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    <title>tema Re: How to center letters/symbols in a polyline with linetype en AutoCAD Forum</title>
    <link>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13148116#M1141953</link>
    <description>&lt;BLOCKQUOTE&gt;&lt;HR /&gt;&lt;a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/239200"&gt;@vladimir_michl&lt;/a&gt;&amp;nbsp;wrote:&lt;BR /&gt;
&lt;P&gt;.... If the initial and final segment of the definition is the same, the line will behave symmetrically. ....&lt;/P&gt;
&lt;HR /&gt;&lt;/BLOCKQUOTE&gt;
&lt;P&gt;That's not the way it works.&amp;nbsp; From Help [2025, but no different in earlier versions]:&lt;/P&gt;
&lt;P&gt;&lt;EM&gt;&lt;FONT face="arial,helvetica,sans-serif"&gt;The program adjusts the dash-dot sequence on an individual line so that dashes and line endpoints coincide. The pattern fits the line so that &lt;STRONG&gt;at least half of the first dash begins and ends the line&lt;/STRONG&gt;. If necessary, the first and last dashes are lengthened.&lt;/FONT&gt;&lt;/EM&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;SPAN&gt;To illustrate:&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Kent1Cooper_0-1731504572940.png" style="width: 600px;"&gt;&lt;img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1433363i1C01FBFFD9B771CC/image-size/medium?v=v2&amp;amp;px=400" role="button" title="Kent1Cooper_0-1731504572940.png" alt="Kent1Cooper_0-1731504572940.png" /&gt;&lt;/span&gt;&lt;/P&gt;
&lt;P&gt;The upper group use AutoCAD's HIDDEN definition, which specifies &lt;STRONG&gt;&lt;EM&gt;only a dash and a gap&lt;/EM&gt;&lt;/STRONG&gt;.&amp;nbsp; But the results have symmetrical start-end dash lengths.&lt;/P&gt;
&lt;P&gt;For the lower group, I made the HIDDEN3 definition with a dash at the beginning &lt;EM&gt;and at the end&lt;/EM&gt;, i.e. "initial and final segment of the definition is the same."&amp;nbsp; The result is &lt;EM&gt;asymmetrical&lt;/EM&gt;, because it splits the starting pen-down and puts half of it at each end.&amp;nbsp; The Lines are drawn from left to right, and the extra half tacked onto the final dash in the definition extends the right [ending] dash lengths to longer than the left [starting] ones.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Linetypes like those in&amp;nbsp;&lt;a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/12958127"&gt;@MMStaake&lt;/a&gt;'s image should be defined &lt;STRONG&gt;&lt;FONT color="#0000FF"&gt;starting with a dash&lt;/FONT&gt;&lt;/STRONG&gt; and &lt;STRONG&gt;&lt;FONT color="#FF0000"&gt;ending with the gap&lt;/FONT&gt;&lt;/STRONG&gt; concluding the space around the text or shape inclusion.&amp;nbsp; See, for example, this one of AutoCAD's, which does that:&lt;/P&gt;
&lt;P&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;*HOT_WATER_SUPPLY,Hot water supply ---- HW ---- HW ----&lt;/STRONG&gt;&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;A,&lt;FONT size="4" color="#0000FF"&gt;.5&lt;/FONT&gt;,-.2,["HW",STANDARD,S=.1,U=0.0,X=-0.1,Y=-.05],&lt;FONT size="4" color="#FF0000"&gt;-.2&lt;/FONT&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;AutoCAD even made the same mistake themselves in some linetype definitions.&amp;nbsp; TRACKS has a &lt;STRONG&gt;&lt;FONT color="#0000FF"&gt;pen-down&lt;/FONT&gt;&lt;/STRONG&gt; entry &lt;EM&gt;at both ends:&lt;/EM&gt;&lt;/P&gt;
&lt;P&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;*TRACKS,Tracks -|-|-|-|-|-|-&lt;/STRONG&gt;&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;A,&lt;FONT size="4" color="#0000FF"&gt;.15&lt;/FONT&gt;,[TRACK1,ltypeshp.shx,s=.25],&lt;FONT size="4"&gt;&lt;FONT color="#0000FF"&gt;.15&lt;/FONT&gt;&lt;/FONT&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;and sure enough, the result is asymmetrical:&lt;/P&gt;
&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Kent1Cooper_1-1731505517237.png" style="width: 600px;"&gt;&lt;img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1433371i08F52BE2D70D7F5C/image-size/medium?v=v2&amp;amp;px=400" role="button" title="Kent1Cooper_1-1731505517237.png" alt="Kent1Cooper_1-1731505517237.png" /&gt;&lt;/span&gt;&lt;/P&gt;</description>
    <pubDate>Wed, 13 Nov 2024 13:55:03 GMT</pubDate>
    <dc:creator>Kent1Cooper</dc:creator>
    <dc:date>2024-11-13T13:55:03Z</dc:date>
    <item>
      <title>How to center letters/symbols in a polyline with linetype</title>
      <link>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13147018#M1141930</link>
      <description>&lt;P&gt;I've created a few different linetypes and some of them are centered and some aren't. Does anyone know how to fix this? Image attached.&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Tue, 12 Nov 2024 23:53:48 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13147018#M1141930</guid>
      <dc:creator>MMStaake</dc:creator>
      <dc:date>2024-11-12T23:53:48Z</dc:date>
    </item>
    <item>
      <title>Re: How to center letters/symbols in a polyline with linetype</title>
      <link>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13147424#M1141934</link>
      <description>&lt;P&gt;There is no "symmetry" property, it all depends on the linetype definition. If the initial and final segment of the definition is the same, the line will behave symmetrically. For polylines, the linetype generation property will influence the style displayed at vertices.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Vladimir Michl, &lt;A href="http://www.arkance.world" target="_blank"&gt;www.arkance.world&lt;/A&gt;&amp;nbsp; -&amp;nbsp; &lt;A href="http://www.cadforum.cz" target="_blank"&gt;www.cadforum.cz&lt;/A&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Wed, 13 Nov 2024 06:51:57 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13147424#M1141934</guid>
      <dc:creator>vladimir_michl</dc:creator>
      <dc:date>2024-11-13T06:51:57Z</dc:date>
    </item>
    <item>
      <title>Re: How to center letters/symbols in a polyline with linetype</title>
      <link>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13147569#M1141937</link>
      <description>&lt;P&gt;The line types are defined in the file acad.lin / acadiso.lin. You can modify the files with Notepad. See&amp;nbsp;&lt;A href="https://help.autodesk.com/view/OARX/2024/ENU/?guid=GUID-AF0613E6-5C8B-47F0-800C-8B2524BF2015" target="_blank"&gt;AutoCAD 2024 Developer and ObjectARX Help | About Shapes in Custom Linetypes | Autodesk&lt;/A&gt;&lt;/P&gt;&lt;P&gt;Oh, and don't forget the &lt;STRONG&gt;Linetypescale&lt;/STRONG&gt;.&lt;/P&gt;</description>
      <pubDate>Wed, 13 Nov 2024 08:28:04 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13147569#M1141937</guid>
      <dc:creator>Simon_Weel</dc:creator>
      <dc:date>2024-11-13T08:28:04Z</dc:date>
    </item>
    <item>
      <title>Re: How to center letters/symbols in a polyline with linetype</title>
      <link>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13148116#M1141953</link>
      <description>&lt;BLOCKQUOTE&gt;&lt;HR /&gt;&lt;a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/239200"&gt;@vladimir_michl&lt;/a&gt;&amp;nbsp;wrote:&lt;BR /&gt;
&lt;P&gt;.... If the initial and final segment of the definition is the same, the line will behave symmetrically. ....&lt;/P&gt;
&lt;HR /&gt;&lt;/BLOCKQUOTE&gt;
&lt;P&gt;That's not the way it works.&amp;nbsp; From Help [2025, but no different in earlier versions]:&lt;/P&gt;
&lt;P&gt;&lt;EM&gt;&lt;FONT face="arial,helvetica,sans-serif"&gt;The program adjusts the dash-dot sequence on an individual line so that dashes and line endpoints coincide. The pattern fits the line so that &lt;STRONG&gt;at least half of the first dash begins and ends the line&lt;/STRONG&gt;. If necessary, the first and last dashes are lengthened.&lt;/FONT&gt;&lt;/EM&gt;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;SPAN&gt;To illustrate:&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Kent1Cooper_0-1731504572940.png" style="width: 600px;"&gt;&lt;img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1433363i1C01FBFFD9B771CC/image-size/medium?v=v2&amp;amp;px=400" role="button" title="Kent1Cooper_0-1731504572940.png" alt="Kent1Cooper_0-1731504572940.png" /&gt;&lt;/span&gt;&lt;/P&gt;
&lt;P&gt;The upper group use AutoCAD's HIDDEN definition, which specifies &lt;STRONG&gt;&lt;EM&gt;only a dash and a gap&lt;/EM&gt;&lt;/STRONG&gt;.&amp;nbsp; But the results have symmetrical start-end dash lengths.&lt;/P&gt;
&lt;P&gt;For the lower group, I made the HIDDEN3 definition with a dash at the beginning &lt;EM&gt;and at the end&lt;/EM&gt;, i.e. "initial and final segment of the definition is the same."&amp;nbsp; The result is &lt;EM&gt;asymmetrical&lt;/EM&gt;, because it splits the starting pen-down and puts half of it at each end.&amp;nbsp; The Lines are drawn from left to right, and the extra half tacked onto the final dash in the definition extends the right [ending] dash lengths to longer than the left [starting] ones.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Linetypes like those in&amp;nbsp;&lt;a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/12958127"&gt;@MMStaake&lt;/a&gt;'s image should be defined &lt;STRONG&gt;&lt;FONT color="#0000FF"&gt;starting with a dash&lt;/FONT&gt;&lt;/STRONG&gt; and &lt;STRONG&gt;&lt;FONT color="#FF0000"&gt;ending with the gap&lt;/FONT&gt;&lt;/STRONG&gt; concluding the space around the text or shape inclusion.&amp;nbsp; See, for example, this one of AutoCAD's, which does that:&lt;/P&gt;
&lt;P&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;*HOT_WATER_SUPPLY,Hot water supply ---- HW ---- HW ----&lt;/STRONG&gt;&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;A,&lt;FONT size="4" color="#0000FF"&gt;.5&lt;/FONT&gt;,-.2,["HW",STANDARD,S=.1,U=0.0,X=-0.1,Y=-.05],&lt;FONT size="4" color="#FF0000"&gt;-.2&lt;/FONT&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;AutoCAD even made the same mistake themselves in some linetype definitions.&amp;nbsp; TRACKS has a &lt;STRONG&gt;&lt;FONT color="#0000FF"&gt;pen-down&lt;/FONT&gt;&lt;/STRONG&gt; entry &lt;EM&gt;at both ends:&lt;/EM&gt;&lt;/P&gt;
&lt;P&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;*TRACKS,Tracks -|-|-|-|-|-|-&lt;/STRONG&gt;&lt;/FONT&gt;&lt;BR /&gt;&lt;FONT face="courier new,courier"&gt;&lt;STRONG&gt;A,&lt;FONT size="4" color="#0000FF"&gt;.15&lt;/FONT&gt;,[TRACK1,ltypeshp.shx,s=.25],&lt;FONT size="4"&gt;&lt;FONT color="#0000FF"&gt;.15&lt;/FONT&gt;&lt;/FONT&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;and sure enough, the result is asymmetrical:&lt;/P&gt;
&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Kent1Cooper_1-1731505517237.png" style="width: 600px;"&gt;&lt;img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1433371i08F52BE2D70D7F5C/image-size/medium?v=v2&amp;amp;px=400" role="button" title="Kent1Cooper_1-1731505517237.png" alt="Kent1Cooper_1-1731505517237.png" /&gt;&lt;/span&gt;&lt;/P&gt;</description>
      <pubDate>Wed, 13 Nov 2024 13:55:03 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/autocad-forum/how-to-center-letters-symbols-in-a-polyline-with-linetype/m-p/13148116#M1141953</guid>
      <dc:creator>Kent1Cooper</dc:creator>
      <dc:date>2024-11-13T13:55:03Z</dc:date>
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