{"id":358533,"date":"2024-03-22T16:05:09","date_gmt":"2024-03-22T16:05:09","guid":{"rendered":"\/forum\/forums\/reply\/358533\/"},"modified":"2024-03-22T16:05:09","modified_gmt":"2024-03-22T16:05:09","slug":"358533","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/","title":{"rendered":"Reply To: Arbitrary sign for eigen mode"},"content":{"rendered":"<p>&lt;p&gt;Yes, I modified, since the minor shifts may cause some issues.&lt;\/p&gt;&lt;p&gt;To check the consistency and isolate the issues, a straight waveguide is preferred. The phase is very sensitive to small values, since it is calculated from angle(imag(S)\/real(S)). if the imag or the real part is small, due to numberical errors, it can flip the sign of the value. Thus the phase can be quite different. This is not uncommon for phase calculation.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-358533","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Yes, I modified, since the minor shifts may cause some issues.To check the consistency and isolate the issues, a straight waveguide is preferred. The phase is very sensitive to small values, since it is calculated from angle(imag(S)\/real(S)). if the imag or the real part is small, due to numberical errors, it can flip the sign\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/\" \/>\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=\"Reply To: Arbitrary sign for eigen mode | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Yes, I modified, since the minor shifts may cause some issues.To check the consistency and isolate the issues, a straight waveguide is preferred. The phase is very sensitive to small values, since it is calculated from angle(imag(S)\/real(S)). if the imag or the real part is small, due to numberical errors, it can flip the sign\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-03-22T16:05:09+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-03-22T16:05:09+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Arbitrary sign for eigen mode | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Yes, I modified, since the minor shifts may cause some issues.To check the consistency and isolate the issues, a straight waveguide is preferred. The phase is very sensitive to small values, since it is calculated from angle(imag(S)\/real(S)). if the imag or the real part is small, due to numberical errors, it can flip the sign\" \/>\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\\\/reply\\\/358533\\\/#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\\\/forums\\\/reply\\\/358533\\\/#listItem\",\"name\":\"Reply To: Arbitrary sign for eigen mode\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/358533\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Arbitrary sign for eigen mode\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@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\\\/reply\\\/358533\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/358533\\\/\",\"name\":\"Reply To: Arbitrary sign for eigen mode | Ansys Learning Forum\",\"description\":\"Yes, I modified, since the minor shifts may cause some issues.To check the consistency and isolate the issues, a straight waveguide is preferred. The phase is very sensitive to small values, since it is calculated from angle(imag(S)\\\/real(S)). if the imag or the real part is small, due to numberical errors, it can flip the sign\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/358533\\\/#breadcrumblist\"},\"datePublished\":\"2024-03-22T16:05:09+00:00\",\"dateModified\":\"2024-03-22T16:05:09+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\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Reply To: Arbitrary sign for eigen mode | Ansys Learning Forum","description":"Yes, I modified, since the minor shifts may cause some issues.To check the consistency and isolate the issues, a straight waveguide is preferred. The phase is very sensitive to small values, since it is calculated from angle(imag(S)\/real(S)). if the imag or the real part is small, due to numberical errors, it can flip the sign","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/#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\/forums\/reply\/358533\/#listItem","name":"Reply To: Arbitrary sign for eigen mode"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/#listItem","position":2,"name":"Reply To: Arbitrary sign for eigen mode","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@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\/reply\/358533\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/358533\/","name":"Reply To: Arbitrary sign for eigen mode | Ansys Learning Forum","description":"Yes, I modified, since the minor shifts may cause some issues.To check the consistency and isolate the issues, a straight waveguide is preferred. 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