{"group":{"id":1,"name":"Community","lockable":false,"created_at":"2012-01-18T18:02:15.000Z","updated_at":"2026-05-26T00:16:20.000Z","description":"Problems submitted by members of the MATLAB Central community.","is_default":true,"created_by":161519,"badge_id":null,"featured":false,"trending":false,"solution_count_in_trending_period":0,"trending_last_calculated":"2026-05-26T00:00:00.000Z","image_id":null,"published":true,"community_created":false,"status_id":2,"is_default_group_for_player":false,"deleted_by":null,"deleted_at":null,"restored_by":null,"restored_at":null,"description_opc":null,"description_html":null,"published_at":null},"problems":[{"id":1408,"title":"Given the name from the legend, return the handle","description":"Write a function that will return the handle to the desired object. The input for this function will be a string which represents the objects name which has been created through a call to the \"legend\" function.\r\n\r\nExample:\r\n\r\nh_right = plot(1:2,1:2,'ro'); hold on; h_wrong = plot(1:3,1:3,'bx')\r\n\r\nlegend('Right','Wrong');\r\n\r\nh_match = GetHandleByName('Right');\r\n\r\nThe test suite will test for: isequal(h_match,h_right)\r\n\r\n\r\n","description_html":"\u003cp\u003eWrite a function that will return the handle to the desired object. The input for this function will be a string which represents the objects name which has been created through a call to the \"legend\" function.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cp\u003eh_right = plot(1:2,1:2,'ro'); hold on; h_wrong = plot(1:3,1:3,'bx')\u003c/p\u003e\u003cp\u003elegend('Right','Wrong');\u003c/p\u003e\u003cp\u003eh_match = GetHandleByName('Right');\u003c/p\u003e\u003cp\u003eThe test suite will test for: isequal(h_match,h_right)\u003c/p\u003e","function_template":"function h = GetHandleByName(name_str)\r\n  h = 0;\r\nend","test_suite":"%%\r\nh = plot(1:10,1:10,'--r');\r\nhold on\r\nplot(1:10,0:9,'--b')\r\nlegend('Test1','Test2')\r\nassert(isequal(h,GetHandleByName('Test1')))\r\n\r\n%%\r\nclose all\r\nplot(rand(10,1),rand(10,1),'b.')\r\nhold on\r\nh = plot(rand(10,1),rand(10,1),'Marker','.','Color',rand(1,3));\r\nplot(rand(10,1),rand(10,1),'--m')\r\nlegend('Test1','Test2','Test3')\r\nassert(isequal(h,GetHandleByName('Test2')))","published":true,"deleted":false,"likes_count":1,"comments_count":2,"created_by":3096,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":21,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2013-04-01T19:51:45.000Z","updated_at":"2026-05-26T16:51:24.000Z","published_at":"2013-04-01T19:56:45.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWrite a function that will return the handle to the desired object. The input for this function will be a string which represents the objects name which has been created through a call to the \\\"legend\\\" function.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eh_right = plot(1:2,1:2,'ro'); hold on; h_wrong = plot(1:3,1:3,'bx')\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003elegend('Right','Wrong');\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eh_match = GetHandleByName('Right');\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe test suite will test for: isequal(h_match,h_right)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":971,"title":"Siblings of a graphics object","description":"Given a valid, scalar, handle of a graphical object:  find the set of all objects that have the same parent as the original that are not the original.  Sort the handles if needed and return as a column vector, if no siblings, return [].","description_html":"\u003cp\u003eGiven a valid, scalar, handle of a graphical object:  find the set of all objects that have the same parent as the original that are not the original.  Sort the handles if needed and return as a column vector, if no siblings, return [].\u003c/p\u003e","function_template":"function hOut = siblings(hIn)\r\n  hOut = hIn;\r\nend","test_suite":"%%\r\nclose all\r\nhIn = line;\r\nhOut = line;\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n\r\n%%\r\nclose all\r\nhIn = patch;\r\nhOut = line;\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n\r\n%%\r\nclose all\r\nhIn = line;\r\nhOut = sort([line; line]);\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = subplot(1,2,1);\r\nhOut = subplot(1,2,2);\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = figure;\r\nhOut = figure;\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = line;\r\nhOut = [];\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = 0;\r\nhOut = [];\r\n\r\nassert(isequal(siblings(hIn),hOut))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":240,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":16,"test_suite_updated_at":"2012-10-05T15:59:33.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-10-05T15:45:40.000Z","updated_at":"2026-05-26T06:15:53.000Z","published_at":"2012-10-05T15:59:33.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven a valid, scalar, handle of a graphical object: find the set of all objects that have the same parent as the original that are not the original. Sort the handles if needed and return as a column vector, if no siblings, return [].\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"problem_search":{"problems":[{"id":1408,"title":"Given the name from the legend, return the handle","description":"Write a function that will return the handle to the desired object. The input for this function will be a string which represents the objects name which has been created through a call to the \"legend\" function.\r\n\r\nExample:\r\n\r\nh_right = plot(1:2,1:2,'ro'); hold on; h_wrong = plot(1:3,1:3,'bx')\r\n\r\nlegend('Right','Wrong');\r\n\r\nh_match = GetHandleByName('Right');\r\n\r\nThe test suite will test for: isequal(h_match,h_right)\r\n\r\n\r\n","description_html":"\u003cp\u003eWrite a function that will return the handle to the desired object. The input for this function will be a string which represents the objects name which has been created through a call to the \"legend\" function.\u003c/p\u003e\u003cp\u003eExample:\u003c/p\u003e\u003cp\u003eh_right = plot(1:2,1:2,'ro'); hold on; h_wrong = plot(1:3,1:3,'bx')\u003c/p\u003e\u003cp\u003elegend('Right','Wrong');\u003c/p\u003e\u003cp\u003eh_match = GetHandleByName('Right');\u003c/p\u003e\u003cp\u003eThe test suite will test for: isequal(h_match,h_right)\u003c/p\u003e","function_template":"function h = GetHandleByName(name_str)\r\n  h = 0;\r\nend","test_suite":"%%\r\nh = plot(1:10,1:10,'--r');\r\nhold on\r\nplot(1:10,0:9,'--b')\r\nlegend('Test1','Test2')\r\nassert(isequal(h,GetHandleByName('Test1')))\r\n\r\n%%\r\nclose all\r\nplot(rand(10,1),rand(10,1),'b.')\r\nhold on\r\nh = plot(rand(10,1),rand(10,1),'Marker','.','Color',rand(1,3));\r\nplot(rand(10,1),rand(10,1),'--m')\r\nlegend('Test1','Test2','Test3')\r\nassert(isequal(h,GetHandleByName('Test2')))","published":true,"deleted":false,"likes_count":1,"comments_count":2,"created_by":3096,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":21,"test_suite_updated_at":null,"rescore_all_solutions":false,"group_id":1,"created_at":"2013-04-01T19:51:45.000Z","updated_at":"2026-05-26T16:51:24.000Z","published_at":"2013-04-01T19:56:45.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eWrite a function that will return the handle to the desired object. The input for this function will be a string which represents the objects name which has been created through a call to the \\\"legend\\\" function.\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eExample:\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eh_right = plot(1:2,1:2,'ro'); hold on; h_wrong = plot(1:3,1:3,'bx')\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003elegend('Right','Wrong');\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eh_match = GetHandleByName('Right');\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003cw:jc w:val=\\\"left\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eThe test suite will test for: isequal(h_match,h_right)\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"},{"id":971,"title":"Siblings of a graphics object","description":"Given a valid, scalar, handle of a graphical object:  find the set of all objects that have the same parent as the original that are not the original.  Sort the handles if needed and return as a column vector, if no siblings, return [].","description_html":"\u003cp\u003eGiven a valid, scalar, handle of a graphical object:  find the set of all objects that have the same parent as the original that are not the original.  Sort the handles if needed and return as a column vector, if no siblings, return [].\u003c/p\u003e","function_template":"function hOut = siblings(hIn)\r\n  hOut = hIn;\r\nend","test_suite":"%%\r\nclose all\r\nhIn = line;\r\nhOut = line;\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n\r\n%%\r\nclose all\r\nhIn = patch;\r\nhOut = line;\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n\r\n%%\r\nclose all\r\nhIn = line;\r\nhOut = sort([line; line]);\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = subplot(1,2,1);\r\nhOut = subplot(1,2,2);\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = figure;\r\nhOut = figure;\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = line;\r\nhOut = [];\r\n\r\nassert(isequal(siblings(hIn),hOut))\r\n%%\r\nclose all\r\nhIn = 0;\r\nhOut = [];\r\n\r\nassert(isequal(siblings(hIn),hOut))","published":true,"deleted":false,"likes_count":1,"comments_count":0,"created_by":240,"edited_by":null,"edited_at":null,"deleted_by":null,"deleted_at":null,"solvers_count":16,"test_suite_updated_at":"2012-10-05T15:59:33.000Z","rescore_all_solutions":false,"group_id":1,"created_at":"2012-10-05T15:45:40.000Z","updated_at":"2026-05-26T06:15:53.000Z","published_at":"2012-10-05T15:59:33.000Z","restored_at":null,"restored_by":null,"spam":false,"simulink":false,"admin_reviewed":false,"description_opc":"{\"relationships\":[{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/document\",\"relationshipId\":\"rId1\",\"target\":\"/matlab/document.xml\"},{\"relationshipType\":\"http://schemas.mathworks.com/matlab/code/2013/relationships/output\",\"relationshipId\":\"rId2\",\"target\":\"/matlab/output.xml\"}],\"parts\":[{\"partUri\":\"/matlab/document.xml\",\"relationship\":[],\"contentType\":\"application/vnd.mathworks.matlab.code.document+xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?\u003e\u003cw:document xmlns:w=\\\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\\\"\u003e\u003cw:body\u003e\u003cw:p\u003e\u003cw:pPr\u003e\u003cw:pStyle w:val=\\\"text\\\"/\u003e\u003c/w:pPr\u003e\u003cw:r\u003e\u003cw:t\u003eGiven a valid, scalar, handle of a graphical object: find the set of all objects that have the same parent as the original that are not the original. Sort the handles if needed and return as a column vector, if no siblings, return [].\u003c/w:t\u003e\u003c/w:r\u003e\u003c/w:p\u003e\u003c/w:body\u003e\u003c/w:document\u003e\"},{\"partUri\":\"/matlab/output.xml\",\"contentType\":\"text/xml\",\"content\":\"\u003c?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\" standalone=\\\"no\\\" ?\u003e\u003cembeddedOutputs\u003e\u003cmetaData\u003e\u003cevaluationState\u003emanual\u003c/evaluationState\u003e\u003clayoutState\u003ecode\u003c/layoutState\u003e\u003coutputStatus\u003eready\u003c/outputStatus\u003e\u003c/metaData\u003e\u003coutputArray type=\\\"array\\\"/\u003e\u003cregionArray type=\\\"array\\\"/\u003e\u003c/embeddedOutputs\u003e\"}]}"}],"errors":[],"facets":[[],[{"value":"medium","count":2,"selected":false}]],"term":"tag:\"handles\"","page":1,"per_page":50,"sort":"map(difficulty_value,0,0,999) asc"}}