions?\r\n- [ ] Are there unit/system tests in place? Are the unit tests small and test the a class in isolation?\r\n- [ ] If there are changes in the release notes then do they describe the changes appropriately?\r\n\r\n##### Functional Tests #####\r\n\r\n- [ ] Do changes function as described? Add comments below that describe the tests performed?\r\n- [ ] How do the changes handle unexpected situations, e.g. bad input?\r\n- [ ] Has the relevant documentation been added/updated?\r\n- [ ] Is user-facing documentation written in a user-friendly manner?\r\n- [ ] Has developer documentation been updated if required?\r\n\r\n- Does everything look good? Comment with the ship it emoji but don't merge. A member of `@mantidproject/gatekeepers` will take care of it.\r\n","created_at":"2016-08-01T20:06:49Z","updated_at":"2016-08-04T12:13:18Z","closed_at":null,"merged_at":null,"merge_commit_sha":"de4a770f041f2a2b7070a12da1919e2d3eceefd6","assignee":{"login":"SimonHeybrock","id":12912489,"avatar_url":"https://avatars.githubusercontent.com/u/12912489?v=3","gravatar_id":"","url":"https://api.github.com/users/SimonHeybrock","html_url":"https://github.com/SimonHeybrock","followers_url":"https://api.github.com/users/SimonHeybrock/followers","following_url":"https://api.github.com/users/SimonHeybrock/following{/other_user}","gists_url":"https://api.github.com/users/SimonHeybrock/gists{/gist_id}","starred_url":"https://api.github.com/users/SimonHeybrock/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SimonHeybrock/subscriptions","organizations_url":"https://api.github.com/users/SimonHeybrock/orgs","repos_url":"https://api.github.com/users/SimonHeybrock/repos","events_url":"https://api.github.com/users/SimonHeybrock/events{/privacy}","received_events_url":"https://api.github.com/users/SimonHeybrock/received_events","type":"User","site_admin":false},"assignees":[{"login":"SimonHeybrock","id":12912489,"avatar_url":"https://avatars.githubusercontent.com/u/12912489?v=3","gravatar_id":"","url":"https://api.github.com/users/SimonHeybrock","html_url":"https://github.com/SimonHeybrock","followers_url":"https://api.github.com/users/SimonHeybrock/followers","following_url":"https://api.github.com/users/SimonHeybrock/following{/other_user}","gists_url":"https://api.github.com/users/SimonHeybrock/gists{/gist_id}","starred_url":"https://api.github.com/users/SimonHeybrock/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SimonHeybrock/subscriptions","organizations_url":"https://api.github.com/users/SimonHeybrock/orgs","repos_url":"https://api.github.com/users/SimonHeybrock/repos","events_url":"https://api.github.com/users/SimonHeybrock/events{/privacy}","received_events_url":"https://api.github.com/users/SimonHeybrock/received_events","type":"User","site_admin":false}],"milestone":{"url":"https://api.github.com/repos/mantidproject/mantid/milestones/58","html_url":"https://github.com/mantidproject/mantid/milestones/Release%203.8","labels_url":"https://api.github.com/repos/mantidproject/mantid/milestones/58/labels","id":1505614,"number":58,"title":"Release 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