<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>Dear chimeras users and developers,</div><div><br data-mce-bogus="1"></div><div>I would like to translate and rotate a model according to the rotation and translation matrix given by a fitmap. More precisely : I fit model #2 in map #1 and save the corresponding translation and rotation matrix with the save command. Then, I want to turn and move a model #3 so that it has the same position and rotation as model #2 (each correspond to the same pdb file). However, I want to do this automatically, so I need to do it from the matrix that is saved in a .positions file, and not from the (axis, axis point, rotation angle and shift along axis) values given by fitmap, but from the Matrix rotation and translation values. So far,</div><div>- I compute the axis of rotation and the angle from the rotation matrix given by fitmap models #2 inMap #1</div><div>- I turn #3 around this axis and angle, in coordinateSystems #1</div><div>- I apply the translation also measured by <span style="caret-color: #000000; color: #000000; font-family: 'times new roman', 'new york', times, serif; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;" data-mce-style="caret-color: #000000; color: #000000; font-family: 'times new roman', 'new york', times, serif; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;">fitmap models #2 inMap #1 to #3 (with three calls of the move command, for each axis x,y,z)</span><div style="clear: both;" data-mce-style="clear: both;">However, there is a small gap between model #2 and model #3, whereas both should be at the exact same position. </div><span style="caret-color: #000000; color: #000000; font-family: 'times new roman', 'new york', times, serif; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;" data-mce-style="caret-color: #000000; color: #000000; font-family: 'times new roman', 'new york', times, serif; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration: none; display: inline !important; float: none;"></span></div><div><br data-mce-bogus="1"></div><div>Maybe this has to do with the rotation center that is used in fitMap, but it cannot be saved in a .positions file, and I don't know how to recover it from the matrix rotation and translation given by fitmap. Do you have any idea of what I'm doing wrong, or how I could place model #3 at the same exact position as model #2 from the .positions file of model #2, and by moving and rotating model #3 ? (What I want to do then is re-apply this same transformation to build a chain of the same protein)</div><div>Thanks,</div><div>Lar</div><div data-marker="__SIG_PRE__"><table cellpadding="2px" style="background-color:#ffffff;min-width:500px"><tbody><tr><td style="width:280px;vertical-align:top"><img alt="UPSACLAY-2020" src="https://zutil.di.u-psud.fr/signature/templates/Paris-Saclay/UPSACLAY-2020.png" style="width:181px"></td><td style="width:auto" valign="top"><span style="font-size:9pt"><span style="color:rgb( 99 , 0 , 60 );font-weight:bold;font-size:12pt">Lara KOEHLER</span><br>Laboratoire de Physique Théorique et Modèles Statistiques<br><br>Bureau L123 - Bâtiment 530 - Rue André Rivière<br>91400 Orsay<br><a href="http://www.universite-paris-saclay.fr" style="font-size:9pt;color:#005a95;text-decoration:none" target="_blank" rel="nofollow noopener noreferrer">www.universite-paris-saclay.fr</a></span></td></tr></tbody></table></div></div></body></html>