Re: REPOST: Display and User units, Scaling, Measuring Paths, Importing PDF

This extension may be useful for the scaling part (but it requires that
you know the length of one element in the drawing):
https://gitlab.com/Moini/inkscape-realscale-extension

Maren

Am 13.12.18 um 19:34 schrieb Chris Tooley:
> Hi Phil
> 
> You should be able to change the size of the page with the document
> properties dialog (Ctrl+Shift+D).
> 
> Once you have resized the page, you might need to resize the imported
> graphic using the transform tool (F1) to match your expectations for mm
> to m.
> 
> -Chris
> 
> On Thu, Dec 13, 2018 at 5:18 AM Philip Rhoades <[email protected]
> <mailto:[email protected]>> wrote:
> 
>     Paul,
> 
> 
>     On 2018-12-13 21:15, PipingDesignCentral wrote:
>     > Have you confirmed that the drawing is in fact to scale? Is it
>     > possible that the drawing is a reduced copy of the original which was
>     > drawn at 1:500?
> 
> 
>     When I use the Visualise->Measure Path Extension it does actually give
>     me correct results so I a assuming that the drawing is still correctly
>     1:500 . .
> 
>     Thanks,
> 
>     Phil.
> 
> 
>     > Paul
>     >
>     > On Thu, Dec 13, 2018 at 2:17 AM Philip Rhoades <[email protected]
>     <mailto:[email protected]>>
>     > wrote:
>     >
>     >> People,
>     >>
>     >> I didn't get an answer to this a year ago and the problem has come
>     >> again
>     >> so I thought I would repost to see if I have any more luck with
>     >> responses this time:
>     >>
>     >> If I produce a new drawing on an A4 page with Display and User units
>     >> in
>     >> mm with a scaling factor of 1.0, I can draw a rectangle of XxY and
>     >> when
>     >> I use the Visualise->Measure Path Extension with a Scale Factor of
>     >> 100
>     >> and Length Unit in m - I get exactly the right dimensions for the
>     >> rectangle for its perimeter length and area - all good!
>     >>
>     >> However, I have imported a surveyor's map from a PDF file into
>     >> Inkscape
>     >> SVG (using defaults) and I need to be able to draw rectangles on it
>     >> as
>     >> above in mm (like my test) that will correspond to m in the real
>     >> world
>     >> but the drawing is on an A3 page and I have tried scaling and
>     >> everything
>     >> else I can think of and Googled a lot but I still can't do what I
>     >> was
>     >> able to do with my little test case.
>     >>
>     >> So:
>     >>
>     >> How can I convert the drawing to be on an A4 page with mm units so
>     >> the
>     >> mm correspond to m in the real world and the Measure Path Extension
>     >> will
>     >> give me the correct result in m and sqm?
>     >>
>     >> The original PDF says the scale was 1:500.
>     >>
>     >> I am using:
>     >>
>     >> Inkscape 0.92.3 (2405546, 2018-03-11)
>     >>
>     >> Thanks,
>     >>
>     >> Phil.
>     >> --
>     >> Philip Rhoades
>     >>
>     >> PO Box 896
>     >> Cowra  NSW  2794
>     >> Australia
>     >> E-mail:  [email protected] <mailto:[email protected]>
>     >>
>     >>
>     >
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> 
>     -- 
>     Philip Rhoades
> 
>     PO Box 896
>     Cowra  NSW  2794
>     Australia
>     E-mail:  [email protected] <mailto:[email protected]>
> 
> 
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