Hi Brandon;<br><br>I've been doing some "reverse engineering," and I keep coming back to the same problem: my FLOOR AND SPACE polygons appear in eQuest exactly where I expect them to, but all of the EXTERIOR-WALL polygons, if no translations are applied (ie X, Y, Z, AZIMUTH, TILT = 0) , appear rotated 180 degrees around the building coordinate X axis relative to where I would expect them to be. Also, oddly, the TILT and AZIMUTH transformations, when specified, take place relative to this rotated coordinate system -- ie, the AZIMUTH rotation is about the buidling coordinate <i>negative </i>z-axis -- while the translation transformation (as specified by X, Y, and Z) take place as expected (in the building coordinate system). <br>
<br>Very strange stuff. I get the feeling that this has something to do with the EXTERIOR-WALL coordinate system being dependant on the SPACE coordinate system which is, in turn, dependant on the FLOOR coordinate system. As it stands, my FLOOR, SPACE, and EXTERIOR WALL object that represents the floor all use the same POLYGON object -- does anyone know if this in itself is a problem? My instinct is that I'm somehow misunderstanding this relationship,
but I've done some fiddling in this regard and haven't been able to change very much... <br><br>Again, if anyone has any insight on this issue, it would be greatly appreciated.<br><br>Thanks a lot,<br><br>Josh<br>
<br><div class="gmail_quote">On Fri, Nov 7, 2008 at 1:47 AM, Brandon Nichols <span dir="ltr"><<a href="mailto:bwnichols@gmail.com">bwnichols@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<p>Suggest reverse engineering...define your objective in eQuest (starting with the lower-leftmost vertex for all polygons) and compare the resulting inp file to yours. Also take a close look at the DOE2.2 documentation, wherein the coordinate system is detailed. <br>
</p><p>Suspected root cause issue is the disconnect going from the eQuest Floor/Zone editor, where all zone (space) coordinates are entered absolute, to the .inp file where the eQuest stores coordinates of space polygons relative to the floor polygon.</p>
<p>Suggest always starting all polygons with the lower-leftmost vertex, to help make sense of the relative coordinates and azimuths. This habit is one you'll be glad to have acquired, should dissecting inp files become your muse.</p>
<p>Regards</p><p>Brandon Nichols<br>BW Nichols PE<br>Seattle WA<br></p><p><br></p><p></p><blockquote><div><div></div><div class="Wj3C7c">On Nov 6, 2008 4:34 PM, "Josh K" <<a href="mailto:jeemang@gmail.com" target="_blank">jeemang@gmail.com</a>> wrote:<br>
<br>Hi all;<br><br>I'm trying to figure out how to manually enter geometry in DOE-2.2 and I'm having a little bit of trouble. My problems are myriad, but they essentially boil down to this: when I enter<br>
<br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">polygon.0 = POLYGON</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> V1 = (0.0,0.0)</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> V2 = (200,0)</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> V3 = (200,300)</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> V4 = (0,300)</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> ..</span><br style="font-family: courier new,monospace;" clear="all">
<br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">floor.0 = FLOOR</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> AZIMUTH = 360</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> POLYGON = polygon.0 </span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> SHAPE = POLYGON</span><span style="font-family: courier new,monospace;"></span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> FLOOR-HEIGHT = 3.28</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> SPACE-HEIGHT = 3.28</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> ..</span><br style="font-family: courier new,monospace;"><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">space.0 = SPACE</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> ZONE-TYPE = UNCONDITIONED</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> POLYGON = polygon.0 </span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> SHAPE = POLYGON</span><span style="font-family: courier new,monospace;"></span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> ..</span><br style="font-family: courier new,monospace;">
<br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">face.0 = EXTERIOR-WALL</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> POLYGON = polygon.0</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> X = 0</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> Y = 0</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> Z = 0.0</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> AZIMUTH = 0.0</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> TILT = 0.0</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> CONSTRUCTION = "EWall Construction"</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> ..</span><br><br>and import it to eQuest (the only good way I can think of to check if I've entered my geometry correctly), the resulting EXTERIOR-WALL surface is not where I expect it to be. I was expecting it to be in "NE" quadrant of the the building's XY plane, but instead it's in the "SW" quadrant, as if it had been rotated 180 degrees about the building coordinate system's z-axis. Puzzlingly, the SPACE and FLOOR objects appear where I would expect them to -- in the building's "NE" quadrant. <br>
<br>Clearly I'm misunderstanding something about how POLYGON objects are to be positioned. If anyone could help me to understand what I've got wrong, I would greatly appreciate it. <br><br>Many thanks,<br><br>Josh<br>
<font color="#888888">
<br><br>-- <br>Josh Kjenner, EIT, LEED AP<br>Manasc Isaac Architects Ltd.<br>10225 100 Avenue :: Edmonton, AB T5J 0A1<br>780.429.3977<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Josh Kjenner, EIT, LEED AP<br>Manasc Isaac Architects Ltd.<br>10225 100 Avenue :: Edmonton, AB T5J 0A1<br>780.429.3977<br>