[Qgis-user] Scale on printed pdf is incorrect

[Ian Turton]

This is the reason I always recommend to people to use a scale bar rather
than a specific numeric scale, you are safe no matter what the printer (or
people) do to your masterpiece.

Ian

On Mon, 15 Oct 2018 at 15:55, Andreas Neumann <a.neumann at carto.net> wrote:

> Hi Flore,
>
> Are you absolutely sure that the printer is not scaling during the
> printing? Many printers "autoscale" and shrink the content, because they
> think that there is content right to the edge (even if it is just
> white-space). In such case, you can often force the printer to turn off
> auto-scaling through some printer setting (e.g. print at 100%).
>
> Another source of confusion regarding printing at scale is the coordinate
> system. What coordinate system is your data in and what coordinate system
> are you using in your project? Anything lat/lon should be converted into a
> projected coordinate system, before trying to print at scale.
>
> If you double checked that and can confirm that it is not the fault of
> some printer setting, than you should file an issue report at
> https://issues.qgis.org/ and we can find a developer to look at the
> issue. Best, if you could provide a sample data and project to reproduce
> the issue.
>
> Greetings,
>
> Andreas
>
>
> On 2018-10-15 16:36, Flore Cotton wrote:
>
> Hi,
>
> I have a problem with printing a map on the right scale (Qgis2.18.24).
>
> If I put the map in the print composer on an A4 format, I change the scale
> (for example 1000), and I print the pdf, it is printed on the right scale.
> (I recalculated it, by measuring a specific distance in qgis and then on
> the pdf).
>
> Now, our map is very detailled and we need those details in good quality.
> So we need to print the map on format A0, to have the best quality. If I do
> the same as before (change scale, print on pdf), the scale isn't right on
> the pdf. Instead of scale 1/1000, I get some scale in my recalculation.
>
> Do you know what the problem is, or what did I do wrong?
>
> Thank you,
>
> Flore
>
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-- 
Ian Turton
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