Trying to modify an existing linetype, but I don't know how it works

[CoraForun]

Hello,

I have a DWG where we have custom linetypes that won't show in acadiso.lin, or acad.lin. So I found a way to export all Linetypes found in a DWG using a .vlx file (Link here: https://www.cadforum.cz/cadforum_en/qaID.asp?tip=3958 ) then do the command APPLOAD and then LinOut. It gets me a .lin text file where all the linetypes in the dwg are exported.

However, the linetype I'm trying to use looks like this: 

The code in the linetype file looks like this: 

*SANITAIRE,Conduite sanitaire avec fleche
A, 2.1484, -1.6016, -1.5000, 3.7500, -.5000, -1.5000, 3.7500, -1.5000, 3.7500, -1.5000

I want to change the S letter with a D letter. How can I do that? I've looked around to see how to do it, but all the solutions are lot more complex than the code above. I don't understand how I can have this linetype with only these numbers.

Some understanding could be helpful. Thank you.

Sorry for my bad english, I usually speak french.
Thank you

Note: I mainly use Civil 3D.

[Kent1Cooper]

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@CoraForun wrote:
.... the linetype I'm trying to use looks like this: 

The code in the linetype file looks like this: 

*SANITAIRE,Conduite sanitaire avec fleche
A, 2.1484, -1.6016, -1.5000, 3.7500, -.5000, -1.5000, 3.7500, -1.5000, 3.7500, -1.5000

I want to change the S letter with a D letter. How can I do that? .... I don't understand how I can have this linetype with only these numbers.

....

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It's understandable that you don't understand, because you can't  have that linetype with only those numbers.  It's clearly missing the parts about the insertion of the arrowhead and the S.  They should most likely be between the adjacent pairs of negative [pen-up] numbers.

Maybe you need to try a different linetype-definition-extraction program.  If you can't find one that gets it correct, it looks like a fairly simple one to define.  Do you know whether the arrowhead is a defined Shape or a text character in some symbols font?

[CoraForun]

I have absolutly no idea to either of those questions. I'm a beginner with AutoCAD and therefore I know very little about linetypes and or every command and hidden options that the program has to offer.

[Alfred.NESWADBA]

Hi,

if you have a drawing, that has a linetype where you only want to change one letter, then please

• create a new drawing
• from the existing dwg-file copy a line or polyline that has this linetype assigned
• paste that object into the new drawing
• save and upload that new dwg-file so we can take a look into it.

- alfred -