{"id":2041,"date":"2022-02-23T10:27:56","date_gmt":"2022-02-23T10:27:56","guid":{"rendered":"https:\/\/dreid.nl\/?p=2041"},"modified":"2022-02-23T10:58:05","modified_gmt":"2022-02-23T10:58:05","slug":"how-to-read-input-from-a-file-in-a-batch-script","status":"publish","type":"post","link":"https:\/\/dreid.nl\/?p=2041","title":{"rendered":"How to read input from a file in a batch script"},"content":{"rendered":"

Windows batch scripts are incredibly useful for processing data. You can automate many tasks by a simple batch file. The most common thing that I use is a for loop over all files of a certain file name pattern, often extension:<\/p>\n

for %%I in (*.laz) do (
\ndo something with %%I
\n)<\/code>
\nBut there are cases where it is required to not loop over all files, but only the files given in a text file, maybe after you have done something in Excel. Luckily, you can also loop through the lines in a file, and even split columns based on a delimiter and treat the individual columns as different arguments. Below script reads from a comma-separated file and uses the first columns as file name for processing with the LAStools<\/a> command las2las, in this case setting the LAZ version and scaling the intensity.<\/p>\n

mkdir fixed
\n<\/code>for \/F \"tokens=1* delims=,\" %%I in (intensity.csv) do (
\nlas2las -i \"%%I\" -o \"fixed\\%%~nxI\" -set_version 1.2 -scale_intensity 0.0625
\n)<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

Windows batch scripts are incredibly useful for processing data. You can automate many tasks by a simple batch file. The most common thing that I use is a for loop over all files of a certain file name pattern, often extension: for %%I in (*.laz) do ( do something with %%I ) But there are […]<\/p>\n","protected":false},"author":1,"featured_media":2042,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[109],"class_list":{"0":"post-2041","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-blog","8":"tag-batch","9":"czr-hentry"},"yoast_head":"\nHow to read input from a file in a batch script - DreiD BV<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dreid.nl\/?p=2041\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to read input from a file in a batch script - DreiD BV\" \/>\n<meta property=\"og:description\" content=\"Windows batch scripts are incredibly useful for processing data. You can automate many tasks by a simple batch file. The most common thing that I use is a for loop over all files of a certain file name pattern, often extension: for I ) But there are […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dreid.nl\/?p=2041\" \/>\n<meta property=\"og:site_name\" content=\"DreiD BV\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DreiDBV\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-23T10:27:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-02-23T10:58:05+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/dreid.nl\/wp-content\/uploads\/2022\/02\/batch.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"790\" \/>\n\t<meta property=\"og:image:height\" content=\"684\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tobias\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Geschreven door\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tobias\" \/>\n\t<meta name=\"twitter:label2\" content=\"Verwachte leestijd\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/dreid.nl\\\/?p=2041#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dreid.nl\\\/?p=2041\"},\"author\":{\"name\":\"Tobias\",\"@id\":\"https:\\\/\\\/dreid.nl\\\/#\\\/schema\\\/person\\\/724765ca445bdd176b5dfa6f0f432741\"},\"headline\":\"How to read input from a file in a batch script\",\"datePublished\":\"2022-02-23T10:27:56+00:00\",\"dateModified\":\"2022-02-23T10:58:05+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dreid.nl\\\/?p=2041\"},\"wordCount\":144,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/dreid.nl\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/dreid.nl\\\/?p=2041#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dreid.nl\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/batch.jpg\",\"keywords\":[\"Batch\"],\"articleSection\":[\"Blog\"],\"inLanguage\":\"nl-NL\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/dreid.nl\\\/?p=2041#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dreid.nl\\\/?p=2041\",\"url\":\"https:\\\/\\\/dreid.nl\\\/?p=2041\",\"name\":\"How to read input from a file in a batch script - 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