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<div class="moz-cite-prefix">Hi John,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">as I understand it, you created the
base map in QGIS. If you use the measure tool in QGIS to get the
distance between two distinct features in the map (e.g. road
intersections) and then measure the same distance on the printed
base map with a ruler, it should be possible to calculate the
scale. Maybe use two distances, one aligned more or less
horizontally and one vertically, to check if the scaling is
proportional.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">As Andreas pointed out, it is probably
a problem with the settings when the PDF was printed. In my
experience it is a good idea to go to print shops usually working
for architects and engineers since they are familiar with the
importance of scaling (for advertising etc. it is more important
that the whole content is printed, so that scaling might be used
to fit the output to the printable area without potential
cropping).</div>
<div class="moz-cite-prefix">You can print directly to a plotter in
QGIS if you have access to the device, avoiding the PDF detour.<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">EPSG 2264 should be fine. Units should
be US feet.<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Regards<br>
Jochen<br>
</div>
<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">Am 27.05.21 um 07:15 schrieb John
Antkowiak:<br>
</div>
<blockquote type="cite"
cite="mid:301502554.636673.1622092502691@mail.yahoo.com">
<div class="yahoo-style-wrap">
<div dir="ltr" data-setdir="false">Hi. This plan was too simple
to fail - but it failed. The charity whose project this is
needed a large (that is... massive) paper wall map on which to
plot and rethink its delivery driver assignments. Both drivers
and delivery addresses are subject to change from week to week
but it's not a pizza delivery; this is a regular run to supply
people in a bad way. So the plan was to print the base map
(roads and road names and county boundaries only) and then
print 8.5 x 11 address maps with parcel data and orthos. That
way, the base maps don't change but the physical parcel layer
is flexible. (On top of that is a third paper layer indicating
which drivers go where so someone can stand back and take in
the whole picture graphically. Not a cutting-edge state of the
digital art solution, but not everyone is cut out for that. It
is what it is.) In order for this to work, the parcel maps
have to be the same scale as the base map. Which they were...
in QGIS.</div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">We have to convert all the
maps to PDF to print them, and we had to send the base map
PDFs to FedEx/Kinkos to print the 9 map grid panels at 42" by
62" each. </div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">When we got the big base maps
up on the wall, we discovered the scale did not match the 8.5"
x 11" parcel maps output to PDF and printed from home. It's
not off by a lot, but it's enough to be painfully obvious from
a single standard size sheet of paper. I don't know how to
reverse engineer the big map scale precisely enough to enter a
new scale number in the QGIS Print Layout. I didn't foresee it
because this never would've been a conceivable scenario at the
engineering firm where I picked up my meager GIS skills.
(ArcMap sent a map directly to the plotter without interim
steps.) There was no scale bar on the map. It shouldn't have
been needed for this.</div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">Did something happen to the
map scale when QGIS output the map to PDF? Could the size of
the image on the pdf page have been adjusted manually or
otherwise when being sent to a plotter with 42" paper? Could
the image have been distorted horizontally differently from
vertically? For the life of me, I cannot trial-and-error guess
at a scale to enter. I've gone through dozens of new 8.5" x
11" test maps trying to guess the correct scale.</div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">Any ideas? </div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">Thank you all -</div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">John A.</div>
</div>
<br>
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