{"id":6534,"date":"2024-12-03T13:28:18","date_gmt":"2024-12-03T18:28:18","guid":{"rendered":"https:\/\/blogs.mathworks.com\/videos\/?p=6534"},"modified":"2024-12-03T13:28:18","modified_gmt":"2024-12-03T18:28:18","slug":"using-a-mat-file-object-to-save-a-variable-in-chunks","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/videos\/2024\/12\/03\/using-a-mat-file-object-to-save-a-variable-in-chunks\/","title":{"rendered":"Using a MAT-File Object to Save a Variable in Chunks"},"content":{"rendered":"<p>I need to save a 50GB string variable to a MAT file. I have noticed that when I use the save command, memory usage is increased temporarily, perhaps while making a copy of the variable. To minimize the peak amount of memory I need, I&#8217;m going to break up the variable and try to save it in chunks using the MAT file object, which I have not used before.<\/p>\n<p>Features covered in this <a href=\"https:\/\/blogs.mathworks.com\/videos\/2015\/10\/29\/matlab-code-along-videos\/\">code-along<\/a> style video include:<\/p>\n<ul>\n<li><tt>matfile<\/tt><\/li>\n<li><tt>save<\/tt><\/li>\n<\/ul>\n<p><div class=\"row\"><div class=\"col-xs-12 containing-block\"><div class=\"bc-outer-container add_margin_20\"><videoplayer><div class=\"video-js-container\"><video data-video-id=\"6365478380112\" data-video-category=\"blog\" data-autostart=\"false\" data-account=\"62009828001\" data-omniture-account=\"mathwgbl\" data-player=\"rJ9XCz2Sx\" data-embed=\"default\" id=\"mathworks-brightcove-player\" class=\"video-js\" controls><\/video><script src=\"\/\/players.brightcove.net\/62009828001\/rJ9XCz2Sx_default\/index.min.js\"><\/script><script>if (typeof(playerLoaded) === 'undefined') {var playerLoaded = false;}(function isVideojsDefined() {if (typeof(videojs) !== 'undefined') {videojs(\"mathworks-brightcove-player\").on('loadedmetadata', function() {playerLoaded = true;});} else {setTimeout(isVideojsDefined, 10);}})();<\/script><\/div><\/videoplayer><\/div><\/div><\/div><\/p>\n<p>Play the video in full screen mode for a better viewing experience.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"thumbnail thumbnail_asset asset_overlay video\"><a href=\"https:\/\/blogs.mathworks.com\/videos\/2024\/12\/03\/using-a-mat-file-object-to-save-a-variable-in-chunks\/?dir=autoplay\"><img decoding=\"async\" src=\"https:\/\/cf-images.us-east-1.prod.boltdns.net\/v1\/static\/62009828001\/c7d38189-17e8-4a7a-83e7-054d4dd0516d\/b5ef291e-2916-45c4-9365-68e1188b6c70\/1280x720\/match\/image.jpg\" onError=\"this.style.display ='none';\"\/><\/p>\n<div class=\"overlay_container\">\n      <span class=\"icon-video icon_color_null\"><time class=\"video_length\">23:50<\/time><\/span>\n      <\/div>\n<p>      <\/a><\/div>\n<p>I need to save a 50GB string variable to a MAT file. I have noticed that when I use the save command, memory usage is increased temporarily, perhaps while making a copy of the variable. To minimize&#8230; <a class=\"read-more\" href=\"https:\/\/blogs.mathworks.com\/videos\/2024\/12\/03\/using-a-mat-file-object-to-save-a-variable-in-chunks\/\">read more >><\/a><\/p>\n","protected":false},"author":133,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[27,4],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/6534"}],"collection":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/users\/133"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/comments?post=6534"}],"version-history":[{"count":6,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/6534\/revisions"}],"predecessor-version":[{"id":6558,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/posts\/6534\/revisions\/6558"}],"wp:attachment":[{"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/media?parent=6534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/categories?post=6534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.mathworks.com\/videos\/wp-json\/wp\/v2\/tags?post=6534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}