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<div class="moz-cite-prefix">Il 21/10/2013 11:44, G. Allegri ha
scritto:<br>
</div>
<blockquote
cite="mid:CAB4g1=wM2EviGw8p0q8it2WuV=Nizf5ZV3fZ6b7=wy7jfCH_Rg@mail.gmail.com"
type="cite">
<div dir="ltr">Pardon, mi ero perso :)
<div><br>
</div>
Hai già provato la seguente definizione?
<div>+proj=cass +lat_0=37.267086 +lon_0=14.692592 +x_0=0 +y_0=0
+ellps=bessel
+towgs84=656.5,138.2,506.5,5.187,-2.540,5.256,–12.61 +units=m
+no_defs</div>
</div>
<br>
</blockquote>
<br>
<br>
senti ho letto il pdf che mi hai segnalato<br>
<br>
<a class="moz-txt-link-freetext" href="http://sas2.elte.hu/tg/patrick_it/08_gabor_timar_valerio_baiocchi_keti_lelo_geodetic_datums_of_the_italian_cadastral_systems.pdf">http://sas2.elte.hu/tg/patrick_it/08_gabor_timar_valerio_baiocchi_keti_lelo_geodetic_datums_of_the_italian_cadastral_systems.pdf</a><br>
<br>
è MOLTO INTERESSANTE<br>
<br>
<br>
in particolare :<br>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
149.401px; top: 931.162px; transform: scale(0.999668, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="690.1540900680543">We have to mention, that the
remaining errors (inner distortion of the system) is up to </div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
113.401px; top: 954.082px; transform: scale(0.997676, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="708.1502827625275">20-22 meters in Sicilia,
around 20 meters in Southern Italy and around 4-5 meters at the </div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
113.401px; top: 977.122px; transform: scale(0.997026, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="715.5656683898926">auxiliary origins (Innsbruck
and Krimberg), indicating that the extension of Genova1902 </div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
113.401px; top: 1000.16px; transform: scale(0.997816, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="738.7660625141144">datum beyond its original
survey territory is not precise enough it these regions. That’s
why </div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
113.401px; top: 1023.08px; transform: scale(0.997578, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="726.4692321712496">the quasi-official Italian
coordinate conversion utility CartLab2 does not provide cadastral
</div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
113.401px; top: 1046.12px; transform: scale(0.998076, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="710.6300967720031">transformations to these
territories. Using the original geodetic bases could improve this
</div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif; left:
113.401px; top: 1069.16px; transform: scale(0.99956, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="79.015253988266">situation.<br>
<br>
spiega direi il 70% dei nostri problemi, infatti l'errore indicato
è quello che mi ritorvo se uso come origine mineo<br>
<br>
<div dir="ltr" style="font-size: 20.047px; font-family: serif;
left: 149.401px; top: 839.122px; transform: scale(0.999311, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="705.3136321372987">dX= +656.5 m; dY= +138.2
m; dZ= +506.5 m; rotX= –5.187 arc sec; rotY= +2.540 arc </div>
<div dir="ltr" style="font-size: 20.047px; font-family: serif;
left: 113.401px; top: 862.162px; transform: scale(0.997684, 1);
transform-origin: 0% 0% 0px;" data-font-name="g_font_84_0"
data-canvas-width="212.32380047340394">sec; rotZ= –5.256 arc
sec; </div>
scale factor= –12.61 ppm <br>
<br>
in particolare ho notato che questi 7 parametri che abbiamo usato
sono comunque riferiti a monte mario, ma non capisco come
recuperare analoghi parametri per mineo o meglio ancora per un
fiduciale qualsiasi?<br>
<br>
<br>
sono necessarie misure o possono essere desunti in qualche modo?<br>
<br>
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