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<div class="moz-cite-prefix">Thanks Nikita.<br>
<br>
<span id="result_box" class="short_text" lang="en"><span class="">First,
I thought about doing it as you say. </span></span><span
id="result_box" class="short_text" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class="">But I want
an image that only has the survey and the rest is
transparent, so putting the grid complicates my work. <br>
</span></span></span></span><br>
<span id="result_box" class="short_text" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class="">Then I
discovered that the "calibrate bitmap" option does all
the work. But it's not working. <br>
We don't need the grid</span></span></span></span></span></span><span
id="result_box" class="short_text" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class=""><span
id="result_box" class="short_text" lang="en"><span
class=""> because</span></span> the </span></span></span></span></span></span><span
id="result_box" class="short_text" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class=""><span
id="result_box" class="" lang="en"><span class=""><span
id="result_box" class="short_text" lang="en"><span
class=""><span id="result_box" class="" lang="en"><span
class=""><span id="result_box" class=""
lang="en"><span class="">exported</span></span></span></span></span></span>
Therion PDF have a comment with nine coordinates
(thCalibrate) . A Xtherion tcl command (mapcal.tcl)
do the calculation from the pdf coordinates to the
bitmap coordinates. I am now doing inverse engineering
with this file to understand the equations, to do the
calculation manually. <br>
<br>
Regards,<br>
<br>
Evaristo. <br>
</span></span><br>
<br>
</span></span></span></span>El 26/03/2018 a las 11:32,
Nikita Kozlov via Therion escribió:<br>
</div>
<blockquote type="cite"
cite="mid:CAEEzkZHnj4z3K-z=4Wh2S-dWrCnujB7RHbU+2_ReFxi8SNW67g@mail.gmail.com">
<div dir="ltr">
<div class="gmail_extra">For possible work-around you can export
map with grid lines, and use grid lines intersection points as
GCP (ground control points) with known coordinates to manually
georeference your raster PNG.</div>
</div>
<br>
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