Re: [MORPHMET] Procrustes ANOVA for FA Analysis
Hi Kate, If I understood correctly, I am not sure that you can do a Procrustes ANOVA-based FA test on a list of individuals where only few of them have been digitized a second time. If this is the case, then I would suggest this approach (might be other ones using what you already have but this is fast and works for me): - have a separate landmark file that contains only the specimens you repeated (5 landmarks sets + 5 repeatded landmark sets = 10 landmark sets), whose names end on "-rep1" and "-rep2" or something alike but with the same amount of characters. - create a classifier (eg "repeat) using the last characters of the name (in my example, first character would be -5 and the last, -1). Remember you have to create an "individual" classifier that covers all the remainig characters. - run the procrustes ANOVA on this 10-individuals landmark set using as error term the "repeat" classifier. This way you will be able to quantify variation due to repeated landmarking against variation due to individual*side. I hope this helps, Viviana 2017-01-30 20:56 GMT+01:00 Kate Rusk : > Hello everyone, > > I am a bit confused about how to properly import and classify data for a > Procrustes ANOVA in MorphoJ. Here is some more information about my data: > > 15 3D landmarks on human faces (object symmetry) > 479 individuals > 15 landmarks from 5 individuals digitized a second time > Sex and age as additional main effects > > I realize I need to include a classifier that indicates a repeat (to be > added as an Error classifier), but I am unsure how to import these data. So > far, I have imported 1) the original data text file which includes the > identifier and the XYZ coordinates for the original 15 landmarks and 2) a > classifier text file which includes sex and age as covariates. I have > separate XYZ coordinates for the repeat landmarks, but I don't know how > these should be imported to implement the "repeat" classifier. > > Any assistance you could provide would be greatly appreciated! > > Thanks very much, > Kate > > -- > MORPHMET may be accessed via its webpage at http://www.morphometrics.org > --- > You received this message because you are subscribed to the Google Groups > "MORPHMET" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to morphmet+unsubscr...@morphometrics.org. > -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas Facultad de Odontología Universidad de Chile Dirección: Sergio Livingstone Pohlhammer 943 *(address)* Independencia, Región Metropolitana Chile Email:mtoroibaca...@odontologia.uchile.cl Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ www.cienciaymemoria.cl/staff.html -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
Re: [MORPHMET] Re: How to export .obj with textures as .ply with colours for morphometric analyses?
Dear Patrick, I apologise for the late reply. The software I used to do the procedure is Geomagic Studio, version 2012, 64-bits. Best wishes, Viviana 2016-09-19 5:19 GMT-03:00 lv xiao : > Hi Dr. Viviana, thank you very much for your exposition. I noted that > there are several softwares in Geomagic, such as Geomagic Design, Geomagic > Freeform, and Geomagic Wrap. May I know which Geomagic software did you > use? Thank you very much! > > Best regards, > Patrick WEN > > On Wednesday, 14 September 2016 18:11:12 UTC+8, mtoroibacache wrote: >> >> Dear Colleagues, >> >> I really appreciate your help with this. Indeed, there is a bit of >> everything you mentioned in both the problem and the solution. I will try >> to summarise it in case it can help someone else: >> >> - File names: Indeed I had problems in the past with .obj files whose >> names had spaces, as Thomas mentioned. This was not the case though (I >> learned my lesson), but it could happen to someone else. >> >> - Lack of software to do this in a very reliable way: as Bill mentioned, >> there might be issues with accuracy by transforming an .obj with texture to >> a coloured .ply. I will explore the use of Blender directly in .obj files >> for landmark placing. I am not too worried about my data as the landmark >> configuration corresponds to human faces (the texture will guide me in >> placing landmarks in some curved places), where in my experience geometry >> dimensions exceed small inaccuracies. But it is definitely something to >> bear in mind. Of course, I shall run tests to assess the effect of >> measurement error on my data. >> >> - The .obj texture files: a big problem seemed to be that the original >> data had three .jpg files depicting texture. As Pablo mentioned, the >> "standard" texture should be one file. So... >> >> - ... Geomagic comes to rescue (maybe Blender does this too?): Anneke >> suggested to use Geomagic, which indeed helps a lot. Antonio took my files >> and helped me to generate in Geomagic the single-.png-file texture, which >> can then be used to produce coloured .ply and .wrl files in Meshlab that >> can be opened in Avizo (.wrl, for which an extra step in Geomagic is >> needed), and in the R packages Geomorph and Morpho for landmark placing. >> >> About Joes's comment, I do not believe .stl can hold colours, but I do >> not have too much experience with the .stl format. The .obj format (as well >> as .ply) has a relatively simple structure that describes the position in >> space of faces and vertices plus other stuff and can be created "by hand" >> using a text editor such as Notepad (I am sure you might have checked this >> but just in case https://en.wikipedia.org/wiki/Wavefront_.obj_file). I >> have written .ply files in the past that worked very well for doing >> morphometric analyses in R. >> >> So, again thanks everyone for all the help! >> >> Best wishes, >> Viviana >> >> >> 2016-09-07 21:35 GMT+02:00 pablo.diaz.jarufe : >> >>> Hello Viviana >>> Working with DAVID I noticed that the textures of the OBJ files. are >>> saved in PNG format, not in JPG; and all the views are in the same >>> file. There is any way to create this kind of PNG. file with your >>> pictures?. May be this correction could work fine in meshlab. >>> I hope this information will be useful >>> Best >>> >>> >>> El jueves, 1 de septiembre de 2016, 8:31:47 (UTC-3), mtoroibacache >>> escribió: Deal Morphometricians, I have .obj files with textures from three .jpg photos. I can load and see the textures very nicely in Meshlab, but I need the textures to be transformed into a coloured .ply file to do geometric morphometric analyses (the landmarks are represented in the textures). So far it has not worked doing it from Meshlab, so my questions are: - I know I can place landmarks in Meshlab using the .obj file, but when I do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is there a limit to files size in Meshlab? I would rather not to downsample the mesh to not lose anatomical details. - When using the Transfer Texture to Vertex Color function, the texture gets messed. It seems from web forums that Mshlab takes only one of the (in this case) three .jpg files to do the colouring of the .ply mesh. Does anybody know how to fix this? Another freeware software? - Is there any landmark acquisition software that loads .obj files with textures? So far, I have not been able to do it in Landmark Editor, Evan toolbox, Avizo, Morpho nor Geomorph. Any help is greatly appreciated. Best (y saludos), Viviana -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas Facultad de Odontología Universidad de
Re: [MORPHMET] Re: How to export .obj with textures as .ply with colours for morphometric analyses?
Dear Colleagues, I really appreciate your help with this. Indeed, there is a bit of everything you mentioned in both the problem and the solution. I will try to summarise it in case it can help someone else: - File names: Indeed I had problems in the past with .obj files whose names had spaces, as Thomas mentioned. This was not the case though (I learned my lesson), but it could happen to someone else. - Lack of software to do this in a very reliable way: as Bill mentioned, there might be issues with accuracy by transforming an .obj with texture to a coloured .ply. I will explore the use of Blender directly in .obj files for landmark placing. I am not too worried about my data as the landmark configuration corresponds to human faces (the texture will guide me in placing landmarks in some curved places), where in my experience geometry dimensions exceed small inaccuracies. But it is definitely something to bear in mind. Of course, I shall run tests to assess the effect of measurement error on my data. - The .obj texture files: a big problem seemed to be that the original data had three .jpg files depicting texture. As Pablo mentioned, the "standard" texture should be one file. So... - ... Geomagic comes to rescue (maybe Blender does this too?): Anneke suggested to use Geomagic, which indeed helps a lot. Antonio took my files and helped me to generate in Geomagic the single-.png-file texture, which can then be used to produce coloured .ply and .wrl files in Meshlab that can be opened in Avizo (.wrl, for which an extra step in Geomagic is needed), and in the R packages Geomorph and Morpho for landmark placing. About Joes's comment, I do not believe .stl can hold colours, but I do not have too much experience with the .stl format. The .obj format (as well as .ply) has a relatively simple structure that describes the position in space of faces and vertices plus other stuff and can be created "by hand" using a text editor such as Notepad (I am sure you might have checked this but just in case https://en.wikipedia.org/wiki/Wavefront_.obj_file). I have written .ply files in the past that worked very well for doing morphometric analyses in R. So, again thanks everyone for all the help! Best wishes, Viviana 2016-09-07 21:35 GMT+02:00 pablo.diaz.jarufe : > Hello Viviana > Working with DAVID I noticed that the textures of the OBJ files. are > saved in PNG format, not in JPG; and all the views are in the same file. > There is any way to create this kind of PNG. file with your pictures?. May > be this correction could work fine in meshlab. > I hope this information will be useful > Best > > > El jueves, 1 de septiembre de 2016, 8:31:47 (UTC-3), mtoroibacache > escribió: >> >> Deal Morphometricians, >> >> I have .obj files with textures from three .jpg photos. I can load and >> see the textures very nicely in Meshlab, but I need the textures to be >> transformed into a coloured .ply file to do geometric morphometric analyses >> (the landmarks are represented in the textures). So far it has not worked >> doing it from Meshlab, so my questions are: >> >> - I know I can place landmarks in Meshlab using the .obj file, but when I >> do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is >> there a limit to files size in Meshlab? I would rather not to downsample >> the mesh to not lose anatomical details. >> >> - When using the Transfer Texture to Vertex Color function, the texture >> gets messed. It seems from web forums that Mshlab takes only one of the (in >> this case) three .jpg files to do the colouring of the .ply mesh. Does >> anybody know how to fix this? Another freeware software? >> >> - Is there any landmark acquisition software that loads .obj files with >> textures? So far, I have not been able to do it in Landmark Editor, Evan >> toolbox, Avizo, Morpho nor Geomorph. >> >> Any help is greatly appreciated. >> >> Best (y saludos), >> Viviana >> >> >> >> -- >> >> *Viviana Toro-Ibacache DDS MSc PhD* >> Profesora Asistente *(Assistant Professor)* >> Centro de Análisis Cuantitativo en Antropología Dental (CA2) >> Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas >> Facultad de Odontología Universidad de Chile >> >> Dirección: Sergio Livingstone Pohlhammer 943 >> *(address)* Independencia, Región Metropolitana >> Chile >> Email:mtoroi...@odontologia.uchile.cl >> Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ >> www.cienciaymemoria.cl/staff.html >> > -- > MORPHMET may be accessed via its webpage at http://www.morphometrics.org > --- > You received this message because you are subscribed to the Google Groups > "MORPHMET" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to morphmet+unsubscr...@morphometrics.org. > -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad
Re: [MORPHMET] How to export .obj with textures as .ply with colours for morphometric analyses?
Dear Anneke, Geomagic seems to read the three files and saves them to generate a .wrl (not .ply) file that has indeed colours, although they are not in the right place. But that is a good start. I assume there is a Geomagic setting to generate the file I am missing so I will keep on trying. Luckily in the lab I currently am there is Geomagic... a freware option for everyone would always be great! Thanks and best wishes, Viviana 2016-09-07 16:39 GMT+02:00 Anneke van Heteren : > Dear Viviana, > > Have you tried geomagic? It has been a while since I last used this > program so I forgot the details, but it is capable of importing obj files > with textures and then exporting coloured ply files. Like I said, I forgot > the exact steps you would have to take, but I have done it before, so it is > certainly possible. > I hope that somewhat helps you. > > Best wishes, > > Anneke van Heteren > On Sep 2, 2016 2:54 PM, "Antonio Profico" > wrote: > > Dear Viviana, > > you can export the 3D model from MeshLab as wrl format (export mesh as). > After, you can open and display the new mesh in Avizo (Display Open > Inventor Scene). In this way you can acquire the landmark in Avizo. > > Best, > Antonio > > > 2016-09-01 13:31 GMT+02:00 M. Viviana Toro Ibacache < > mtoroibaca...@odontologia.uchile.cl>: > >> Deal Morphometricians, >> >> I have .obj files with textures from three .jpg photos. I can load and >> see the textures very nicely in Meshlab, but I need the textures to be >> transformed into a coloured .ply file to do geometric morphometric analyses >> (the landmarks are represented in the textures). So far it has not worked >> doing it from Meshlab, so my questions are: >> >> - I know I can place landmarks in Meshlab using the .obj file, but when I >> do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is >> there a limit to files size in Meshlab? I would rather not to downsample >> the mesh to not lose anatomical details. >> >> - When using the Transfer Texture to Vertex Color function, the texture >> gets messed. It seems from web forums that Mshlab takes only one of the (in >> this case) three .jpg files to do the colouring of the .ply mesh. Does >> anybody know how to fix this? Another freeware software? >> >> - Is there any landmark acquisition software that loads .obj files with >> textures? So far, I have not been able to do it in Landmark Editor, Evan >> toolbox, Avizo, Morpho nor Geomorph. >> >> Any help is greatly appreciated. >> >> Best (y saludos), >> Viviana >> >> >> >> -- >> >> *Viviana Toro-Ibacache DDS MSc PhD* >> Profesora Asistente *(Assistant Professor)* >> Centro de Análisis Cuantitativo en Antropología Dental (CA2) >> Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas >> Facultad de Odontología Universidad de Chile >> >> Dirección: Sergio Livingstone Pohlhammer 943 >> *(address)* Independencia, Región Metropolitana >> Chile >> Email:mtoroibaca...@odontologia.uchile.cl >> Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ >> www.cienciaymemoria.cl/staff.html >> >> -- >> MORPHMET may be accessed via its webpage at http://www.morphometrics.org >> --- >> You received this message because you are subscribed to the Google Groups >> "MORPHMET" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to morphmet+unsubscr...@morphometrics.org. >> > > > > -- > __ > > Antonio Profico > PhD > Department of Environmental Biology – Dipartimento di Biologia Ambientale > SAPIENZA Università di Roma > > Lab. 06 4991 2690 > Mob. 3293440766 > > -- > MORPHMET may be accessed via its webpage at http://www.morphometrics.org > --- > You received this message because you are subscribed to the Google Groups > "MORPHMET" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to morphmet+unsubscr...@morphometrics.org. > > -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas Facultad de Odontología Universidad de Chile Dirección: Sergio Livingstone Pohlhammer 943 *(address)* Independencia, Región Metropolitana Chile Email:mtoroibaca...@odontologia.uchile.cl Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ www.cienciaymemoria.cl/staff.html -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
Re: [MORPHMET] How to export .obj with textures as .ply with colours for morphometric analyses?
Dear Antonio, I tried that after your email, but I hit the same rock: Meshlab creates the .wrl file using only one of the .jpg files representing texture (there is no way I have found to select the three of them). I have no correct allocation of the texture over the surface. Thanks for your suggestion, Viviana 2016-09-02 14:54 GMT+02:00 Antonio Profico : > Dear Viviana, > > you can export the 3D model from MeshLab as wrl format (export mesh as). > After, you can open and display the new mesh in Avizo (Display Open > Inventor Scene). In this way you can acquire the landmark in Avizo. > > Best, > Antonio > > > 2016-09-01 13:31 GMT+02:00 M. Viviana Toro Ibacache < > mtoroibaca...@odontologia.uchile.cl>: > >> Deal Morphometricians, >> >> I have .obj files with textures from three .jpg photos. I can load and >> see the textures very nicely in Meshlab, but I need the textures to be >> transformed into a coloured .ply file to do geometric morphometric analyses >> (the landmarks are represented in the textures). So far it has not worked >> doing it from Meshlab, so my questions are: >> >> - I know I can place landmarks in Meshlab using the .obj file, but when I >> do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is >> there a limit to files size in Meshlab? I would rather not to downsample >> the mesh to not lose anatomical details. >> >> - When using the Transfer Texture to Vertex Color function, the texture >> gets messed. It seems from web forums that Mshlab takes only one of the (in >> this case) three .jpg files to do the colouring of the .ply mesh. Does >> anybody know how to fix this? Another freeware software? >> >> - Is there any landmark acquisition software that loads .obj files with >> textures? So far, I have not been able to do it in Landmark Editor, Evan >> toolbox, Avizo, Morpho nor Geomorph. >> >> Any help is greatly appreciated. >> >> Best (y saludos), >> Viviana >> >> >> >> -- >> >> *Viviana Toro-Ibacache DDS MSc PhD* >> Profesora Asistente *(Assistant Professor)* >> Centro de Análisis Cuantitativo en Antropología Dental (CA2) >> Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas >> Facultad de Odontología Universidad de Chile >> >> Dirección: Sergio Livingstone Pohlhammer 943 >> *(address)* Independencia, Región Metropolitana >> Chile >> Email:mtoroibaca...@odontologia.uchile.cl >> Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ >> www.cienciaymemoria.cl/staff.html >> >> -- >> MORPHMET may be accessed via its webpage at http://www.morphometrics.org >> --- >> You received this message because you are subscribed to the Google Groups >> "MORPHMET" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to morphmet+unsubscr...@morphometrics.org. >> > > > > -- > __ > > Antonio Profico > PhD > Department of Environmental Biology – Dipartimento di Biologia Ambientale > SAPIENZA Università di Roma > > Lab. 06 4991 2690 > Mob. 3293440766 > -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas Facultad de Odontología Universidad de Chile Dirección: Sergio Livingstone Pohlhammer 943 *(address)* Independencia, Región Metropolitana Chile Email:mtoroibaca...@odontologia.uchile.cl Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ www.cienciaymemoria.cl/staff.html -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
Re: [MORPHMET] How to export .obj with textures as .ply with colours for morphometric analyses?
Dear Bill, Thanks for your comment. I can now have these considerations for this type of data (as opposed to think that there was some mesh-exporting method I was missing). Best wishes, Viviana 2016-09-02 14:20 GMT+02:00 Bill Sellers : > This is actually quite a tricky thing to do. Texturing in OBJ files maps > part of an image onto a surface triangle. There are no vertices associated > with the colours. PLY files work differently and each vertex has its own > colour. To recreate the textures in a PLY file you would need to create a > new vertex for each pixel in the OBJ file. That would make the file very > much larger and involve a moderate amount of geometric calculation. I don't > know of any software package that will do this for you (it isn't > particularly hard but I doubt there is much demand). However there are > plenty of software packages that will read textured OBJ files and let you > make measurements of points on faces (Blender can do this for example). The > problem is that the process isn't streamlined to make taking large numbers > of measurements particularly quick and easy. Also I would worry that you > are losing quite a lot of accuracy in this approach because the 3D position > will just be linearly interpolated from the vertices and this may give you > a false sense of the precision of the technique. > > Cheers > Bill > -- > Bill Sellers, Tel: 01612751719, Mobile: 07857655786, > http://www.animalsimulation.org > University of Manchester, D1239 Michael Smith Building, Manchester, M13 > 9PT. > > On 01/09/2016 12:31, M. Viviana Toro Ibacache wrote: > >> Deal Morphometricians, >> >> I have .obj files with textures from three .jpg photos. I can load and >> see the textures very nicely in Meshlab, but I need the textures to be >> transformed into a coloured .ply file to do geometric morphometric analyses >> (the landmarks are represented in the textures). So far it has not worked >> doing it from Meshlab, so my questions are: >> >> - I know I can place landmarks in Meshlab using the .obj file, but when I >> do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is >> there a limit to files size in Meshlab? I would rather not to downsample >> the mesh to not lose anatomical details. >> >> - When using the Transfer Texture to Vertex Color function, the texture >> gets messed. It seems from web forums that Mshlab takes only one of the (in >> this case) three .jpg files to do the colouring of the .ply mesh. Does >> anybody know how to fix this? Another freeware software? >> >> - Is there any landmark acquisition software that loads .obj files with >> textures? So far, I have not been able to do it in Landmark Editor, Evan >> toolbox, Avizo, Morpho nor Geomorph. >> >> Any help is greatly appreciated. >> >> Best (y saludos), >> Viviana >> >> >> >> -- >> * >> Viviana Toro-Ibacache DDS MSc PhD* >> Profesora Asistente /(Assistant Professor)/ >> Centro de Análisis Cuantitativo en Antropología Dental (CA2) >> Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas >> Facultad de Odontología Universidad de Chile >> >> Dirección: Sergio Livingstone Pohlhammer 943 >> /(address)/ Independencia, Región Metropolitana >> Chile >> Email:mtoroibaca...@odontologia.uchile.cl > mtoroibaca...@odontologia.uchile.cl> >> Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ < >> http://www.researchgate.net/profile/Viviana_Toro_Ibacache/> >> www.cienciaymemoria.cl/staff.html < >> http://www.cienciaymemoria.cl/staff.html> >> >> -- >> MORPHMET may be accessed via its webpage at http://www.morphometrics.org >> --- >> You received this message because you are subscribed to the Google Groups >> "MORPHMET" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to morphmet+unsubscr...@morphometrics.org > morphmet+unsubscr...@morphometrics.org>. >> > > -- > MORPHMET may be accessed via its webpage at http://www.morphometrics.org > --- You received this message because you are subscribed to the Google > Groups "MORPHMET" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to morphmet+unsubscr...@morphometrics.org. > > -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas Facultad de Odontología Universidad de Chil
[MORPHMET] How to export .obj with textures as .ply with colours for morphometric analyses?
Deal Morphometricians, I have .obj files with textures from three .jpg photos. I can load and see the textures very nicely in Meshlab, but I need the textures to be transformed into a coloured .ply file to do geometric morphometric analyses (the landmarks are represented in the textures). So far it has not worked doing it from Meshlab, so my questions are: - I know I can place landmarks in Meshlab using the .obj file, but when I do it, the software crashes. any thoughts? the .obj file is 16 Mb big. Is there a limit to files size in Meshlab? I would rather not to downsample the mesh to not lose anatomical details. - When using the Transfer Texture to Vertex Color function, the texture gets messed. It seems from web forums that Mshlab takes only one of the (in this case) three .jpg files to do the colouring of the .ply mesh. Does anybody know how to fix this? Another freeware software? - Is there any landmark acquisition software that loads .obj files with textures? So far, I have not been able to do it in Landmark Editor, Evan toolbox, Avizo, Morpho nor Geomorph. Any help is greatly appreciated. Best (y saludos), Viviana -- *Viviana Toro-Ibacache DDS MSc PhD* Profesora Asistente *(Assistant Professor)* Centro de Análisis Cuantitativo en Antropología Dental (CA2) Unidad de Anatomía, Instituto de Investigación en Ciencias Odontológicas Facultad de Odontología Universidad de Chile Dirección: Sergio Livingstone Pohlhammer 943 *(address)* Independencia, Región Metropolitana Chile Email:mtoroibaca...@odontologia.uchile.cl Web: www.researchgate.net/profile/Viviana_Toro_Ibacache/ www.cienciaymemoria.cl/staff.html -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.