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

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]>
> 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]
>> 
>> 
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-- 
Philip Rhoades

PO Box 896
Cowra  NSW  2794
Australia
E-mail:  [email protected]