{"id":463641,"date":"2026-09-20T07:14:42","date_gmt":"2026-09-20T07:14:42","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/"},"modified":"2026-09-20T07:14:42","modified_gmt":"2026-09-20T07:14:42","slug":"ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/","title":{"rendered":"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)?"},"content":{"rendered":"<p>Hi everyone,<\/p>\n<p>I&rsquo;m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance.<\/p>\n<p><strong>Software:<\/strong><\/p>\n<p>LS-PrePost 4.13.5<\/p>\n<p><strong>Problem:<\/strong><\/p>\n<p>I have an ICFD simulation and I created a StreamLine object (StreamLine_30). I need to export the streamline geometry (point coordinates along each streamline) for&nbsp;<strong>all time states \/ frames<\/strong>, not just the current one.<\/p>\n<p>Preferred output formats:<\/p>\n<ul>\n<li>\n<p>CSV<\/p>\n<\/li>\n<li>\n<p>JSON (or any structured format that I can easily convert for frontend visualization with Three.js)<\/p>\n<\/li>\n<\/ul>\n<p><strong>What I have already tried:<\/strong><\/p>\n<ol>\n<li>\n<p>Recorded a macro (.cfile) while doing: texticfd select 30 icfd update 30 output &#8220;streamline_state1.k&#8221; 34 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1.000000 0 0 The resulting .k file only contains state metadata and no actual node\/point data.<\/p>\n<\/li>\n<li>\n<p>Used&nbsp;<strong>Post &rarr; Output<\/strong>&nbsp;and exported as ASCII STL. This works and gives me geometry, but it converts the streamlines into triangulated surfaces. The file is very large and not ideal for getting clean polyline point data.<\/p>\n<\/li>\n<\/ol>\n<p><strong>What I need:<\/strong><\/p>\n<ul>\n<li>\n<p>A way to loop through all time states and export the actual streamline point coordinates<\/p>\n<\/li>\n<li>\n<p>Preferably clean ordered points (polylines) rather than triangulated mesh<\/p>\n<\/li>\n<li>\n<p>Batch process if possible (command file \/ script)<\/p>\n<\/li>\n<\/ul>\n<p>I&rsquo;m not familiar with LS-PrePost scripting (SCL \/ command files \/ Python interface), so even a basic working example would be extremely helpful.<\/p>\n<p>Has anyone successfully extracted StreamLine geometry over multiple states before? Any recommended workflow or alternative method would be greatly appreciated.<\/p>\n<p>Thank you in advance!<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/09\/streamline-1.png\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/09\/section-vectplot-1.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-463641","topic","type-topic","status-publish","hentry","topic-tag-ls-prepost","topic-tag-prepost"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi everyone, I\u2019m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance. Software: LS-PrePost 4.13.5 Problem: I have an ICFD simulation and I created a StreamLine object (StreamLine_30). I need to export the streamline geometry (point coordinates along each streamline) for all time states \/ frames, not just the current one.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)? | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi everyone, I\u2019m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance. Software: LS-PrePost 4.13.5 Problem: I have an ICFD simulation and I created a StreamLine object (StreamLine_30). I need to export the streamline geometry (point coordinates along each streamline) for all time states \/ frames, not just the current one.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2026-09-20T07:14:42+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-09-20T07:14:42+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)? | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi everyone, I\u2019m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance. Software: LS-PrePost 4.13.5 Problem: I have an ICFD simulation and I created a StreamLine object (StreamLine_30). I need to export the streamline geometry (point coordinates along each streamline) for all time states \/ frames, not just the current one.\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/prepost\\\/#listItem\",\"name\":\"prepost\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/prepost\\\/#listItem\",\"position\":3,\"name\":\"prepost\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/prepost\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\\\/#listItem\",\"name\":\"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\\\/JSON)?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\\\/#listItem\",\"position\":4,\"name\":\"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\\\/JSON)?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/prepost\\\/#listItem\",\"name\":\"prepost\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\\\/\",\"name\":\"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\\\/JSON)? | Ansys Learning Forum\",\"description\":\"Hi everyone, I\\u2019m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance. 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Software: LS-PrePost 4.13.5 Problem: I have an ICFD simulation and I created a StreamLine object (StreamLine_30). I need to export the streamline geometry (point coordinates along each streamline) for all time states \/ frames, not just the current one.","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/forum\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/prepost\/#listItem","name":"prepost"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/prepost\/#listItem","position":3,"name":"prepost","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/prepost\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/#listItem","name":"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/#listItem","position":4,"name":"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/prepost\/#listItem","name":"prepost"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/","name":"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)? | Ansys Learning Forum","description":"Hi everyone, I\u2019m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance. 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I need to export the streamline geometry (point coordinates along each streamline) for all time states \/ frames, not just the current one.","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/#breadcrumblist"},"datePublished":"2026-09-20T07:14:42+00:00","dateModified":"2026-09-20T07:14:42+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)? | Ansys Learning Forum","og:description":"Hi everyone, I\u2019m completely new to LS-PrePost and CFD post-processing, so I would really appreciate some guidance. 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I need to export the streamline geometry (point coordinates along each streamline) for all time states \/ frames, not just the current one."},"aioseo_meta_data":{"post_id":"463641","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2026-09-20 07:17:37","updated":"2026-09-20 07:17:37","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/prepost\/\" title=\"prepost\">prepost<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tLS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"prepost","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/prepost\/"},{"label":"LS-PrePost How to export ICFD StreamLine data for all time states (CSV\/JSON)?","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ls-prepost-how-to-export-icfd-streamline-data-for-all-time-states-csvjson\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27794"],"_bbp_topic_id":["463641"],"_bbp_subscription":["733203"],"_bbp_author_ip":[null],"_bbp_last_reply_id":["0"],"_bbp_last_active_id":["463641"],"_bbp_last_active_time":["2026-09-20 07:14:42"],"_bbp_reply_count":["0"],"_bbp_reply_count_hidden":["0"],"_bbp_engagement":["1"],"_bbp_likes_count":["0"],"_btv_view_count":["19"],"application":[null],"emailnotification":[null],"_bbp_topic_status":["unanswered"]},"test":"ninejoinzhonggmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/463641","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/463641\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=463641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}